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* tty: Remove ancient hardpps()Peter Hurley2013-02-131-4/+0
| | | | | | | | | | | | hardpps() functionality is provided through the N_PPS line discipline now. The new function signature was added in commit 025b40ab (2011-01-12). There was no previous macro or function hardpps(), at least since before the initial commit of v2.6.12 in 2005. It's unlikely this code has been compiled since. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: George Spelvin <linux@horizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* pps: Additional cleanups in uart_handle_dcd_changeGeorge Spelvin2013-02-131-10/+7
| | | | | | | | | An extension of the previous commit, there is no semantic change here, just fewer lines of source code. Signed-off-by: George Spelvin <linux@horizon.com> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* pps: Move timestamp read into PPS code properGeorge Spelvin2013-02-131-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | The PPS (Pulse-Per-Second) line discipline has developed a number of unhealthy attachments to core tty data and functions, ultimately leading to its breakage. The previous patches fixed the crashing. This one reduces coupling further by eliminating the timestamp parameter from the dcd_change ldisc method. This reduces header file linkage and makes the extension more generic, and the timestamp read is delayed only slightly, from just before the ldisc->ops->dcd_change method call to just after. Fix attendant build breakage in drivers/tty/n_tty.c drivers/tty/tty_buffer.c drivers/staging/speakup/selection.c drivers/staging/dgrp/dgrp_*.c Cc: William Hubbs <w.d.hubbs@gmail.com> Cc: Chris Brannon <chris@the-brannons.com> Cc: Kirk Reiser <kirk@braille.uwo.ca> Cc: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: George Spelvin <linux@horizon.com> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tty: serial: uartlite: Support uartlite on big and little endian systemsMichal Simek2013-02-131-22/+79
| | | | | | | | | | | Use big and little endian accessors function to reflect system configuration. Detection is done via control register in ulite_request_port. Tested on Microblaze LE, BE, PPC440 and Arm zynq. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tty: serial: uartlite: Fix sparse and checkpatch warningsMichal Simek2013-02-131-4/+4
| | | | | | | Clean coding style and sparse warnings. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial/arc-uart: Miscll DT related updates (Grant's review comments)Vineet Gupta2013-02-131-6/+4
| | | | | | | | | | | | | | | | -replace "baud" with "current-speed" -if uart alias doesn't exist in DT, don't abort, pick 0 Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Arnd Bergmann <arnd@arndb.de> Cc: devicetree-discuss@lists.ozlabs.org Cc: Rob Herring <rob.herring@calxeda.com> Cc: Rob Landley <rob@landley.net> Cc: linux-serial@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* drivers/serial: add GENERIC_HARDIRQS dependencyHeiko Carstens2013-02-081-1/+1
| | | | | | | | | | | | | | Since SERIAL_CORE needs GENERIC_HARDIRQS (see below) and most serial drivers select it, just add a GENERIC_HARDIRQS dependency to all serial drivers. Fixes the compile error below: drivers/tty/serial/serial_core.c: In function ‘uart_set_info’: drivers/tty/serial/serial_core.c:725:2: error: implicit declaration of function ‘irq_canonicalize’ Cc: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Revert "serial: imx: Move imx_port_ucrs_save/restore under CONFIG_CONSOLE_POLL"fabio.estevam@freescale.com2013-02-061-21/+21
| | | | | | | | | | | This reverts commit cdc8da3998dcc50cee2f81904c16ebdbd7ec2cee. In my attempt to fix a build warning on arm randconfig a build error on imx_v6_v7_defconfig was introduced, so revert it for now. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: imx: Move imx_port_ucrs_save/restore under CONFIG_CONSOLE_POLLFabio Estevam2013-02-051-21/+21
| | | | | | | | | | | | If CONFIG_CONSOLE_POLL is not defined, the following build warning happens: drivers/tty/serial/imx.c:274:13: warning: 'imx_port_ucrs_save' defined but not used [-Wunused-function] drivers/tty/serial/imx.c:283:13: warning: 'imx_port_ucrs_restore' defined but not used [-Wunused-function] Move imx_port_ucrs_saver/restore under CONFIG_CONSOLE_POLL ifdef block to fix it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tty: serial: altera_jtaguart: Simplify altera_jtaguart_init()Tobias Klauser2013-02-051-4/+2
| | | | | | | No need for two separate return statements, consolidate them. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tty: serial: altera_uart: Simplify altera_uart_init()Tobias Klauser2013-02-051-4/+2
| | | | | | | No need for two separate return statements, consolidate them. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* OMAP/serial: Fix incorrect Rx FIFO threshold setting, LSR validation on Tx, ↵Alexey Pelykh2013-02-051-6/+2
| | | | | | | | | | | | | | | | | | and Tx FIFO IRQ generation Original configuration of Rx FIFO threshold contained an error that resulted Rx threshold to be effectively set to 1 character instead of 16 characters, as noted in comments. Checking LSR to contain UART_LSR_THRE bit set caused issue when not all UART_IER_THRI interrupts have been properly handled. This caused gap in Tx data, visible on high baud rates using oscilloscope. Setting OMAP_UART_SCR_TX_EMPTY bit in SCR caused UART_IER_THRI interrupt to be raised only when Tx FIFO and Tx shift registers are empty. Signed-off-by: Alexey Pelykh <alexey.pelykh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tty: of_serial: unexport tegra_serial_handle_breakStephen Warren2013-02-051-3/+4
| | | | | | | | | Tegra is only booted through device-tree now; there are no board files left that use this function. Hence, don't export it. Move the static inline definition into of_serial.c, so we can delete of_serial.h too. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* kgdb: remove #include <linux/serial_8250.h> from kgdb.hGreg Kroah-Hartman2013-02-051-0/+1
| | | | | | | | | There's no reason kgdb.h itself needs to include the 8250 serial port header file. So push it down to the _very_ limited number of individual drivers that need the values in that file, and fix up the places where people really wanted serial_core.h and platform_device.h. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: ralink: adds support for the serial core found on ralink wisocJohn Crispin2013-01-302-3/+11
| | | | | | | | The MIPS based Ralink WiSoC platform has 1 or more 8250 compatible serial cores. To make them work we require the same quirks that are used by AU1x00. Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial/8250: Add suport for later SUNIX (TIMEDIA) boards.Stephen Chivers2013-01-301-0/+33
| | | | | | | | | | | | | | | | | | Add support for later SUNIX (TIMEDIA) Universal PCI Single and Multi-Port Communications Boards. These boards have PCI Vendor ID 1fd4 with device ID 1999 but otherwise appear to be the same as the TIMEDIA boards already supported by 8250_pci and parport_serial. Tested with: a. the two port serial board part number SER5037A, b. the two port serial and one port parallel board part number MIO5079A. Signed-off-by: Stephen Chivers <schivers@csc.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge 3.8-rc5 into tty-nextGreg Kroah-Hartman2013-01-258-8/+69
|\ | | | | | | | | | | This resolves a number of tty driver merge issues found in linux-next Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * 8250/16?50: Add support for Broadcom TruManage redirected serial portStephen Hurd2013-01-173-0/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for the UART device present in Broadcom TruManage capable NetXtreme chips (ie: 5761m 5762, and 5725). This implementation has a hidden transmit FIFO, so running in single-byte interrupt mode results in too many interrupts. The UART_CAP_HFIFO capability was added to track this. It continues to reload the THR as long as the THRE and TSRE bits are set in the LSR up to a specified limit (1024 is used here). Signed-off-by: Stephen Hurd <shurd@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * serial:ifx6x60:Keep word size accordance with SPI controllerchanning2013-01-161-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | As protocol driver, IFX SPI driver initiate to setup SPI master with default SPI word size as 16 bit/word, however, SPI master may not adopt this default value due to SPI controller's capability, it might choose an available value by itself and set it to spi_device.bits_per_word. In order to keep align with Controller, IFX driver should make use of this value during SPI transfer, but the default one. Signed-off-by: Chen Jun <jun.d.chen@intel.com> Signed-off-by: channing <chao.bi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * tty: 8250_dw: Fix inverted arguments to serial_out in IRQ handlerMaxime Ripard2013-01-161-1/+1
| | | | | | | | | | | | Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * serial: samsung: remove redundant setting of line config during port resetThomas Abraham2013-01-161-1/+0
| | | | | | | | | | | | | | | | | | | | The setting of uart line control configuration in s3c24xx_serial_resetport is can be removed since the 'set_termios' call will overwrite any ULCON register setting which s3c24xx_serial_resetport does. Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * serial:ifx6x60:Delete SPI timer when shut down portchao bi2013-01-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | When shut down SPI port, it's possible that MRDY has been asserted and a SPI timer was activated waiting for SRDY assert, in the case, it needs to delete this timer. Signed-off-by: Chen Jun <jun.d.chen@intel.com> Signed-off-by: channing <chao.bi@intel.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * tty/8250: The correct device id for this card is 0x0022Matt Schulte2013-01-161-1/+1
| | | | | | | | | | | | | | | | The correct device id for this card is 0x0022 Signed-off-by: Matt Schulte <matts@commtech-fastcom.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * tty/8250: pbn_b0_8_1152000_200 is supposed to be an 8 port definitionMatt Schulte2013-01-161-1/+1
| | | | | | | | | | | | | | | | tty/8250: pbn_b0_8_1152000_200 is supposed to be an 8 port definition Signed-off-by: Matt Schulte <matts@commtech-fastcom.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * tty: serial: vt8500: fix return value check in vt8500_serial_probe()Wei Yongjun2013-01-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | In case of error, function of_clk_get() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Tony Prisk <linux@prisktech.co.nz> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * serial: mxs-auart: Index is unsignedfabio.estevam@freescale.com2013-01-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | Fix the following warning when building with W=1 option: drivers/tty/serial/mxs-auart.c: In function 'mxs_auart_tx_chars': drivers/tty/serial/mxs-auart.c:272:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * mxs: uart: fix setting RTS from softwareSteffen Trumtrar2013-01-161-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | With the patch "serial: mxs-auart: fix the wrong RTS hardware flow control" the mainline mxs-uart driver now sets RTSEN only when hardware flow control is enabled via software. It is not possible any longer to set RTS manually via software. However, the manual modification is a valid operation. Regain the possibility to set RTS via software and only set RTSEN when hardware flow control is explicitly enabled via settermios cflag CRTSCTS. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Cc: stable <stable@vger.kernel.org> Reviewed-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: tegra: Fix compilation errorVenu Byravarasu2013-01-251-1/+1
| | | | | | | | | | | | | | | | | | Fix compilation error, by adding the correct header file for Tegra clocks. Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: pxa: fine-tune clk useageYi Zhang2013-01-251-1/+11
| | | | | | | | | | | | | | | | 1) add clk_enable/disable in serial_pxa_console_write() 2) add clk_prepare() to follow common clock driver Signed-off-by: Yi Zhang <yizhang@marvell.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: pch_uart: fix sysrq handling for pch_uartLiang Li2013-01-251-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When PCH_UART_CONSOLE and SERIAL_CORE_CONSOLE is not set neither, the uart_port will have no 'sysrq' member hence their will need a '#ifdef' in pch_uart.c to handle the case, otherwise we'll see compile error like this: CC [M] drivers/tty/serial/pch_uart.o drivers/tty/serial/pch_uart.c: In function 'pch_uart_hal_read': drivers/tty/serial/pch_uart.c:572:11: error: 'struct uart_port' has no member named 'sysrq' make[4]: *** [drivers/tty/serial/pch_uart.o] Error 1 Reported-by: Randy Dunlap <rdunlap@infradead.org> CC: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Liang Li <liang.li@windriver.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: xilinx_uartps: Remove leftover __exit_p()Michal Simek2013-01-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | __exit_p() need to be removed after the __devexit removal from the driver. Warning log: drivers/tty/serial/xilinx_uartps.c:996:12: warning: 'xuartps_remove' defined but not used [-Wunused-function] Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial:ifx6x60: Remove memset for SPI framechanning2013-01-221-1/+0
| | | | | | | | | | | | | | | | | | | | | | There is no need to memset 0 to SPI frame memory before preparing transfer frame bits, because SPI frame header are encoded with valid data size, so don't need to worry about adopting dirty bits, more, memset zero for each SPI frame may impact the spi throughput efficiency. Signed-off-by: Chen Jun <jun.d.chen@intel.com> Signed-off-by: channing <chao.bi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: sccnxp: Make baudrate table struct staticAlexander Shiyan2013-01-211-4/+2
| | | | | | | | | | | | | | This struct is used only for driver, so it should be static. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: sccnxp: Reset break and overrun bits in RX handlerAlexander Shiyan2013-01-211-1/+6
| | | | | | | | | | | | | | | | | | This patch adds a hardware reset the break and overflow bits for these events. Without resetting the bits they will be reported to the core every time, when once occur. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial/efm32: parse location propertyUwe Kleine-König2013-01-211-7/+24
| | | | | | | | | | | | | | | | The non-dt probing allowed passing the location via platform data from the beginning. So make up leeway for device tree probing. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: xilinx_uartps: Get clock rate info from dtsJosh Cartwright2013-01-211-15/+19
| | | | | | | | | | | | | | | | | | | | | | | | Add support for specifying clock information for the uart clk via the device tree. This eliminates the need to hardcode rates in the device tree. Signed-off-by: Josh Cartwright <josh.cartwright@ni.com> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | pch_uart: add sysrq supportLiang Li2013-01-211-8/+19
| | | | | | | | | | | | | | | | | | | | | | | | When send break to the uart port, we always get 'frame error', but we can not just reset receive fifo in such case, otherwise the sysrq cmd will not be received correctly. When we handle sysrq output via pch_console_write, the priv lock has already been taken so no need to take the lock in pch_console_write. Signed-off-by: Liang Li <liang.li@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | pch_uart: fix a deadlock when pch_uart as consoleLiang Li2013-01-211-7/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we use pch_uart as system console like 'console=ttyPCH0,115200', then 'send break' to it. We'll encounter the deadlock on a cpu/core, with interrupts disabled on the core. When we happen to have all irqs affinity to cpu0 then the deadlock on cpu0 actually deadlock whole system. In pch_uart_interrupt, we have spin_lock_irqsave(&priv->lock, flags) then call pch_uart_err_ir when break is received. Then the call to dev_err would actually call to pch_console_write then we'll run into another spin_lock(&priv->lock), with interrupts disabled. So in the call sequence lead by pch_uart_interrupt, we should be carefully to call functions that will 'print message to console' only in case the uart port is not being used as serial console. Signed-off-by: Liang Li <liang.li@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | drivers/tty/serial/8250: use strlcpy instead of strcpyChen Gang2013-01-211-1/+1
| | | | | | | | | | | | | | The fields must be null-terminated, or next printk for %s, will cause issue. Signed-off-by: Chen Gang <gang.chen@asianux.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | tty: Added a CONFIG_TTY option to allow removal of TTYJoe Millenbach2013-01-191-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The option allows you to remove TTY and compile without errors. This saves space on systems that won't support TTY interfaces anyway. bloat-o-meter output is below. The bulk of this patch consists of Kconfig changes adding "depends on TTY" to various serial devices and similar drivers that require the TTY layer. Ideally, these dependencies would occur on a common intermediate symbol such as SERIO, but most drivers "select SERIO" rather than "depends on SERIO", and "select" does not respect dependencies. bloat-o-meter output comparing our previous minimal to new minimal by removing TTY. The list is filtered to not show removed entries with awk '$3 != "-"' as the list was very long. add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350) function old new delta chr_dev_init 166 170 +4 allow_signal 80 82 +2 static.__warned 143 142 -1 disallow_signal 63 62 -1 __set_special_pids 95 94 -1 unregister_console 126 121 -5 start_kernel 546 541 -5 register_console 593 588 -5 copy_from_user 45 40 -5 sys_setsid 128 120 -8 sys_vhangup 32 19 -13 do_exit 1543 1526 -17 bitmap_zero 60 40 -20 arch_local_irq_save 137 117 -20 release_task 674 652 -22 static.spin_unlock_irqrestore 308 260 -48 Signed-off-by: Joe Millenbach <jmillenbach@gmail.com> Reviewed-by: Jamey Sharp <jamey@minilop.net> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: lpc32xx: Fix fallout from tty_port conversionThierry Reding2013-01-191-1/+1
| | | | | | | | | | | | | | | | | | | | A duplicate definition of the port variable was introduced in the interrupt handler, which causes the build to break. The fix is to rename the variable to tport, which is already properly used in subsequent code. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: vt8500: Cleanup code using devm_ functionTony Prisk2013-01-181-9/+4
| | | | | | | | | | | | | | | | | | | | | | Convert the last memory allocation (vt8500_port) to use devm_kzalloc and remove the fail path cleanup code from vt8500_serial_probe. Reorder iomem mapping above clk_enable to simplify fail code. The clock is only enabled if all other resources are available. Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: vt8500: UART uses gated clock rather than 24Mhz referenceTony Prisk2013-01-181-15/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | UART modules on Wondermedia SoCs are connected via a gated clock source, rather than directly to the 24Mhz reference clock. While uboot enables UART0 for debugging, other UART ports are unavailable until the clock is enabled. This patch checks that a valid clock is actually passed from devicetree, enables the clock in probe. This change removes the fallback when a clock was not specified as it doesn't apply any longer (and would only work if the UART clock was already enabled). DTSI files are updated for VT8500, WM8505 and WM8650. Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: tegra: Switch to using struct tty_portThierry Reding2013-01-181-12/+15
| | | | | | | | | | | | | | | | | | Many of the tty functions were converted to use a struct tty_port instead of a struct tty_struct. Update the Tegra driver accordingly to avoid build breakage. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: imx: Remove unused 'tty' variableFabio Estevam2013-01-181-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | Commit 2e124b4a39 (TTY: switch tty_flip_buffer_push) introduced the following build warning: drivers/tty/serial/imx.c:519:21: warning: unused variable 'tty' [-Wunused-variable] Remove the unused 'tty' variable. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: pxa: Do not tweak clock in pxa serial write() functionHaojun Bao2013-01-181-2/+0
| | | | | | | | | | | | | | | | | | The write() function could be used by printk(), which is atomic and tweaking clock there can cause "BUG: sleeping function called from invalid context". Signed-off-by: Bao Haojun <hjbao@marvell.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: sccnxp: Fix possible crash if no platform data suppliedAlexander Shiyan2013-01-181-2/+2
| | | | | | | | | | | | | | | | | | This patch fix possible kernel crash if no platform data supplied. We should not use platform data in this case, instead we will use default values from private driver structure. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: rp2: New driver for Comtrol RocketPort 2 cardsKevin Cernekee2013-01-183-0/+910
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver supports the RocketPort EXPRESS and RocketPort INFINITY families of PCI/PCIe multiport serial adapters. These adapters use a "RocketPort 2" ASIC that is not compatible with the original RocketPort driver (CONFIG_ROCKETPORT). Tested with the RocketPort EXPRESS Octa DB9 and Quad DB9. Also added an old RocketPort 8J PCI card to the same system to verify that rocket.c and rp2.c coexist peacefully. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: vt8500: ioremap'd resource is never freedTony Prisk2013-01-181-2/+2
| | | | | | | | | | | | | | | | | | | | | | Memory mapped via ioremap call is never released. Rather than add an iounmap call, change allocation function to devm_request_and_ioremap. Also, change the error on failure for this call to -EADDRNOTAVAIL rather than -ENOMEM. Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | serial: vt8500: Fix range-checking on vt8500_uart_portsTony Prisk2013-01-181-2/+2
| | | | | | | | | | | | | | | | Fix two instances where the index to vt8500_uart_ports is tested against > VT8500_MAX_PORTS. Correct usage should be >= VT8500_MAX_PORTS. Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-31 00:09:05 +0100