Merge tag 'v5.2-rc4' into mauro

We need to pick up post-rc1 changes to various document files so they don't
get lost in Mauro's massive RST conversion push.

67 files changed, 282 insertions, 761 deletions

diff --git a/drivers/isdn/Kconfig b/drivers/isdn/Kconfig
index ef661acdda17..1ca4d70d198a 100644
--- a/drivers/isdn/Kconfig
+++ b/drivers/isdn/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # ISDN device configuration
 #
diff --git a/drivers/isdn/capi/Kconfig b/drivers/isdn/capi/Kconfig
index 7641b3096ea6..abaadce376c5 100644
--- a/drivers/isdn/capi/Kconfig
+++ b/drivers/isdn/capi/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 config CAPI_TRACE
 	bool "CAPI trace support"
 	default y
diff --git a/drivers/isdn/divert/Makefile b/drivers/isdn/divert/Makefile
index dd4a202e0bc2..07684fe53537 100644
--- a/drivers/isdn/divert/Makefile
+++ b/drivers/isdn/divert/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 # Makefile for the dss1_divert ISDN module
 
 # Each configuration option enables a list of files.
diff --git a/drivers/isdn/gigaset/Kconfig b/drivers/isdn/gigaset/Kconfig
index 83f62b8d82b5..fe41e9cfb672 100644
--- a/drivers/isdn/gigaset/Kconfig
+++ b/drivers/isdn/gigaset/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 menuconfig ISDN_DRV_GIGASET
 	tristate "Siemens Gigaset support"
 	depends on TTY
diff --git a/drivers/isdn/gigaset/asyncdata.c b/drivers/isdn/gigaset/asyncdata.c
index c0cbee06bc21..a34b3c9d8a71 100644
--- a/drivers/isdn/gigaset/asyncdata.c
+++ b/drivers/isdn/gigaset/asyncdata.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Common data handling layer for ser_gigaset and usb_gigaset
  *
@@ -6,10 +7,6 @@
  *                       Stefan Eilers.
  *
  * =====================================================================
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation; either version 2 of
- *	the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/bas-gigaset.c b/drivers/isdn/gigaset/bas-gigaset.c
index 149b1aca52a2..c334525a5f63 100644
--- a/drivers/isdn/gigaset/bas-gigaset.c
+++ b/drivers/isdn/gigaset/bas-gigaset.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * USB driver for Gigaset 307x base via direct USB connection.
  *
@@ -6,10 +7,6 @@
  *                       Stefan Eilers.
  *
  * =====================================================================
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation; either version 2 of
- *	the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c
index 9cb2ab57fa4a..83d7dd48c61d 100644
--- a/drivers/isdn/gigaset/capi.c
+++ b/drivers/isdn/gigaset/capi.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Kernel CAPI interface for the Gigaset driver
  *
  * Copyright (c) 2009 by Tilman Schmidt <tilman@imap.cc>.
  *
  * =====================================================================
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation; either version 2 of
- *	the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c
index 76b5407b5277..3bb8092858ab 100644
--- a/drivers/isdn/gigaset/common.c
+++ b/drivers/isdn/gigaset/common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Stuff used by all variants of the driver
  *
@@ -6,10 +7,6 @@
  *                       Tilman Schmidt <tilman@imap.cc>.
  *
  * =====================================================================
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation; either version 2 of
- *	the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/dummyll.c b/drivers/isdn/gigaset/dummyll.c
index 570c2d53b84e..4b9637e5da6e 100644
--- a/drivers/isdn/gigaset/dummyll.c
+++ b/drivers/isdn/gigaset/dummyll.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Dummy LL interface for the Gigaset driver
  *
  * Copyright (c) 2009 by Tilman Schmidt <tilman@imap.cc>.
  *
  * =====================================================================
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation; either version 2 of
- *	the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/ev-layer.c b/drivers/isdn/gigaset/ev-layer.c
index 182826e9d07c..f8bb1869c600 100644
--- a/drivers/isdn/gigaset/ev-layer.c
+++ b/drivers/isdn/gigaset/ev-layer.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Stuff used by all variants of the driver
  *
@@ -6,10 +7,6 @@
  *                       Tilman Schmidt <tilman@imap.cc>.
  *
  * =====================================================================
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation; either version 2 of
- *	the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/gigaset.h b/drivers/isdn/gigaset/gigaset.h
index 166537e2dfca..0ecc2b5ea553 100644
--- a/drivers/isdn/gigaset/gigaset.h
+++ b/drivers/isdn/gigaset/gigaset.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  * Siemens Gigaset 307x driver
  * Common header file for all connection variants
@@ -6,10 +7,6 @@
  *        and Hansjoerg Lipp <hjlipp@web.de>
  *
  * =====================================================================
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation; either version 2 of
- *	the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/i4l.c b/drivers/isdn/gigaset/i4l.c
index b5b389e95edd..335b8ce2bb06 100644
--- a/drivers/isdn/gigaset/i4l.c
+++ b/drivers/isdn/gigaset/i4l.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Stuff used by all variants of the driver
  *
@@ -6,10 +7,6 @@
  *                       Tilman Schmidt <tilman@imap.cc>.
  *
  * =====================================================================
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation; either version 2 of
- *	the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
index d9a578ac32cd..17fa615a8c68 100644
--- a/drivers/isdn/gigaset/interface.c
+++ b/drivers/isdn/gigaset/interface.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * interface to user space for the gigaset driver
  *
  * Copyright (c) 2004 by Hansjoerg Lipp <hjlipp@web.de>
  *
  * =====================================================================
- *    This program is free software; you can redistribute it and/or
- *    modify it under the terms of the GNU General Public License as
- *    published by the Free Software Foundation; either version 2 of
- *    the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/isocdata.c b/drivers/isdn/gigaset/isocdata.c
index f9264ba0fe77..3ecf6e33ed15 100644
--- a/drivers/isdn/gigaset/isocdata.c
+++ b/drivers/isdn/gigaset/isocdata.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Common data handling layer for bas_gigaset
  *
@@ -5,10 +6,6 @@
  *                       Hansjoerg Lipp <hjlipp@web.de>.
  *
  * =====================================================================
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation; either version 2 of
- *	the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/proc.c b/drivers/isdn/gigaset/proc.c
index e3f9d0f089fa..8914439a4237 100644
--- a/drivers/isdn/gigaset/proc.c
+++ b/drivers/isdn/gigaset/proc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Stuff used by all variants of the driver
  *
@@ -6,10 +7,6 @@
  *                       Tilman Schmidt <tilman@imap.cc>.
  *
  * =====================================================================
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation; either version 2 of
- *	the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c
index e1de8b1a1001..5587e9e7fc73 100644
--- a/drivers/isdn/gigaset/ser-gigaset.c
+++ b/drivers/isdn/gigaset/ser-gigaset.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /* This is the serial hardware link layer (HLL) for the Gigaset 307x isdn
  * DECT base (aka Sinus 45 isdn) using the RS232 DECT data module M101,
  * written as a line discipline.
  *
  * =====================================================================
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c
index eade36dafa34..1b9b43659bdf 100644
--- a/drivers/isdn/gigaset/usb-gigaset.c
+++ b/drivers/isdn/gigaset/usb-gigaset.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * USB driver for Gigaset 307x directly or using M105 Data.
  *
@@ -8,10 +9,6 @@
  * Greg Kroah-Hartman <greg@kroah.com>
  *
  * =====================================================================
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation; either version 2 of
- *	the License, or (at your option) any later version.
  * =====================================================================
  */
 
diff --git a/drivers/isdn/hardware/Kconfig b/drivers/isdn/hardware/Kconfig
index 95c403088cce..0d609b5fcf01 100644
--- a/drivers/isdn/hardware/Kconfig
+++ b/drivers/isdn/hardware/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # ISDN hardware drivers
 #
diff --git a/drivers/isdn/hardware/Makefile b/drivers/isdn/hardware/Makefile
index e503032b05a0..a43760a0a4f5 100644
--- a/drivers/isdn/hardware/Makefile
+++ b/drivers/isdn/hardware/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 # Makefile for the CAPI hardware drivers
 
 # Object files in subdirectories
diff --git a/drivers/isdn/hardware/avm/Kconfig b/drivers/isdn/hardware/avm/Kconfig
index b99b906ea9b1..81483db067bb 100644
--- a/drivers/isdn/hardware/avm/Kconfig
+++ b/drivers/isdn/hardware/avm/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # ISDN AVM drivers
 #
diff --git a/drivers/isdn/hardware/mISDN/Kconfig b/drivers/isdn/hardware/mISDN/Kconfig
index fda912b0833f..a7a34a85b970 100644
--- a/drivers/isdn/hardware/mISDN/Kconfig
+++ b/drivers/isdn/hardware/mISDN/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Hardware for mISDN
 #
diff --git a/drivers/isdn/hardware/mISDN/avmfritz.c b/drivers/isdn/hardware/mISDN/avmfritz.c
index 8eb28a83832e..81f2b183acc8 100644
--- a/drivers/isdn/hardware/mISDN/avmfritz.c
+++ b/drivers/isdn/hardware/mISDN/avmfritz.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * avm_fritz.c    low level stuff for AVM FRITZ!CARD PCI ISDN cards
  *                Thanks to AVM, Berlin for informations
@@ -5,20 +6,6 @@
  * Author       Karsten Keil <keil@isdn4linux.de>
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 #include <linux/interrupt.h>
 #include <linux/module.h>
diff --git a/drivers/isdn/hardware/mISDN/hfc_pci.h b/drivers/isdn/hardware/mISDN/hfc_pci.h
index 411cd10772e8..a0e4806c11fa 100644
--- a/drivers/isdn/hardware/mISDN/hfc_pci.h
+++ b/drivers/isdn/hardware/mISDN/hfc_pci.h
@@ -1,24 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  *  specific defines for CCD's HFC 2BDS0 PCI chips
  *
  * Author     Werner Cornelius (werner@isdn4linux.de)
  *
  * Copyright 1999  by Werner Cornelius (werner@isdn4linux.de)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 /*
diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c
index 0928fd1f0e0c..86669ec8b977 100644
--- a/drivers/isdn/hardware/mISDN/hfcmulti.c
+++ b/drivers/isdn/hardware/mISDN/hfcmulti.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * hfcmulti.c  low level driver for hfc-4s/hfc-8s/hfc-e1 based cards
  *
@@ -10,21 +11,6 @@
  * Copyright 2008  by Karsten Keil (kkeil@suse.de)
  * Copyright 2008  by Andreas Eversberg (jolly@eversberg.eu)
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
  * Thanks to Cologne Chip AG for this great controller!
  */
 
diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c
index 29c22d74afe0..4a069582fc6b 100644
--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  *
  * hfcpci.c     low level driver for CCD's hfc-pci based cards
@@ -9,20 +10,6 @@
  * Copyright 1999  by Werner Cornelius (werner@isdn-development.de)
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  * Module options:
  *
  * debug:
@@ -41,7 +28,6 @@
  *	If kernel uses a frequency of 1000 Hz, steps of 8 samples are possible.
  *	If the kernel uses 100 Hz, steps of 80 samples are possible.
  *	If the kernel uses 300 Hz, steps of about 26 samples are possible.
- *
  */
 
 #include <linux/interrupt.h>
diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.c b/drivers/isdn/hardware/mISDN/hfcsusb.c
index 26e3182bbca8..4c99739b937e 100644
--- a/drivers/isdn/hardware/mISDN/hfcsusb.c
+++ b/drivers/isdn/hardware/mISDN/hfcsusb.c
@@ -1,24 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /* hfcsusb.c
  * mISDN driver for Colognechip HFC-S USB chip
  *
  * Copyright 2001 by Peter Sprenger (sprenger@moving-bytes.de)
  * Copyright 2008 by Martin Bachem (info@bachem-it.com)
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
  * module params
  *   debug=<n>, default=0, with n=0xHHHHGGGG
  *      H - l1 driver flags described in hfcsusb.h
diff --git a/drivers/isdn/hardware/mISDN/iohelper.h b/drivers/isdn/hardware/mISDN/iohelper.h
index c3e7bb1daa24..b2b2bde8edba 100644
--- a/drivers/isdn/hardware/mISDN/iohelper.h
+++ b/drivers/isdn/hardware/mISDN/iohelper.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * iohelper.h
  *		helper for define functions to access ISDN hardware
@@ -7,20 +8,6 @@
  * Author       Karsten Keil <keil@isdn4linux.de>
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 #ifndef _IOHELPER_H
diff --git a/drivers/isdn/hardware/mISDN/ipac.h b/drivers/isdn/hardware/mISDN/ipac.h
index 720ee72aab6a..2f0c4978a7a5 100644
--- a/drivers/isdn/hardware/mISDN/ipac.h
+++ b/drivers/isdn/hardware/mISDN/ipac.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *
  * ipac.h	Defines for the Infineon (former Siemens) ISDN
@@ -6,20 +7,6 @@
  * Author       Karsten Keil <keil@isdn4linux.de>
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 #include "iohelper.h"
diff --git a/drivers/isdn/hardware/mISDN/isar.h b/drivers/isdn/hardware/mISDN/isar.h
index cadfc49c9207..36a9fa564b17 100644
--- a/drivers/isdn/hardware/mISDN/isar.h
+++ b/drivers/isdn/hardware/mISDN/isar.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *
  * isar.h   ISAR (Siemens PSB 7110) specific defines
@@ -5,20 +6,6 @@
  * Author Karsten Keil (keil@isdn4linux.de)
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 #include "iohelper.h"
diff --git a/drivers/isdn/hardware/mISDN/mISDNinfineon.c b/drivers/isdn/hardware/mISDN/mISDNinfineon.c
index 0fe6ddcb3fdc..f4cb29766888 100644
--- a/drivers/isdn/hardware/mISDN/mISDNinfineon.c
+++ b/drivers/isdn/hardware/mISDN/mISDNinfineon.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mISDNinfineon.c
  *		Support for cards based on following Infineon ISDN chipsets
@@ -17,25 +18,9 @@
  *		- Berkom Scitel BRIX Quadro
  *		- Dr.Neuhaus (Sagem) Niccy
  *
- *
- *
  * Author       Karsten Keil <keil@isdn4linux.de>
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 #include <linux/interrupt.h>
diff --git a/drivers/isdn/hardware/mISDN/mISDNipac.c b/drivers/isdn/hardware/mISDN/mISDNipac.c
index 4d78f870435e..f915399d75ca 100644
--- a/drivers/isdn/hardware/mISDN/mISDNipac.c
+++ b/drivers/isdn/hardware/mISDN/mISDNipac.c
@@ -1,23 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * isac.c   ISAC specific routines
  *
  * Author       Karsten Keil <keil@isdn4linux.de>
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 #include <linux/irqreturn.h>
diff --git a/drivers/isdn/hardware/mISDN/mISDNisar.c b/drivers/isdn/hardware/mISDN/mISDNisar.c
index 386731ec2489..fd5c52f37802 100644
--- a/drivers/isdn/hardware/mISDN/mISDNisar.c
+++ b/drivers/isdn/hardware/mISDN/mISDNisar.c
@@ -1,23 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mISDNisar.c   ISAR (Siemens PSB 7110) specific functions
  *
  * Author Karsten Keil (keil@isdn4linux.de)
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 /* define this to enable static debug messages, if you kernel supports
diff --git a/drivers/isdn/hardware/mISDN/netjet.c b/drivers/isdn/hardware/mISDN/netjet.c
index 2b317cb63d06..5c9e38ba52ea 100644
--- a/drivers/isdn/hardware/mISDN/netjet.c
+++ b/drivers/isdn/hardware/mISDN/netjet.c
@@ -1,23 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * NETJet mISDN driver
  *
  * Author       Karsten Keil <keil@isdn4linux.de>
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 #include <linux/interrupt.h>
diff --git a/drivers/isdn/hardware/mISDN/netjet.h b/drivers/isdn/hardware/mISDN/netjet.h
index ddd41ef1a70e..b23ad9f6d4d0 100644
--- a/drivers/isdn/hardware/mISDN/netjet.h
+++ b/drivers/isdn/hardware/mISDN/netjet.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * NETjet common header file
  *
@@ -6,20 +7,6 @@
  *              Traverse Technologies P/L www.traverse.com.au
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 #define NJ_CTRL			0x00
diff --git a/drivers/isdn/hardware/mISDN/speedfax.c b/drivers/isdn/hardware/mISDN/speedfax.c
index 1f1446ed8d5f..b530c78eca8e 100644
--- a/drivers/isdn/hardware/mISDN/speedfax.c
+++ b/drivers/isdn/hardware/mISDN/speedfax.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * speedfax.c	low level stuff for Sedlbauer Speedfax+ cards
  *		based on the ISAR DSP
@@ -6,20 +7,6 @@
  * Author       Karsten Keil <keil@isdn4linux.de>
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 #include <linux/interrupt.h>
diff --git a/drivers/isdn/hardware/mISDN/w6692.c b/drivers/isdn/hardware/mISDN/w6692.c
index 6f60aced11c5..2402608dc98d 100644
--- a/drivers/isdn/hardware/mISDN/w6692.c
+++ b/drivers/isdn/hardware/mISDN/w6692.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * w6692.c     mISDN driver for Winbond w6692 based cards
  *
@@ -5,20 +6,6 @@
  *             based on the w6692 I4L driver from Petr Novak <petr.novak@i.cz>
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 #include <linux/interrupt.h>
diff --git a/drivers/isdn/hardware/mISDN/w6692.h b/drivers/isdn/hardware/mISDN/w6692.h
index f95697757fd0..45e1dc5d6c2d 100644
--- a/drivers/isdn/hardware/mISDN/w6692.h
+++ b/drivers/isdn/hardware/mISDN/w6692.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Winbond W6692 specific defines
  *
@@ -5,20 +6,6 @@
  *		based on the w6692 I4L driver from Petr Novak <petr.novak@i.cz>
  *
  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 /* Specifications of W6692 registers */
diff --git a/drivers/isdn/hisax/Kconfig b/drivers/isdn/hisax/Kconfig
index 38cfc8baae19..43d98ccf5ff6 100644
--- a/drivers/isdn/hisax/Kconfig
+++ b/drivers/isdn/hisax/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 
 menu "Passive cards"
 
diff --git a/drivers/isdn/hisax/hfc_usb.c b/drivers/isdn/hisax/hfc_usb.c
index 1d4cd01d4685..b6e58c11c288 100644
--- a/drivers/isdn/hisax/hfc_usb.c
+++ b/drivers/isdn/hisax/hfc_usb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * hfc_usb.c
  *
@@ -11,22 +12,7 @@
  *           based on the first hfc_usb driver of
  *           Werner Cornelius (werner@isdn-development.de)
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  * See Version Histroy at the bottom of this file
- *
  */
 
 #include <linux/types.h>
diff --git a/drivers/isdn/hisax/teles_cs.c b/drivers/isdn/hisax/teles_cs.c
index b8dd14958757..bcc37e955622 100644
--- a/drivers/isdn/hisax/teles_cs.c
+++ b/drivers/isdn/hisax/teles_cs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */
 /*======================================================================
 
diff --git a/drivers/isdn/hysdn/Kconfig b/drivers/isdn/hysdn/Kconfig
index e86bc6583d71..1971ef850c9a 100644
--- a/drivers/isdn/hysdn/Kconfig
+++ b/drivers/isdn/hysdn/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 config HYSDN
 	tristate "Hypercope HYSDN cards (Champ, Ergo, Metro) support (module only)"
 	depends on m && PROC_FS && PCI
diff --git a/drivers/isdn/hysdn/Makefile b/drivers/isdn/hysdn/Makefile
index da63b636267d..e01f17f22ebb 100644
--- a/drivers/isdn/hysdn/Makefile
+++ b/drivers/isdn/hysdn/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 # Makefile for the hysdn ISDN device driver
 
 # Each configuration option enables a list of files.
diff --git a/drivers/isdn/i4l/Kconfig b/drivers/isdn/i4l/Kconfig
index 68e54d9f2f53..caa1b52f06f7 100644
--- a/drivers/isdn/i4l/Kconfig
+++ b/drivers/isdn/i4l/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Old ISDN4Linux config
 #
diff --git a/drivers/isdn/i4l/isdnhdlc.c b/drivers/isdn/i4l/isdnhdlc.c
index 027d1c590679..382a6b24e6a3 100644
--- a/drivers/isdn/i4l/isdnhdlc.c
+++ b/drivers/isdn/i4l/isdnhdlc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * isdnhdlc.c  --  General purpose ISDN HDLC decoder.
  *
@@ -6,20 +7,6 @@
  *	2002	Wolfgang Mües		<wolfgang@iksw-muees.de>
  *	2001	Frode Isaksen		<fisaksen@bewan.com>
  *      2001	Kai Germaschewski	<kai.germaschewski@gmx.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 #include <linux/module.h>
diff --git a/drivers/isdn/isdnloop/Makefile b/drivers/isdn/isdnloop/Makefile
index 317cd3c5b8ee..5ff4c0e09768 100644
--- a/drivers/isdn/isdnloop/Makefile
+++ b/drivers/isdn/isdnloop/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 # Makefile for the isdnloop ISDN device driver
 
 # Each configuration option enables a list of files.
diff --git a/drivers/isdn/mISDN/Kconfig b/drivers/isdn/mISDN/Kconfig
index c0730d5c734d..26cf0ac9c4ad 100644
--- a/drivers/isdn/mISDN/Kconfig
+++ b/drivers/isdn/mISDN/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # modularer ISDN driver
 #
diff --git a/drivers/isdn/mISDN/clock.c b/drivers/isdn/mISDN/clock.c
index f8f659f1ce1b..01d878168ef2 100644
--- a/drivers/isdn/mISDN/clock.c
+++ b/drivers/isdn/mISDN/clock.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright 2008  by Andreas Eversberg <andreas@eversberg.eu>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Quick API description:
  *
  * A clock source registers using mISDN_register_clock:
@@ -30,7 +22,6 @@
  *
  * To get current clock, call mISDN_clock_get. The signed short value
  * counts the number of samples since. Time since last clock event is added.
- *
  */
 
 #include <linux/slab.h>
diff --git a/drivers/isdn/mISDN/core.c b/drivers/isdn/mISDN/core.c
index faf505462a4f..55891e420446 100644
--- a/drivers/isdn/mISDN/core.c
+++ b/drivers/isdn/mISDN/core.c
@@ -1,15 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #include <linux/slab.h>
diff --git a/drivers/isdn/mISDN/core.h b/drivers/isdn/mISDN/core.h
index 52695bb81ee7..23b44d303327 100644
--- a/drivers/isdn/mISDN/core.h
+++ b/drivers/isdn/mISDN/core.h
@@ -1,15 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #ifndef mISDN_CORE_H
diff --git a/drivers/isdn/mISDN/dsp_biquad.h b/drivers/isdn/mISDN/dsp_biquad.h
index c0c933a5d197..f40d52a4c4ee 100644
--- a/drivers/isdn/mISDN/dsp_biquad.h
+++ b/drivers/isdn/mISDN/dsp_biquad.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  * SpanDSP - a series of DSP components for telephony
  *
@@ -9,21 +10,6 @@
  * Copyright (C) 2001 Steve Underwood
  *
  * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 struct biquad2_state {
diff --git a/drivers/isdn/mISDN/dsp_cmx.c b/drivers/isdn/mISDN/dsp_cmx.c
index d4b6f01a3f0e..6d2088fbaf69 100644
--- a/drivers/isdn/mISDN/dsp_cmx.c
+++ b/drivers/isdn/mISDN/dsp_cmx.c
@@ -1676,9 +1676,9 @@ dsp_cmx_send(void *arg)
 #ifdef CMX_CONF_DEBUG
 			if (conf->software && members > 1)
 #else
-				if (conf->software && members > 2)
+			if (conf->software && members > 2)
 #endif
-					mustmix = 1;
+				mustmix = 1;
 		}
 
 		/* transmission required */
@@ -1699,263 +1699,262 @@ dsp_cmx_send(void *arg)
 #ifdef CMX_CONF_DEBUG
 		if (conf->software && members > 1) {
 #else
-			if (conf->software && members > 2) {
+		if (conf->software && members > 2) {
 #endif
-				/* check for hdlc conf */
-				member = list_entry(conf->mlist.next,
-						    struct dsp_conf_member, list);
-				if (member->dsp->hdlc)
-					continue;
-				/* mix all data */
-				memset(mixbuffer, 0, length * sizeof(s32));
-				list_for_each_entry(member, &conf->mlist, list) {
-					dsp = member->dsp;
-					/* get range of data to mix */
-					c = mixbuffer;
-					q = dsp->rx_buff;
-					r = dsp->rx_R;
-					rr = (r + length) & CMX_BUFF_MASK;
-					/* add member's data */
-					while (r != rr) {
-						*c++ += dsp_audio_law_to_s32[q[r]];
-						r = (r + 1) & CMX_BUFF_MASK;
-					}
+			/* check for hdlc conf */
+			member = list_entry(conf->mlist.next,
+					    struct dsp_conf_member, list);
+			if (member->dsp->hdlc)
+				continue;
+			/* mix all data */
+			memset(mixbuffer, 0, length * sizeof(s32));
+			list_for_each_entry(member, &conf->mlist, list) {
+				dsp = member->dsp;
+				/* get range of data to mix */
+				c = mixbuffer;
+				q = dsp->rx_buff;
+				r = dsp->rx_R;
+				rr = (r + length) & CMX_BUFF_MASK;
+				/* add member's data */
+				while (r != rr) {
+					*c++ += dsp_audio_law_to_s32[q[r]];
+					r = (r + 1) & CMX_BUFF_MASK;
 				}
+			}
 
-				/* process each member */
-				list_for_each_entry(member, &conf->mlist, list) {
-					/* transmission */
-					dsp_cmx_send_member(member->dsp, length,
-							    mixbuffer, members);
-				}
+			/* process each member */
+			list_for_each_entry(member, &conf->mlist, list) {
+				/* transmission */
+				dsp_cmx_send_member(member->dsp, length,
+						    mixbuffer, members);
+			}
+		}
+	}
+
+	/* delete rx-data, increment buffers, change pointers */
+	list_for_each_entry(dsp, &dsp_ilist, list) {
+		if (dsp->hdlc)
+			continue;
+		p = dsp->rx_buff;
+		q = dsp->tx_buff;
+		r = dsp->rx_R;
+		/* move receive pointer when receiving */
+		if (!dsp->rx_is_off) {
+			rr = (r + length) & CMX_BUFF_MASK;
+			/* delete rx-data */
+			while (r != rr) {
+				p[r] = dsp_silence;
+				r = (r + 1) & CMX_BUFF_MASK;
 			}
+			/* increment rx-buffer pointer */
+			dsp->rx_R = r; /* write incremented read pointer */
 		}
 
-		/* delete rx-data, increment buffers, change pointers */
-		list_for_each_entry(dsp, &dsp_ilist, list) {
-			if (dsp->hdlc)
-				continue;
-			p = dsp->rx_buff;
-			q = dsp->tx_buff;
-			r = dsp->rx_R;
-			/* move receive pointer when receiving */
-			if (!dsp->rx_is_off) {
-				rr = (r + length) & CMX_BUFF_MASK;
+		/* check current rx_delay */
+		delay = (dsp->rx_W-dsp->rx_R) & CMX_BUFF_MASK;
+		if (delay >= CMX_BUFF_HALF)
+			delay = 0; /* will be the delay before next write */
+		/* check for lower delay */
+		if (delay < dsp->rx_delay[0])
+			dsp->rx_delay[0] = delay;
+		/* check current tx_delay */
+		delay = (dsp->tx_W-dsp->tx_R) & CMX_BUFF_MASK;
+		if (delay >= CMX_BUFF_HALF)
+			delay = 0; /* will be the delay before next write */
+		/* check for lower delay */
+		if (delay < dsp->tx_delay[0])
+			dsp->tx_delay[0] = delay;
+		if (jittercheck) {
+			/* find the lowest of all rx_delays */
+			delay = dsp->rx_delay[0];
+			i = 1;
+			while (i < MAX_SECONDS_JITTER_CHECK) {
+				if (delay > dsp->rx_delay[i])
+					delay = dsp->rx_delay[i];
+				i++;
+			}
+			/*
+			 * remove rx_delay only if we have delay AND we
+			 * have not preset cmx_delay AND
+			 * the delay is greater dsp_poll
+			 */
+			if (delay > dsp_poll && !dsp->cmx_delay) {
+				if (dsp_debug & DEBUG_DSP_CLOCK)
+					printk(KERN_DEBUG
+					       "%s lowest rx_delay of %d bytes for"
+					       " dsp %s are now removed.\n",
+					       __func__, delay,
+					       dsp->name);
+				r = dsp->rx_R;
+				rr = (r + delay - (dsp_poll >> 1))
+					& CMX_BUFF_MASK;
 				/* delete rx-data */
 				while (r != rr) {
 					p[r] = dsp_silence;
 					r = (r + 1) & CMX_BUFF_MASK;
 				}
 				/* increment rx-buffer pointer */
-				dsp->rx_R = r; /* write incremented read pointer */
+				dsp->rx_R = r;
+				/* write incremented read pointer */
 			}
-
-			/* check current rx_delay */
-			delay = (dsp->rx_W-dsp->rx_R) & CMX_BUFF_MASK;
-			if (delay >= CMX_BUFF_HALF)
-				delay = 0; /* will be the delay before next write */
-			/* check for lower delay */
-			if (delay < dsp->rx_delay[0])
-				dsp->rx_delay[0] = delay;
-			/* check current tx_delay */
-			delay = (dsp->tx_W-dsp->tx_R) & CMX_BUFF_MASK;
-			if (delay >= CMX_BUFF_HALF)
-				delay = 0; /* will be the delay before next write */
-			/* check for lower delay */
-			if (delay < dsp->tx_delay[0])
-				dsp->tx_delay[0] = delay;
-			if (jittercheck) {
-				/* find the lowest of all rx_delays */
-				delay = dsp->rx_delay[0];
-				i = 1;
-				while (i < MAX_SECONDS_JITTER_CHECK) {
-					if (delay > dsp->rx_delay[i])
-						delay = dsp->rx_delay[i];
-					i++;
-				}
-				/*
-				 * remove rx_delay only if we have delay AND we
-				 * have not preset cmx_delay AND
-				 * the delay is greater dsp_poll
-				 */
-				if (delay > dsp_poll && !dsp->cmx_delay) {
-					if (dsp_debug & DEBUG_DSP_CLOCK)
-						printk(KERN_DEBUG
-						       "%s lowest rx_delay of %d bytes for"
-						       " dsp %s are now removed.\n",
-						       __func__, delay,
-						       dsp->name);
-					r = dsp->rx_R;
-					rr = (r + delay - (dsp_poll >> 1))
-						& CMX_BUFF_MASK;
-					/* delete rx-data */
-					while (r != rr) {
-						p[r] = dsp_silence;
-						r = (r + 1) & CMX_BUFF_MASK;
-					}
-					/* increment rx-buffer pointer */
-					dsp->rx_R = r;
-					/* write incremented read pointer */
-				}
-				/* find the lowest of all tx_delays */
-				delay = dsp->tx_delay[0];
-				i = 1;
-				while (i < MAX_SECONDS_JITTER_CHECK) {
-					if (delay > dsp->tx_delay[i])
-						delay = dsp->tx_delay[i];
-					i++;
-				}
-				/*
-				 * remove delay only if we have delay AND we
-				 * have enabled tx_dejitter
-				 */
-				if (delay > dsp_poll && dsp->tx_dejitter) {
-					if (dsp_debug & DEBUG_DSP_CLOCK)
-						printk(KERN_DEBUG
-						       "%s lowest tx_delay of %d bytes for"
-						       " dsp %s are now removed.\n",
-						       __func__, delay,
-						       dsp->name);
-					r = dsp->tx_R;
-					rr = (r + delay - (dsp_poll >> 1))
-						& CMX_BUFF_MASK;
-					/* delete tx-data */
-					while (r != rr) {
-						q[r] = dsp_silence;
-						r = (r + 1) & CMX_BUFF_MASK;
-					}
-					/* increment rx-buffer pointer */
-					dsp->tx_R = r;
-					/* write incremented read pointer */
-				}
-				/* scroll up delays */
-				i = MAX_SECONDS_JITTER_CHECK - 1;
-				while (i) {
-					dsp->rx_delay[i] = dsp->rx_delay[i - 1];
-					dsp->tx_delay[i] = dsp->tx_delay[i - 1];
-					i--;
+			/* find the lowest of all tx_delays */
+			delay = dsp->tx_delay[0];
+			i = 1;
+			while (i < MAX_SECONDS_JITTER_CHECK) {
+				if (delay > dsp->tx_delay[i])
+					delay = dsp->tx_delay[i];
+				i++;
+			}
+			/*
+			 * remove delay only if we have delay AND we
+			 * have enabled tx_dejitter
+			 */
+			if (delay > dsp_poll && dsp->tx_dejitter) {
+				if (dsp_debug & DEBUG_DSP_CLOCK)
+					printk(KERN_DEBUG
+					       "%s lowest tx_delay of %d bytes for"
+					       " dsp %s are now removed.\n",
+					       __func__, delay,
+					       dsp->name);
+				r = dsp->tx_R;
+				rr = (r + delay - (dsp_poll >> 1))
+					& CMX_BUFF_MASK;
+				/* delete tx-data */
+				while (r != rr) {
+					q[r] = dsp_silence;
+					r = (r + 1) & CMX_BUFF_MASK;
 				}
-				dsp->tx_delay[0] = CMX_BUFF_HALF; /* (infinite) delay */
-				dsp->rx_delay[0] = CMX_BUFF_HALF; /* (infinite) delay */
+				/* increment rx-buffer pointer */
+				dsp->tx_R = r;
+				/* write incremented read pointer */
 			}
+			/* scroll up delays */
+			i = MAX_SECONDS_JITTER_CHECK - 1;
+			while (i) {
+				dsp->rx_delay[i] = dsp->rx_delay[i - 1];
+				dsp->tx_delay[i] = dsp->tx_delay[i - 1];
+				i--;
+			}
+			dsp->tx_delay[0] = CMX_BUFF_HALF; /* (infinite) delay */
+			dsp->rx_delay[0] = CMX_BUFF_HALF; /* (infinite) delay */
 		}
+	}
 
-		/* if next event would be in the past ... */
-		if ((s32)(dsp_spl_jiffies + dsp_tics-jiffies) <= 0)
-			dsp_spl_jiffies = jiffies + 1;
-		else
-			dsp_spl_jiffies += dsp_tics;
+	/* if next event would be in the past ... */
+	if ((s32)(dsp_spl_jiffies + dsp_tics-jiffies) <= 0)
+		dsp_spl_jiffies = jiffies + 1;
+	else
+		dsp_spl_jiffies += dsp_tics;
 
-		dsp_spl_tl.expires = dsp_spl_jiffies;
-		add_timer(&dsp_spl_tl);
+	dsp_spl_tl.expires = dsp_spl_jiffies;
+	add_timer(&dsp_spl_tl);
 
-		/* unlock */
-		spin_unlock_irqrestore(&dsp_lock, flags);
-	}
+	/* unlock */
+	spin_unlock_irqrestore(&dsp_lock, flags);
+}
 
 /*
  * audio data is transmitted from upper layer to the dsp
  */
-	void
-		dsp_cmx_transmit(struct dsp *dsp, struct sk_buff *skb)
-	{
-		u_int w, ww;
-		u8 *d, *p;
-		int space; /* todo: , l = skb->len; */
+void
+dsp_cmx_transmit(struct dsp *dsp, struct sk_buff *skb)
+{
+	u_int w, ww;
+	u8 *d, *p;
+	int space; /* todo: , l = skb->len; */
 #ifdef CMX_TX_DEBUG
-		char debugbuf[256] = "";
+	char debugbuf[256] = "";
 #endif
 
-		/* check if there is enough space, and then copy */
-		w = dsp->tx_W;
-		ww = dsp->tx_R;
-		p = dsp->tx_buff;
-		d = skb->data;
-		space = (ww - w - 1) & CMX_BUFF_MASK;
-		/* write-pointer should not overrun nor reach read pointer */
-		if (space < skb->len) {
-			/* write to the space we have left */
-			ww = (ww - 1) & CMX_BUFF_MASK; /* end one byte prior tx_R */
-			if (dsp_debug & DEBUG_DSP_CLOCK)
-				printk(KERN_DEBUG "%s: TX overflow space=%d skb->len="
-				       "%d, w=0x%04x, ww=0x%04x\n", __func__, space,
-				       skb->len, w, ww);
-		} else
-			/* write until all byte are copied */
-			ww = (w + skb->len) & CMX_BUFF_MASK;
-		dsp->tx_W = ww;
-
+	/* check if there is enough space, and then copy */
+	w = dsp->tx_W;
+	ww = dsp->tx_R;
+	p = dsp->tx_buff;
+	d = skb->data;
+	space = (ww - w - 1) & CMX_BUFF_MASK;
+	/* write-pointer should not overrun nor reach read pointer */
+	if (space < skb->len) {
+		/* write to the space we have left */
+		ww = (ww - 1) & CMX_BUFF_MASK; /* end one byte prior tx_R */
+		if (dsp_debug & DEBUG_DSP_CLOCK)
+			printk(KERN_DEBUG "%s: TX overflow space=%d skb->len="
+			       "%d, w=0x%04x, ww=0x%04x\n", __func__, space,
+			       skb->len, w, ww);
+	} else
+		/* write until all byte are copied */
+		ww = (w + skb->len) & CMX_BUFF_MASK;
+	dsp->tx_W = ww;
 		/* show current buffer */
 #ifdef CMX_DEBUG
-		printk(KERN_DEBUG
-		       "cmx_transmit(dsp=%lx) %d bytes to 0x%x-0x%x. %s\n",
-		       (u_long)dsp, (ww - w) & CMX_BUFF_MASK, w, ww, dsp->name);
+	printk(KERN_DEBUG
+	       "cmx_transmit(dsp=%lx) %d bytes to 0x%x-0x%x. %s\n",
+	       (u_long)dsp, (ww - w) & CMX_BUFF_MASK, w, ww, dsp->name);
 #endif
 
-		/* copy transmit data to tx-buffer */
+	/* copy transmit data to tx-buffer */
 #ifdef CMX_TX_DEBUG
-		sprintf(debugbuf, "TX getting (%04x-%04x)%p: ", w, ww, p);
+	sprintf(debugbuf, "TX getting (%04x-%04x)%p: ", w, ww, p);
 #endif
-		while (w != ww) {
+	while (w != ww) {
 #ifdef CMX_TX_DEBUG
-			if (strlen(debugbuf) < 48)
-				sprintf(debugbuf + strlen(debugbuf), " %02x", *d);
+		if (strlen(debugbuf) < 48)
+			sprintf(debugbuf + strlen(debugbuf), " %02x", *d);
 #endif
-			p[w] = *d++;
-			w = (w + 1) & CMX_BUFF_MASK;
-		}
+		p[w] = *d++;
+		w = (w + 1) & CMX_BUFF_MASK;
+	}
 #ifdef CMX_TX_DEBUG
-		printk(KERN_DEBUG "%s\n", debugbuf);
+	printk(KERN_DEBUG "%s\n", debugbuf);
 #endif
 
-	}
+}
 
 /*
  * hdlc data is received from card and sent to all members.
  */
-	void
-		dsp_cmx_hdlc(struct dsp *dsp, struct sk_buff *skb)
-	{
-		struct sk_buff *nskb = NULL;
-		struct dsp_conf_member *member;
-		struct mISDNhead *hh;
-
-		/* not if not active */
-		if (!dsp->b_active)
-			return;
+void
+dsp_cmx_hdlc(struct dsp *dsp, struct sk_buff *skb)
+{
+	struct sk_buff *nskb = NULL;
+	struct dsp_conf_member *member;
+	struct mISDNhead *hh;
 
-		/* check if we have sompen */
-		if (skb->len < 1)
-			return;
+	/* not if not active */
+	if (!dsp->b_active)
+		return;
 
-		/* no conf */
-		if (!dsp->conf) {
-			/* in case of software echo */
-			if (dsp->echo.software) {
-				nskb = skb_clone(skb, GFP_ATOMIC);
-				if (nskb) {
-					hh = mISDN_HEAD_P(nskb);
-					hh->prim = PH_DATA_REQ;
-					hh->id = 0;
-					skb_queue_tail(&dsp->sendq, nskb);
-					schedule_work(&dsp->workq);
-				}
+	/* check if we have sompen */
+	if (skb->len < 1)
+		return;
+
+	/* no conf */
+	if (!dsp->conf) {
+		/* in case of software echo */
+		if (dsp->echo.software) {
+			nskb = skb_clone(skb, GFP_ATOMIC);
+			if (nskb) {
+				hh = mISDN_HEAD_P(nskb);
+				hh->prim = PH_DATA_REQ;
+				hh->id = 0;
+				skb_queue_tail(&dsp->sendq, nskb);
+				schedule_work(&dsp->workq);
 			}
-			return;
 		}
-		/* in case of hardware conference */
-		if (dsp->conf->hardware)
-			return;
-		list_for_each_entry(member, &dsp->conf->mlist, list) {
-			if (dsp->echo.software || member->dsp != dsp) {
-				nskb = skb_clone(skb, GFP_ATOMIC);
-				if (nskb) {
-					hh = mISDN_HEAD_P(nskb);
-					hh->prim = PH_DATA_REQ;
-					hh->id = 0;
-					skb_queue_tail(&member->dsp->sendq, nskb);
-					schedule_work(&member->dsp->workq);
-				}
+		return;
+	}
+	/* in case of hardware conference */
+	if (dsp->conf->hardware)
+		return;
+	list_for_each_entry(member, &dsp->conf->mlist, list) {
+		if (dsp->echo.software || member->dsp != dsp) {
+			nskb = skb_clone(skb, GFP_ATOMIC);
+			if (nskb) {
+				hh = mISDN_HEAD_P(nskb);
+				hh->prim = PH_DATA_REQ;
+				hh->id = 0;
+				skb_queue_tail(&member->dsp->sendq, nskb);
+				schedule_work(&member->dsp->workq);
 			}
 		}
 	}
+}
diff --git a/drivers/isdn/mISDN/dsp_ecdis.h b/drivers/isdn/mISDN/dsp_ecdis.h
index fed99ac7f6a4..4bcdf321875d 100644
--- a/drivers/isdn/mISDN/dsp_ecdis.h
+++ b/drivers/isdn/mISDN/dsp_ecdis.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  * SpanDSP - a series of DSP components for telephony
  *
@@ -10,21 +11,6 @@
  * Copyright (C) 2001 Steve Underwood
  *
  * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 #include "dsp_biquad.h"
diff --git a/drivers/isdn/mISDN/dsp_hwec.c b/drivers/isdn/mISDN/dsp_hwec.c
index 5336bbdbfdc5..0b3f29195330 100644
--- a/drivers/isdn/mISDN/dsp_hwec.c
+++ b/drivers/isdn/mISDN/dsp_hwec.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * dsp_hwec.c:
  * builtin mISDN dsp pipeline element for enabling the hw echocanceller
@@ -5,24 +6,6 @@
  * Copyright (C) 2007, Nadi Sarrar
  *
  * Nadi Sarrar <nadi@beronet.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- *
- * The full GNU General Public License is included in this distribution in the
- * file called LICENSE.
- *
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/isdn/mISDN/dsp_pipeline.c b/drivers/isdn/mISDN/dsp_pipeline.c
index e72b4e73cd61..40588692cec7 100644
--- a/drivers/isdn/mISDN/dsp_pipeline.c
+++ b/drivers/isdn/mISDN/dsp_pipeline.c
@@ -1,27 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * dsp_pipeline.c: pipelined audio processing
  *
  * Copyright (C) 2007, Nadi Sarrar
  *
  * Nadi Sarrar <nadi@beronet.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- *
- * The full GNU General Public License is included in this distribution in the
- * file called LICENSE.
- *
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/isdn/mISDN/fsm.c b/drivers/isdn/mISDN/fsm.c
index 9a8d08d677a4..7c5c2ca6c6d8 100644
--- a/drivers/isdn/mISDN/fsm.c
+++ b/drivers/isdn/mISDN/fsm.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * finite state machine implementation
  *
@@ -6,16 +7,6 @@
  * Thanks to    Jan den Ouden
  *              Fritz Elfert
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/isdn/mISDN/fsm.h b/drivers/isdn/mISDN/fsm.h
index e1def8490221..211554b997f8 100644
--- a/drivers/isdn/mISDN/fsm.h
+++ b/drivers/isdn/mISDN/fsm.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *
  * Author       Karsten Keil <kkeil@novell.com>
@@ -5,16 +6,6 @@
  * Thanks to    Jan den Ouden
  *              Fritz Elfert
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #ifndef _MISDN_FSM_H
diff --git a/drivers/isdn/mISDN/hwchannel.c b/drivers/isdn/mISDN/hwchannel.c
index 84b4b0f7eb99..f378173bcf6f 100644
--- a/drivers/isdn/mISDN/hwchannel.c
+++ b/drivers/isdn/mISDN/hwchannel.c
@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *
  * Author	Karsten Keil <kkeil@novell.com>
  *
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #include <linux/gfp.h>
diff --git a/drivers/isdn/mISDN/l1oip_codec.c b/drivers/isdn/mISDN/l1oip_codec.c
index 9b033be11a5f..1059234fbc67 100644
--- a/drivers/isdn/mISDN/l1oip_codec.c
+++ b/drivers/isdn/mISDN/l1oip_codec.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
 
  * l1oip_codec.c  generic codec using lookup table
@@ -9,19 +10,6 @@
  *
  * Author	Andreas Eversberg (jolly@eversberg.eu)
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
  */
 
diff --git a/drivers/isdn/mISDN/l1oip_core.c b/drivers/isdn/mISDN/l1oip_core.c
index 072bb5e36c18..447f241467bd 100644
--- a/drivers/isdn/mISDN/l1oip_core.c
+++ b/drivers/isdn/mISDN/l1oip_core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
 
  * l1oip.c  low level driver for tunneling layer 1 over IP
@@ -5,21 +6,6 @@
  * NOTE: It is not compatible with TDMoIP nor "ISDN over IP".
  *
  * Author	Andreas Eversberg (jolly@eversberg.eu)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
  */
 
 /* module parameters:
diff --git a/drivers/isdn/mISDN/layer1.c b/drivers/isdn/mISDN/layer1.c
index 3192b0eb3944..98a3bc6c1700 100644
--- a/drivers/isdn/mISDN/layer1.c
+++ b/drivers/isdn/mISDN/layer1.c
@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *
  * Author	Karsten Keil <kkeil@novell.com>
  *
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 
diff --git a/drivers/isdn/mISDN/layer1.h b/drivers/isdn/mISDN/layer1.h
index d1d332ced05f..f03e86450daf 100644
--- a/drivers/isdn/mISDN/layer1.h
+++ b/drivers/isdn/mISDN/layer1.h
@@ -1,18 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *
  * Layer 1 defines
  *
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #define FLG_L1_ACTIVATING	1
diff --git a/drivers/isdn/mISDN/layer2.c b/drivers/isdn/mISDN/layer2.c
index 9ff0903a0e89..68a481516729 100644
--- a/drivers/isdn/mISDN/layer2.c
+++ b/drivers/isdn/mISDN/layer2.c
@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *
  * Author	Karsten Keil <kkeil@novell.com>
  *
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #include <linux/mISDNif.h>
diff --git a/drivers/isdn/mISDN/layer2.h b/drivers/isdn/mISDN/layer2.h
index fe68d94c1b73..c466fd94aa02 100644
--- a/drivers/isdn/mISDN/layer2.h
+++ b/drivers/isdn/mISDN/layer2.h
@@ -1,17 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Layer 2 defines
  *
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #include <linux/mISDNif.h>
diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c
index a14e35d40538..c6ba37df4b9d 100644
--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c
@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *
  * Author	Karsten Keil <kkeil@novell.com>
  *
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #include <linux/mISDNif.h>
@@ -393,7 +384,7 @@ data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 			memcpy(di.channelmap, dev->channelmap,
 			       sizeof(di.channelmap));
 			di.nrbchan = dev->nrbchan;
-			strcpy(di.name, dev_name(&dev->dev));
+			strscpy(di.name, dev_name(&dev->dev), sizeof(di.name));
 			if (copy_to_user((void __user *)arg, &di, sizeof(di)))
 				err = -EFAULT;
 		} else
@@ -676,7 +667,7 @@ base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 			memcpy(di.channelmap, dev->channelmap,
 			       sizeof(di.channelmap));
 			di.nrbchan = dev->nrbchan;
-			strcpy(di.name, dev_name(&dev->dev));
+			strscpy(di.name, dev_name(&dev->dev), sizeof(di.name));
 			if (copy_to_user((void __user *)arg, &di, sizeof(di)))
 				err = -EFAULT;
 		} else
@@ -690,6 +681,7 @@ base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 			err = -EFAULT;
 			break;
 		}
+		dn.name[sizeof(dn.name) - 1] = '\0';
 		dev = get_mdevice(dn.id);
 		if (dev)
 			err = device_rename(&dev->dev, dn.name);
diff --git a/drivers/isdn/mISDN/stack.c b/drivers/isdn/mISDN/stack.c
index d97c6dd52223..fa2237e7bcf8 100644
--- a/drivers/isdn/mISDN/stack.c
+++ b/drivers/isdn/mISDN/stack.c
@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *
  * Author	Karsten Keil <kkeil@novell.com>
  *
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #include <linux/slab.h>
diff --git a/drivers/isdn/mISDN/tei.c b/drivers/isdn/mISDN/tei.c
index 58635b5f296f..a4fa594e1caf 100644
--- a/drivers/isdn/mISDN/tei.c
+++ b/drivers/isdn/mISDN/tei.c
@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *
  * Author	Karsten Keil <kkeil@novell.com>
  *
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 #include "layer2.h"
 #include <linux/random.h>
diff --git a/drivers/isdn/mISDN/timerdev.c b/drivers/isdn/mISDN/timerdev.c
index 578978711887..abdf36ac3bee 100644
--- a/drivers/isdn/mISDN/timerdev.c
+++ b/drivers/isdn/mISDN/timerdev.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *
  * general timer device for using in ISDN stacks
@@ -5,16 +6,6 @@
  * Author	Karsten Keil <kkeil@novell.com>
  *
  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #include <linux/poll.h>