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2018-01-17ALSA: aloop: Fix racy hw constraints adjustmentTakashi Iwai
commit 898dfe4687f460ba337a01c11549f87269a13fa2 upstream. The aloop driver tries to update the hw constraints of the connected target on the cable of the opened PCM substream. This is done by adding the extra hw constraints rules referring to the substream runtime->hw fields, while the other substream may update the runtime hw of another side on the fly. This is, however, racy and may result in the inconsistent values when both PCM streams perform the prepare concurrently. One of the reason is that it overwrites the other's runtime->hw field; which is not only racy but also broken when it's called before the open of another side finishes. And, since the reference to runtime->hw isn't protected, the concurrent write may give the partial value update and become inconsistent. This patch is an attempt to fix and clean up: - The prepare doesn't change the runtime->hw of other side any longer, but only update the cable->hw that is referred commonly. - The extra rules refer to the loopback_pcm object instead of the runtime->hw. The actual hw is deduced from cable->hw. - The extra rules take the cable_lock to protect against the race. Fixes: b1c73fc8e697 ("ALSA: snd-aloop: Fix hw_params restrictions and checking") Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-17ALSA: aloop: Fix inconsistent format due to incomplete ruleTakashi Iwai
commit b088b53e20c7d09b5ab84c5688e609f478e5c417 upstream. The extra hw constraint rule for the formats the aloop driver introduced has a slight flaw, where it doesn't return a positive value when the mask got changed. It came from the fact that it's basically a copy&paste from snd_hw_constraint_mask64(). The original code is supposed to be a single-shot and it modifies the mask bits only once and never after, while what we need for aloop is the dynamic hw rule that limits the mask bits. This difference results in the inconsistent state, as the hw_refine doesn't apply the dependencies fully. The worse and surprisingly result is that it causes a crash in OSS emulation when multiple full-duplex reads/writes are performed concurrently (I leave why it triggers Oops to readers as a homework). For fixing this, replace a few open-codes with the standard snd_mask_*() macros. Reported-by: syzbot+3902b5220e8ca27889ca@syzkaller.appspotmail.com Fixes: b1c73fc8e697 ("ALSA: snd-aloop: Fix hw_params restrictions and checking") Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-17ALSA: aloop: Release cable upon open error pathTakashi Iwai
commit 9685347aa0a5c2869058ca6ab79fd8e93084a67f upstream. The aloop runtime object and its assignment in the cable are left even when opening a substream fails. This doesn't mean any memory leak, but it still keeps the invalid pointer that may be referred by the another side of the cable spontaneously, which is a potential Oops cause. Clean up the cable assignment and the empty cable upon the error path properly. Fixes: 597603d615d2 ("ALSA: introduce the snd-aloop module for the PCM loopback") Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-21ALSA: vx: Fix possible transfer overflowTakashi Iwai
[ Upstream commit 874e1f6fad9a5184b67f4cee37c1335cd2cc5677 ] The pseudo DMA transfer codes in VX222 and VX-pocket driver have a slight bug where they check the buffer boundary wrongly, and may overflow. Also, the zero sample count might be handled badly for the playback (although it shouldn't happen in theory). This patch addresses these issues. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=141541 Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-21ALSA: vx: Don't try to update capture stream before runningTakashi Iwai
[ Upstream commit ed3c177d960bb5881b945ca6f784868126bb90db ] The update of stream costs significantly, and we should avoid it unless the stream really has started. Check pipe->running flag instead of pipe->prepared. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-07-27ALSA: dummy: Fix a use-after-free at closingTakashi Iwai
commit d5dbbe6569481bf12dcbe3e12cff72c5f78d272c upstream. syzkaller fuzzer spotted a potential use-after-free case in snd-dummy driver when hrtimer is used as backend: > ================================================================== > BUG: KASAN: use-after-free in rb_erase+0x1b17/0x2010 at addr ffff88005e5b6f68 > Read of size 8 by task syz-executor/8984 > ============================================================================= > BUG kmalloc-192 (Not tainted): kasan: bad access detected > ----------------------------------------------------------------------------- > > Disabling lock debugging due to kernel taint > INFO: Allocated in 0xbbbbbbbbbbbbbbbb age=18446705582212484632 > .... > [< none >] dummy_hrtimer_create+0x49/0x1a0 sound/drivers/dummy.c:464 > .... > INFO: Freed in 0xfffd8e09 age=18446705496313138713 cpu=2164287125 pid=-1 > [< none >] dummy_hrtimer_free+0x68/0x80 sound/drivers/dummy.c:481 > .... > Call Trace: > [<ffffffff8179e59e>] __asan_report_load8_noabort+0x3e/0x40 mm/kasan/report.c:333 > [< inline >] rb_set_parent include/linux/rbtree_augmented.h:111 > [< inline >] __rb_erase_augmented include/linux/rbtree_augmented.h:218 > [<ffffffff82ca5787>] rb_erase+0x1b17/0x2010 lib/rbtree.c:427 > [<ffffffff82cb02e8>] timerqueue_del+0x78/0x170 lib/timerqueue.c:86 > [<ffffffff814d0c80>] __remove_hrtimer+0x90/0x220 kernel/time/hrtimer.c:903 > [< inline >] remove_hrtimer kernel/time/hrtimer.c:945 > [<ffffffff814d23da>] hrtimer_try_to_cancel+0x22a/0x570 kernel/time/hrtimer.c:1046 > [<ffffffff814d2742>] hrtimer_cancel+0x22/0x40 kernel/time/hrtimer.c:1066 > [<ffffffff85420531>] dummy_hrtimer_stop+0x91/0xb0 sound/drivers/dummy.c:417 > [<ffffffff854228bf>] dummy_pcm_trigger+0x17f/0x1e0 sound/drivers/dummy.c:507 > [<ffffffff85392170>] snd_pcm_do_stop+0x160/0x1b0 sound/core/pcm_native.c:1106 > [<ffffffff85391b26>] snd_pcm_action_single+0x76/0x120 sound/core/pcm_native.c:956 > [<ffffffff85391e01>] snd_pcm_action+0x231/0x290 sound/core/pcm_native.c:974 > [< inline >] snd_pcm_stop sound/core/pcm_native.c:1139 > [<ffffffff8539754d>] snd_pcm_drop+0x12d/0x1d0 sound/core/pcm_native.c:1784 > [<ffffffff8539d3be>] snd_pcm_common_ioctl1+0xfae/0x2150 sound/core/pcm_native.c:2805 > [<ffffffff8539ee91>] snd_pcm_capture_ioctl1+0x2a1/0x5e0 sound/core/pcm_native.c:2976 > [<ffffffff8539f2ec>] snd_pcm_kernel_ioctl+0x11c/0x160 sound/core/pcm_native.c:3020 > [<ffffffff853d9a44>] snd_pcm_oss_sync+0x3a4/0xa30 sound/core/oss/pcm_oss.c:1693 > [<ffffffff853da27d>] snd_pcm_oss_release+0x1ad/0x280 sound/core/oss/pcm_oss.c:2483 > ..... A workaround is to call hrtimer_cancel() in dummy_hrtimer_sync() which is called certainly before other blocking ops. Reported-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-17ALSA: dummy: Implement timer backend switching more safelyTakashi Iwai
commit ddce57a6f0a2d8d1bfacfa77f06043bc760403c2 upstream. Currently the selected timer backend is referred at any moment from the running PCM callbacks. When the backend is switched, it's possible to lead to inconsistency from the running backend. This was pointed by syzkaller fuzzer, and the commit [7ee96216c31a: ALSA: dummy: Disable switching timer backend via sysfs] disabled the dynamic switching for avoiding the crash. This patch improves the handling of timer backend switching. It keeps the reference to the selected backend during the whole operation of an opened stream so that it won't be changed by other streams. Together with this change, the hrtimer parameter is reenabled as writable now. NOTE: this patch also turned out to fix the still remaining race. Namely, ops was still replaced dynamically at dummy_pcm_open: static int dummy_pcm_open(struct snd_pcm_substream *substream) { .... dummy->timer_ops = &dummy_systimer_ops; if (hrtimer) dummy->timer_ops = &dummy_hrtimer_ops; Since dummy->timer_ops is common among all streams, and when the replacement happens during accesses of other streams, it may lead to a crash. This was actually triggered by syzkaller fuzzer and KASAN. This patch rewrites the code not to use the ops shared by all streams any longer, too. BugLink: http://lkml.kernel.org/r/CACT4Y+aZ+xisrpuM6cOXbL21DuM0yVxPYXf4cD4Md9uw0C3dBQ@mail.gmail.com Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-17ALSA: dummy: Disable switching timer backend via sysfsTakashi Iwai
commit 7ee96216c31aabe1eb42fb91ff50dae9fcd014b2 upstream. ALSA dummy driver can switch the timer backend between system timer and hrtimer via its hrtimer module option. This can be also switched dynamically via sysfs, but it may lead to a memory corruption when switching is done while a PCM stream is running; the stream instance for the newly switched timer method tries to access the memory that was allocated by another timer method although the sizes differ. As the simplest fix, this patch just disables the switch via sysfs by dropping the writable bit. BugLink: http://lkml.kernel.org/r/CACT4Y+ZGEeEBntHW5WHn2GoeE0G_kRrCmUh6=dWyy-wfzvuJLg@mail.gmail.com Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-25Merge tag 'sound-4.2-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "It was a busy development cycle at this time, as you can see a wide range of changes in diffstat. There are no big changes but many refactoring and improvements. Here we go some highlights: ALSA core: - Procfs codes were cleaned up to use seq_file - Procfs can be opt out via Kconfig (only for EXPERT) - Two types of jack API were unified finally; now both kctl and input jack devs are handled via a single function call. HD-audio: - Continued code restructuring for the future ASoC driver; now HDA controller driver is split to a core helper module. - Preliminary codes for Skylake audio support in HDA core. - Proper i915 gfx power well management for SKL & co - Enabled runtime PM as default for Intel HDMI/DP codecs - Newer Tegra chip supports - More quirks for Dell headsets, Alienware (with CA0132), etc. - A couple of DRM ELD helper API functions ASoC: - Support for loading ASoC topology maps from firmware, intended to be used to allow self-describing DSP firmware images to be built which can map controls added by the DSP to userspace without the kernel needing to know about individual DSP firmwares - Lots of refactoring to avoid direct access to snd_soc_codec where it's not needed supporting future refactoring - Big refactoring, cleanup and enhancement for the Wolfson ADSP driver - Cleanup series for TI TAS2552 and R-CAR drivers - Fixes and improvements on RT56xx codecs - Support for TI TAS571x power amplifiers - Support for Qualcomm APQ8016 and ZTE ZX296702 SoCs - Support for x86 systems with RT5650 and Qualcomm Storm - Support for Mediatek AFE (Audio Front End) unit - Other various small fixes to ASoC codec drivers Firewire: - Enhanced to allow non-blocking streams to use timestamp synchronization - Improve support for DM1500 and BeBoBv3 Misc: - Cleanup of old pci API functions over all PCI sound drivers - Fix long-standing regression of the old powermac i2c setup" * tag 'sound-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (533 commits) ALSA: pcm: Fix pcm_class sysfs output ALSA: hda-beep: Update authors dead email address ASoC: wm_adsp: Move DSP Rate controls into the codec ASoC: wm8995: Fix setting sysclk for WM8995_SYSCLK_MCLK2 case ALSA: hda: provide default bus io ops extended hdac ALSA: hda: add hda link cleanup routine ALSA: hda: add hdac_ext stream creation and cleanup routines ASoC: rsrc-card: remove unused ret ALSA: HDAC: move SND_HDA_PREALLOC_SIZE to core ASoC: mediatek: Add machine driver for rt5650 rt5676 codec ASoC: mediatek: Add machine driver for MAX98090 codec ASoC: mediatek: Add AFE platform driver ASoC: rsnd: remove io from rsnd_mod ASoC: rsnd: move rsnd_mod_is_working() to rsnd_io_is_working() ASoC: rsnd: don't use rsnd_mod_to_io() on snd_kcontrol ASoC: rsnd: don't use rsnd_mod_to_io() on rsnd_src_xxx() ASoC: rsnd: don't use rsnd_mod_to_io() on rsnd_ssi_xxx() ASoC: rsnd: don't use rsnd_mod_to_io() on rsnd_dma_xxx() ASoC: rsnd: don't use rsnd_mod_to_io() on rsnd_get_adinr() ASoC: rsnd: add common interrupt handler for SSI/SRC/DMA ...
2015-05-29ALSA: opl4: Fix / cleanup ifdef CONFIG_PROC_FSTakashi Iwai
Some are replaced with the new ifdef CONFIG_SND_PROC_FS. Some are removed by building opl4_proc.o conditionally. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29ALSA: dummy: Replace CONFIG_PROC_FS with CONFIG_SND_PROC_FSTakashi Iwai
Although there shouldn't be a problem in practice (the compiler should handle well), it's better to follow to the new Kconfig. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29ALSA: aloop: Drop unnecessary ifdef CONFIG_PROC_FSTakashi Iwai
Since the compiler can optimize away the unused code, we can reduce the messy ifdef. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-26ALSA: dummy: make local data staticTakashi Iwai
Add missing prefix to make some local data static. Spotted by sparse: sound/drivers/dummy.c:159:20: warning: symbol 'model_emu10k1' was not declared. Should it be static? sound/drivers/dummy.c:165:20: warning: symbol 'model_rme9652' was not declared. Should it be static? .... Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-12ALSA: drivers: pcsp: Fix printout of resolutionThomas Gleixner
The recent conversion of the hrtimer resolution failed to convert the printk format from %li to %u. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-04-22sound: Use hrtimer_resolution instead of hrtimer_get_res()Thomas Gleixner
No point in converting a timespec now that the value is directly accessible. Get rid of the null check while at it. Resolution is guaranteed to be > 0. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Takashi Iwai <tiwai@suse.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: alsa-devel@alsa-project.org Link: http://lkml.kernel.org/r/20150414203500.799133359@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-03-09Merge branch 'for-linus' into for-nextTakashi Iwai
Merging the HD-audio fixes back to base devel branch for further working on it.
2015-03-06ALSA: opl3: small array underflowDan Carpenter
There is a missing lower bound check on "pitchbend" so it means we can read up to 6 elements before the start of the opl3_note_table[] array. Thanks to Clemens Ladisch for his help with this patch. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-02-12ALSA: seq: Define driver object in each driverTakashi Iwai
This patch moves the driver object initialization and allocation to each driver's module init/exit code like other normal drivers. The snd_seq_driver struct is now published in seq_device.h, and each driver is responsible to define it with proper driver attributes (name, probe and remove) with snd_seq_driver specific attributes as id and argsize fields. The helper functions snd_seq_driver_register(), snd_seq_driver_unregister() and module_snd_seq_driver() are used for simplifying codes. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-28ALSA: Include linux/uaccess.h and linux/bitopts.h instead of asm/*Takashi Iwai
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-28ALSA: Include linux/io.h instead of asm/io.hTakashi Iwai
Nowadays it's recommended. Replace all in a shot. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-19ALSA: serial-u16550: Use setup_timer() and mod_timer()Takashi Iwai
No functional change, refactoring with the standard helpers. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-19ALSA: opl3: Use setup_timer() and mod_timer()Takashi Iwai
No functional change, refactoring with the standard helpers. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-19ALSA: mtpav: Use setup_timer() and mod_timer()Takashi Iwai
No functional change, refactoring with the standard helpers. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-19ALSA: mpu401: Use setup_timer() and mod_timer()Takashi Iwai
No functional change, refactoring with the standard helpers. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-19ALSA: aloop: Use setup_timer() and mod_timer()Takashi Iwai
No functional change, refactoring with the standard helpers. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-19ALSA: dummy: use setup_timer and mod_timerRoman Kollar
Use setup_timer and mod_timer instead of structure assignments as it is the preferred way to setup and set the timer. Signed-off-by: Roman Kollar <rkollar@mail.muni.cz> Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-04ALSA: Deletion of checks before the function call "iounmap"Markus Elfring
The iounmap() function performs also input parameter validation. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02ALSA: ml403-ac97cr: Remove always NULL parameterLars-Peter Clausen
snd_ml403_ac97cr_pcm() takes a pointer to a pointer of a PCM where if this parameter is provided the newly allocated PCM is stored. All callers pass NULL though, so remove the parameter. This makes the code a bit cleaner and shorter. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-14Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
2014-11-30ALSA: virmidi: Fix wrong error checkTakashi Iwai
While rewriting the code in the previous commit [316638a5030a: ALSA: virmidi: fixed code style issues], the error check was wrongly converted. This resulted an Oops. Fixes: 316638a5030a ('ALSA: virmidi: fixed code style issues') Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-11-29ALSA: virmidi: fixed code style issuesKyle Chamberlin
Fixed some minor code style issues and also removed some assignments inside of if conditionals. Signed-off-by: Kyle Chamberlin <kylechamberlin@project20million.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-11-11ALSA: vx: Fix missing kerneldoc parameter descriptionsTakashi Iwai
The file isn't processed, but it's not bad to fix beforehand. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-10-21ALSA: vx: Use snd_ctl_elem_info()Takashi Iwai
... and reduce the open codes. Also add missing const to text arrays. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-10-21ALSA: mts64: Use snd_ctl_elem_info()Takashi Iwai
... and reduce the open codes. Also add missing const to the text array. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-10-20ALSA: drivers: pcsp: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20ALSA: drivers: mpu401: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20ALSA: drivers: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-09-15ALSA: vx: Use nonatomic PCM opsTakashi Iwai
Rewrite VXpocket and VX222 drivers to use the new PCM nonatomic ops. The former irq tasklet is replaced with a threaded irq handler, and the tasklet for the PCM delayed start is simply merged into the normal PCM trigger, as well as the replacement of spinlock with mutex. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-02-12ALSA: drivers: Convert to snd_card_new() with a device pointerTakashi Iwai
Also remove superfluous snd_card_set_dev() calls. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-02-12ALSA: Drop unused name argument in snd_register_oss_device()Takashi Iwai
The last argument, name, of snd_oss_register_device() is nowhere referred in the function in the current code. Let's drop it. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-02-10ALSA: Replace with IS_ENABLED()Takashi Iwai
Replace the lengthy #if defined(XXX) || defined(XXX_MODULE) with the new IS_ENABLED() macro. The patch still doesn't cover all ifdefs. For example, the dependency on CONFIG_GAMEPORT is still open-coded because this also has an extra dependency on MODULE. Similarly, an open-coded ifdef in pcm_oss.c and some sequencer-related stuff are left untouched. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-02-07ALSA: pcsp: Include appropriate header file in pcsp/pcsp_input.cRashika Kheria
Include appropriate header file in drivers/pcsp/pcsp_input.c because it defines function whose prototype definitions are present in drivers/pcsp/pcsp_input.h. This eliminates the following warning in drivers/pcsp/pcsp_input.c: sound/drivers/pcsp/pcsp_input.c:42:6: warning: no previous prototype for ‘pcspkr_stop_sound’ [-Wmissing-prototypes] sound/drivers/pcsp/pcsp_input.c:80:5: warning: no previous prototype for ‘pcspkr_input_init’ [-Wmissing-prototypes] sound/drivers/pcsp/pcsp_input.c:110:5: warning: no previous prototype for ‘pcspkr_input_remove’ [-Wmissing-prototypes] Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-11-14ALSA: pcsp: Fix the order of input device unregistrationTakashi Iwai
The current code may access to the already freed object. The input device must be accessed and unregistered before freeing the top level sound object. Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-29ALSA: pcsp: Fix initialization with nopcm=1Takashi Iwai
When nopcm=1 is set, some initializations based on hrtimer resolution might be bogus because the driver checks the resolution only when nopcm=0. Simply get the resolution always at first for fixing the bug. Spotted by coverity CID 139740. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-29ALSA: opl3: Fix possible negative array index accessTakashi Iwai
Spotted by coverity CID 115196. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-07-21ALSA: replace strict_strto*() with kstrto*()Jingoo Han
The usage of strict_strto*() is not preferred, because strict_strto*() is obsolete. Thus, kstrto*() should be used. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-06-21ALSA: vx_core: off by one in vx_read_status()Dan Carpenter
This code is older than git, and I haven't tested it, but if size == SIZE_MAX_STATUS then we would write one space past the end of the rmh->Stat[] array. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-05-29ALSA: Remove the rest of *_set_drvdata(NULL) callsTakashi Iwai
A few calls are still left in parport drivers after this commit, which I'm not quite sure yet. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-05-23ALSA: virmidi: Remove redundant platform_set_drvdata()Sachin Kamat
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no driver is bound) removes the need to set driver data field to NULL. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-05-23ALSA: serial-u16550: Remove redundant platform_set_drvdata()Sachin Kamat
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no driver is bound) removes the need to set driver data field to NULL. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
generated by cgit v1.2.3 (git 2.0.4) at 2024-12-28 19:26:44 +0000