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path: root/drivers/isdn/gigaset/bas-gigaset.c (follow)
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* isdn: move capi drivers to stagingArnd Bergmann2019-05-311-2675/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I tried to find any indication of whether the capi drivers are still in use, and have not found anything from a long time ago. With public ISDN networks almost completely shut down over the past 12 months, there is very little you can actually do with this hardware. The main remaining use case would be to connect ISDN voice phones to an in-house installation with Asterisk or LCR, but anyone trying this in turn seems to be using either the mISDN driver stack, or out-of-tree drivers from the hardware vendors. I may of course have missed something, so I would suggest moving these three drivers (avm, hysdn, gigaset) into drivers/staging/ just in case someone still uses them. If nobody complains, we can remove them entirely in six months, or otherwise move the core code and any drivers that are still needed back into drivers/isdn. As Paul Bolle notes, he is still testing the gigaset driver as long as he can, but the Dutch ISDN network will be shut down in September 2019, which puts an end to that. Marcel Holtmann still maintains the Bluetooth CMTP profile and wants to keep that alive, so the actual CAPI subsystem code remains in place for now, after all other drivers are gone, CMTP and CAPI can be merged into a single driver directory. Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* isdn: bas_gigaset: use usb_fill_int_urb() properlyPaul Bolle2019-05-051-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The switch to make bas_gigaset use usb_fill_int_urb() - instead of filling that urb "by hand" - missed the subtle ordering of the previous code. See, before the switch urb->dev was set to a member somewhere deep in a complicated structure and then supplied to usb_rcvisocpipe() and usb_sndisocpipe(). After that switch urb->dev wasn't set to anything specific before being supplied to those two macros. This triggers a nasty oops: BUG: unable to handle kernel NULL pointer dereference at 00000000 #PF error: [normal kernel read fault] *pde = 00000000 Oops: 0000 [#1] SMP CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.1.0-0.rc4.1.local0.fc28.i686 #1 Hardware name: IBM 2525FAG/2525FAG, BIOS 74ET64WW (2.09 ) 12/14/2006 EIP: gigaset_init_bchannel+0x89/0x320 [bas_gigaset] Code: 75 07 83 8b 84 00 00 00 40 8d 47 74 c7 07 01 00 00 00 89 45 f0 8b 44 b7 68 85 c0 0f 84 6a 02 00 00 8b 48 28 8b 93 88 00 00 00 <8b> 09 8d 54 12 03 c1 e2 0f c1 e1 08 09 ca 8b 8b 8c 00 00 00 80 ca EAX: f05ec200 EBX: ed404200 ECX: 00000000 EDX: 00000000 ESI: 00000000 EDI: f065a000 EBP: f30c9f40 ESP: f30c9f20 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010086 CR0: 80050033 CR2: 00000000 CR3: 0ddc7000 CR4: 000006d0 Call Trace: <SOFTIRQ> ? gigaset_isdn_connD+0xf6/0x140 [gigaset] gigaset_handle_event+0x173e/0x1b90 [gigaset] tasklet_action_common.isra.16+0x4e/0xf0 tasklet_action+0x1e/0x20 __do_softirq+0xb2/0x293 ? __irqentry_text_end+0x3/0x3 call_on_stack+0x45/0x50 </SOFTIRQ> ? irq_exit+0xb5/0xc0 ? do_IRQ+0x78/0xd0 ? acpi_idle_enter_s2idle+0x50/0x50 ? common_interrupt+0xd4/0xdc ? acpi_idle_enter_s2idle+0x50/0x50 ? sched_cpu_activate+0x1b/0xf0 ? acpi_fan_resume.cold.7+0x9/0x18 ? cpuidle_enter_state+0x152/0x4c0 ? cpuidle_enter+0x14/0x20 ? call_cpuidle+0x21/0x40 ? do_idle+0x1c8/0x200 ? cpu_startup_entry+0x25/0x30 ? rest_init+0x88/0x8a ? arch_call_rest_init+0xd/0x19 ? start_kernel+0x42f/0x448 ? i386_start_kernel+0xac/0xb0 ? startup_32_smp+0x164/0x168 Modules linked in: ppp_generic slhc capi bas_gigaset gigaset kernelcapi nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables sunrpc ipw2200 iTCO_wdt gpio_ich snd_intel8x0 libipw iTCO_vendor_support snd_ac97_codec lib80211 ppdev ac97_bus snd_seq cfg80211 snd_seq_device pcspkr thinkpad_acpi lpc_ich snd_pcm i2c_i801 snd_timer ledtrig_audio snd soundcore rfkill parport_pc parport pcc_cpufreq acpi_cpufreq i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sdhci_pci sysimgblt cqhci fb_sys_fops drm sdhci mmc_core tg3 ata_generic serio_raw yenta_socket pata_acpi video CR2: 0000000000000000 ---[ end trace 1fe07487b9200c73 ]--- EIP: gigaset_init_bchannel+0x89/0x320 [bas_gigaset] Code: 75 07 83 8b 84 00 00 00 40 8d 47 74 c7 07 01 00 00 00 89 45 f0 8b 44 b7 68 85 c0 0f 84 6a 02 00 00 8b 48 28 8b 93 88 00 00 00 <8b> 09 8d 54 12 03 c1 e2 0f c1 e1 08 09 ca 8b 8b 8c 00 00 00 80 ca EAX: f05ec200 EBX: ed404200 ECX: 00000000 EDX: 00000000 ESI: 00000000 EDI: f065a000 EBP: f30c9f40 ESP: cddcb3bc DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010086 CR0: 80050033 CR2: 00000000 CR3: 0ddc7000 CR4: 000006d0 Kernel panic - not syncing: Fatal exception in interrupt Kernel Offset: 0xcc00000 from 0xc0400000 (relocation range: 0xc0000000-0xf6ffdfff) ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]--- No-one noticed because this Oops is apparently only triggered by setting up an ISDN data connection on a live ISDN line on a gigaset base (ie, the PBX that the gigaset driver support). Very few people do that running present day kernels. Anyhow, a little code reorganization makes this problem go away, while avoiding the subtle ordering that was used in the past. So let's do that. Fixes: 78c696c19578 ("isdn: gigaset: use usb_fill_int_urb()") Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn: mark expected switch fall-throughsGustavo A. R. Silva2018-07-041-0/+3
| | | | | | | | | | In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Warning level 2 was used: -Wimplicit-fallthrough=2 Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn: gigaset: use usb_fill_int_urb()Sebastian Andrzej Siewior2018-06-221-14/+12
| | | | | | | | | | | | | Using usb_fill_int_urb() helps to find code which initializes an URB. A grep for members of the struct (like ->complete) reveal lots of other things, too. Cc: Paul Bolle <pebolle@tiscali.nl> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: gigaset307x-common@lists.sourceforge.net Cc: netdev@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: Provide cardstate context for bas timer callbacksKees Cook2017-10-231-8/+6
| | | | | | | | | | | | | | | | | | While the work callback uses the urb to find cardstate from bas_cardstate, this may not be valid for timer callbacks. Instead, introduce a direct pointer back to the cardstate from bas_cardstate for use in timer callbacks. Reported-by: Paul Bolle <pebolle@tiscali.nl> Fixes: 4cfea08e6251 ("isdn/gigaset: Convert timers to use timer_setup()") Cc: Paul Bolle <pebolle@tiscali.nl> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Johan Hovold <johan@kernel.org> Cc: gigaset307x-common@lists.sourceforge.net Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: Convert timers to use timer_setup()Kees Cook2017-10-181-16/+20
| | | | | | | | | | | | | | | In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Paul Bolle <pebolle@tiscali.nl> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Johan Hovold <johan@kernel.org> Cc: gigaset307x-common@lists.sourceforge.net Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: Use kzalloc instead of open-coded field zeroingKees Cook2017-10-181-9/+1
| | | | | | | | | | | | | | This replaces a kmalloc followed by a bunch of per-field zeroing with a single kzalloc call, reducing the lines of code. Cc: Paul Bolle <pebolle@tiscali.nl> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Johan Hovold <johan@kernel.org> Cc: gigaset307x-common@lists.sourceforge.net Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: fix NULL-deref at probeJohan Hovold2017-03-131-0/+3
| | | | | | | | | | | | | Make sure to check the number of endpoints to avoid dereferencing a NULL-pointer should a malicious device lack endpoints. Fixes: cf7776dc05b8 ("[PATCH] isdn4linux: Siemens Gigaset drivers - direct USB connection") Cc: stable <stable@vger.kernel.org> # 2.6.17 Cc: Hansjoerg Lipp <hjlipp@web.de> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: use designated initializersKees Cook2016-12-171-16/+16
| | | | | | | | | | Prepare to mark sensitive kernel structures for randomization by making sure they're using designated initializers. These were identified during allyesconfig builds of x86, arm, and arm64, with most initializer fixes extracted from grsecurity. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/bas_gigaset: use USB API functions rather than constantsHimangi Saraogi2014-08-221-1/+1
| | | | | | | | | | | | | | | | This patch introduces the use of the function usb_endpoint_num. The Coccinelle semantic patch that makes these changes is as follows: @@ struct usb_endpoint_descriptor *epd; @@ - (epd->bEndpointAddress & \(USB_ENDPOINT_NUMBER_MASK\|0x0f\)) + usb_endpoint_num(epd) Signed-off-by: Himangi Saraogi <himangi774@gmail.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Acked-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/bas_gigaset: fix a leak on failure path in gigaset_probe()Alexey Khoroshilov2014-07-291-0/+1
| | | | | | | | | | There is a lack of usb_put_dev(udev) on failure path in gigaset_probe(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Acked-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* bas_gigaset: fix pre_reset handlingTilman Schmidt2012-10-261-3/+16
| | | | | | | | | | | | | | The delayed work function int_in_work() may call usb_reset_device() and thus, indirectly, the driver's pre_reset method. Trying to cancel the work synchronously in that situation would deadlock. Fix by avoiding cancel_work_sync() in the pre_reset method. If the reset was NOT initiated by int_in_work() this might cause int_in_work() to run after the post_reset method, with urb_int_in already resubmitted, so handle that case gracefully. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge tag 'usb-3.5-rc1' of ↵Linus Torvalds2012-05-231-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB 3.5-rc1 changes from Greg Kroah-Hartman: "Here is the big USB 3.5-rc1 pull request for the 3.5-rc1 merge window. It's touches a lot of different parts of the kernel, all USB drivers, due to some API cleanups (getting rid of the ancient err() macro) and some changes that are needed for USB 3.0 power management updates. There are also lots of new drivers, pimarily gadget, but others as well. We deleted a staging driver, which was nice, and finally dropped the obsolete usbfs code, which will make Al happy to never have to touch that again. There were some build errors in the tree that linux-next found a few days ago, but those were fixed by the most recent changes (all were due to us not building with CONFIG_PM disabled.) Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" * tag 'usb-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (477 commits) xhci: Fix DIV_ROUND_UP compile error. xhci: Fix compile with CONFIG_USB_SUSPEND=n USB: Fix core compile with CONFIG_USB_SUSPEND=n brcm80211: Fix compile error for .disable_hub_initiated_lpm. Revert "USB: EHCI: work around bug in the Philips ISP1562 controller" MAINTAINERS: Add myself as maintainer to the USB PHY Layer USB: EHCI: fix command register configuration lost problem USB: Remove races in devio.c USB: ehci-platform: remove update_device USB: Disable hub-initiated LPM for comms devices. xhci: Add Intel U1/U2 timeout policy. xhci: Add infrastructure for host-specific LPM policies. USB: Add macros for interrupt endpoint types. xhci: Reserve one command for USB3 LPM disable. xhci: Some Evaluate Context commands must succeed. USB: Disable USB 3.0 LPM in critical sections. USB: Add support to enable/disable USB3 link states. USB: Allow drivers to disable hub-initiated LPM. USB: Calculate USB 3.0 exit latencies for LPM. USB: Refactor code to set LPM support flag. ... Conflicts: arch/arm/mach-exynos/mach-nuri.c arch/arm/mach-exynos/mach-universal_c210.c drivers/net/wireless/ath/ath6kl/usb.c
| * USB: Disable hub-initiated LPM for comms devices.Sarah Sharp2012-05-191-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hub-initiated LPM is not good for USB communications devices. Comms devices should be able to tell when their link can go into a lower power state, because they know when an incoming transmission is finished. Ideally, these devices would slam their links into a lower power state, using the device-initiated LPM, after finishing the last packet of their data transfer. If we enable the idle timeouts for the parent hubs to enable hub-initiated LPM, we will get a lot of useless LPM packets on the bus as the devices reject LPM transitions when they're in the middle of receiving data. Worse, some devices might blindly accept the hub-initiated LPM and power down their radios while they're in the middle of receiving a transmission. The Intel Windows folks are disabling hub-initiated LPM for all USB communications devices under a xHCI USB 3.0 host. In order to keep the Linux behavior as close as possible to Windows, we need to do the same in Linux. Set the disable_hub_initiated_lpm flag for for all USB communications drivers. I know there aren't currently any USB 3.0 devices that implement these class specifications, but we should be ready if they do. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: Johan Hedberg <johan.hedberg@gmail.com> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Tilman Schmidt <tilman@imap.cc> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Jan Dumon <j.dumon@option.com> Cc: Petko Manolov <petkan@users.sourceforge.net> Cc: Steve Glendinning <steve.glendinning@smsc.com> Cc: "John W. Linville" <linville@tuxdriver.com> Cc: Kalle Valo <kvalo@qca.qualcomm.com> Cc: "Luis R. Rodriguez" <mcgrof@qca.qualcomm.com> Cc: Jouni Malinen <jouni@qca.qualcomm.com> Cc: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com> Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com> Cc: Christian Lamparter <chunkeey@googlemail.com> Cc: Brett Rudley <brudley@broadcom.com> Cc: Roland Vossen <rvossen@broadcom.com> Cc: Arend van Spriel <arend@broadcom.com> Cc: "Franky (Zhenhui) Lin" <frankyl@broadcom.com> Cc: Kan Yan <kanyan@broadcom.com> Cc: Dan Williams <dcbw@redhat.com> Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Cc: Ivo van Doorn <IvDoorn@gmail.com> Cc: Gertjan van Wingerde <gwingerde@gmail.com> Cc: Helmut Schaa <helmut.schaa@googlemail.com> Cc: Herton Ronaldo Krzesinski <herton@canonical.com> Cc: Hin-Tak Leung <htl10@users.sourceforge.net> Cc: Larry Finger <Larry.Finger@lwfinger.net> Cc: Chaoming Li <chaoming_li@realsil.com.cn> Cc: Daniel Drake <dsd@gentoo.org> Cc: Ulrich Kunitz <kune@deine-taler.de> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
* | isdn/gigaset: unify function return valuesTilman Schmidt2012-05-081-14/+19
| | | | | | | | | | | | | | | | | | | | Various functions in the Gigaset driver were using different conventions for the meaning of their int return values. Align them to the usual negative error numbers convention. Inspired-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* | isdn/gigaset: fix readability damageTilman Schmidt2012-05-081-6/+5
|/ | | | | | | | Fix up some of the readibility deterioration caused by the recent whitespace coding style cleanup. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn: whitespace coding style cleanupJoe Perches2012-02-211-21/+21
| | | | | | | | | | | | | | | isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
* isdn: gigaset: Fix set-but-unused variable.David S. Miller2011-04-181-5/+0
| | | | | | | The variable 'offset' is set but unused in write_iso_tasklet(). Just kill it off. Signed-off-by: David S. Miller <davem@davemloft.net>
* tree-wide: fix comment/printk typosUwe Kleine-König2010-11-011-2/+2
| | | | | | | | | | "gadget", "through", "command", "maintain", "maintain", "controller", "address", "between", "initiali[zs]e", "instead", "function", "select", "already", "equal", "access", "management", "hierarchy", "registration", "interest", "relative", "memory", "offset", "already", Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* isdn/gigaset: improve bas_gigaset USB error reportingTilman Schmidt2010-10-011-51/+61
| | | | | | | | | Rephrase some USB error messages to make them clearer and more consistent. Downgrade some warning messages that may occur during normal operation to debug messages. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: fix bas_gigaset interrupt read error handlingTilman Schmidt2010-10-011-13/+93
| | | | | | | | | Rework the handling of USB errors in interrupt input reads to clear halts correctly, delay URB resubmission after errors, limit retries, and improve error recovery. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: unclog bas_gigaset AT response pipeTilman Schmidt2010-10-011-0/+22
| | | | | | | | Recover from a lost HD_RECEIVEATDATA_ACK message by sending a zero-length HD_READ_ATMESSAGE command when ev_layer sends "+++". Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: try USB reset for bas_gigaset error recoveryTilman Schmidt2010-10-011-2/+4
| | | | | | | | | In error_reset(), if sending HD_RESET_INTERRUPT_PIPE to the device fails, try performing an USB reset. Also correct an error in the leading comment. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: bas_gigaset timer cleanupTilman Schmidt2010-10-011-33/+32
| | | | | | | | | Use setup_timer() and mod_timer() instead of direct assignment to timer structure members, simplify the argument of one timer routine, and make extra sure all timers are stopped during suspend. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: fix bas_gigaset AT read error handlingTilman Schmidt2010-10-011-50/+33
| | | | | | | | | | Rework the handling of USB errors in AT response reads to fix a possible infinite retry loop and a memory leak, and silence a few overly verbose kernel messages. Signed-off-by: Tilman Schmidt <tilman@imap.cc> CC: stable <stable@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: bas_gigaset locking fixTilman Schmidt2010-10-011-3/+3
| | | | | | | | | Unlock cs->lock before calling error_hangup() which is marked "cs->lock must not be held". Signed-off-by: Tilman Schmidt <tilman@imap.cc> CC: stable <stable@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn: gigaset: use after freeDan Carpenter2010-08-081-2/+4
| | | | | | | I moved the kfree(cb) below the dereferences. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: drop debug check on isochronous writeTilman Schmidt2010-07-081-18/+0
| | | | | | | | | | With CONFIG_GIGASET_DEBUG set, every isochronous USB frame after an erroneous one was checked for more errors. This produced only noise messages in practice, so drop it. Impact: cleanup Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* isdn/gigaset: avoid copying AT commands twiceTilman Schmidt2010-07-081-40/+11
| | | | | | | | | | Change the Gigaset driver's internal write_cmd interface to accept a cmdbuf structure instead of a string. This avoids copying formatted AT commands a second time. Impact: optimization Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* gigaset: include cleanup cleanupTilman Schmidt2010-04-181-5/+0
| | | | | | | | | | | | | Commit 5a0e3ad causes slab.h to be included twice in many of the Gigaset driver's source files, first via the common include file gigaset.h and then a second time directly. Drop the spares, and use the opportunity to clean up a few more similar cases. Impact: cleanup, no functional change Signed-off-by: Tilman Schmidt <tilman@imap.cc> CC: Tejun Heo <tj@kernel.org> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* gigaset: reduce syslog clutterTilman Schmidt2010-02-261-12/+6
| | | | | | | | | | Improve readability of the Gigaset driver's kernel messages by removing a few unnecessary messages and limiting the emission of some debug messages more narrowly. Impact: logging Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/isdn/gigaset: tasklet_init - Remove unnecessary leading & from ↵Joe Perches2009-11-191-2/+2
| | | | | | | | | | | | | | | | | | | | | | | second arg Changed function pointer use from non-majority address-of style to majority short form without & via: grep -rPl "\btasklet_init\s*\([^,\)]+,\s*\&" drivers/isdn | while read file ; do \ perl -i -e 'local $/; while (<>) { s@(\btasklet_init\s*\([^,\)]+,\s*)\&@\1@g ; print ; }' $file ;\ done Compile tested allyesconfig x86 Signed-off-by: Joe Perches <joe@perches.com> drivers/isdn/gigaset/bas-gigaset.c | 4 ++-- drivers/isdn/gigaset/common.c | 2 +- drivers/isdn/gigaset/interface.c | 2 +- drivers/isdn/gigaset/ser-gigaset.c | 2 +- drivers/isdn/gigaset/usb-gigaset.c | 2 +- 5 files changed, 6 insertions(+), 6 deletions(-) Signed-off-by: David S. Miller <davem@davemloft.net>
* bas_gigaset: checkpatch cleanupTilman Schmidt2009-10-291-27/+41
| | | | | | | | On the quest for the holy grail of checkpatch.pl silence. Impact: cosmetic Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* gigaset: prepare for CAPI implementationTilman Schmidt2009-10-071-2/+2
| | | | | | | | | | Reorganize the code of the Gigaset driver, moving all isdn4linux dependencies to the source file i4l.c so that it can be replaced by a file capi.c interfacing to Kernel CAPI instead. Impact: refactoring, no functional change Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* gigaset: improve error recoveryTilman Schmidt2009-10-071-24/+45
| | | | | | | | | When the Gigaset base stops responding, try resetting the USB connection to recover. Impact: error handling improvement Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* gigaset: handle isoc frame errors more gracefullyTilman Schmidt2009-10-071-11/+7
| | | | | | | | Don't drop the remainder of an URB if an isochronous frame has an error. Impact: error handling improvement Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* bas_gigaset: use tasklet_hi_schedule for timing critical taskletsTilman Schmidt2009-04-071-2/+2
| | | | | | | | | The tasklets for isochronous data transfer need to run within 8 msec to avoid over/underruns, so schedule them with high priority to fix reported issues with occasional over/underruns. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* bas_gigaset: correctly allocate USB interrupt transfer bufferTilman Schmidt2009-03-191-3/+13
| | | | | | | | | | Every USB transfer buffer has to be allocated individually by kmalloc. Impact: bugfix, no functional change Signed-off-by: Tilman Schmidt <tilman@imap.cc> Tested-by: Kolja Waschk <kawk@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* gigaset: use pr_err() and pr_info()Tilman Schmidt2008-12-261-5/+7
| | | | | | | | | Switch from private printk wrapper macros to using pr_err() and pr_info() from linux/kernel.h, at the same time unifying a few error messages. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* gigaset: get rid of info() and warn() macrosTilman Schmidt2008-11-301-2/+1
| | | | | | | | | Join the move away from the obsolete info() macro, opencoding the remaining uses. While we're at it, also get rid of the warn() macro by promoting the three remaining uses to err(). Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* gigaset: gigaset_isowbuf_getbytes() may return signed unnoticedTilman Schmidt2008-07-241-6/+6
| | | | | | | | | | ifd->offset is unsigned. gigaset_isowbuf_getbytes() may return signed unnoticed. Revised version of patch originally submitted by Roel Kluin <12o3l@tiscali.nl>. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Gigaset: permit module unloadTilman Schmidt2008-02-061-41/+39
| | | | | | | | | | | | Fix the initialization and reference counting of the Gigaset driver modules so that they can be unloaded when they are not actually in use. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Greg KH <gregkh@suse.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gigaset: atomic cleanupTilman Schmidt2008-02-061-45/+41
| | | | | | | | | Convert atomic_t variables that don't actually use atomic_t functionality to int. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* bas_gigaset: suspend supportTilman Schmidt2008-02-061-2/+164
| | | | | | | | | | | | | | | | Add basic suspend/resume support to the bas_gigaset ISDN driver for the Siemens Gigaset SX255 series of ISDN DECT bases. Only the USB aspects are handled so far; the ISDN subsystem is not notified in any way, for lack of information about how to do that. The driver will refuse to suspend if a connection is active. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Greg KH <gregkh@suse.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gigaset: code cleanupsTilman Schmidt2008-02-061-22/+23
| | | | | | | | | | | | | | | Some cleanups to the bas-gigaset and usb-gigaset USB ISDN drivers: - simplified error handling - improved debug messages - readability improvements - removal of obsolete defines and comments Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Greg KH <gregkh@suse.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gigaset: clean up urb->status usageTilman Schmidt2008-02-061-36/+48
| | | | | | | | | | | | Make there only be one reference to urb->status per URB callback, and none outside, in preparation for removal of that field. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Greg KH <gregkh@suse.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gigaset: remove pointless lockingTilman Schmidt2007-10-161-8/+1
| | | | | | | | | | Remove pointless taking of spinlock around reading a single pointer-sized or smaller variable. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] drivers/isdn/gigaset: mark some static data as const (v2)Tilman Schmidt2007-03-291-2/+2
| | | | | | | | | | Mark some static arrays as const that aren't and shouldn't be modified, and remove incorrect static attribute from some variables. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Hansjoerg Lipp <hjlipp@web.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] fix gregkh-usb-usbcore-remove-unused-bandwith-related-codeAndrew Morton2007-02-111-2/+2
| | | | | | | | | | drivers/isdn/gigaset/bas-gigaset.c: In function 'dump_urb': drivers/isdn/gigaset/bas-gigaset.c:258: error: 'struct urb' has no member named 'bandwidth' Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] isdn/gigaset: fix possible missing wakeupTilman Schmidt2006-12-131-66/+52
| | | | | | | | | | | | | | | Eliminate some possibilities for user processes writing to the Gigaset character device to be left sleeping indefinitely, by adding wakeup calls to error paths and properly disposing of pending write requests when the device is disconnected. It also removes unnecessary NULL checks before usb_free_urb() and usb_kill_urb() calls. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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