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2021-03-30ALSA: control - introduce snd_ctl_notify_one() helperJaroslav Kysela
This helper is required for the following generic LED mute patch. The helper also simplifies some other functions. Signed-off-by: Jaroslav Kysela <perex@perex.cz> Link: https://lore.kernel.org/r/20210317172945.842280-2-perex@perex.cz Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-30ALSA: core: remove redundant spin_lock pair in snd_card_disconnectJia Zhou
modification in commit 2a3f7221acdd ("ALSA: core: Fix card races between register and disconnect") resulting in this problem. Fixes: 2a3f7221acdd ("ALSA: core: Fix card races between register and disconnect") Signed-off-by: Jia Zhou <zhou.jia2@zte.com.cn> Signed-off-by: Yi Wang <wang.yi59@zte.com.cn> Link: https://lore.kernel.org/r/1616989007-34429-1-git-send-email-wang.yi59@zte.com.cn Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-26ALSA: pcm: Fix couple of typosBhaskar Chowdhury
s/unconditonally/unconditionally/ s/succesful/successful/ Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Link: https://lore.kernel.org/r/20210326064211.6509-1-unixbhaskar@gmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-22ALSA: core: avoid -Wempty-body warningsArnd Bergmann
Building with 'make W=1' shows some warnings about empty function-style macros: sound/core/pcm_memory.c: In function 'preallocate_pages': sound/core/pcm_memory.c:236:49: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body] 236 | preallocate_info_init(substream); sound/core/seq_device.c: In function 'snd_seq_device_dev_register': sound/core/seq_device.c:163:41: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body] 163 | queue_autoload_drivers(); Change them to empty inline functions, which are more robust here. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20210322103128.547199-1-arnd@kernel.org Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-19ALSA: pcm: Add debug print on memory allocation failureAmadeusz Sławiński
Add debug prints after calls of do_alloc_pages. One simplification would be to move print into do_alloc_pages, however it would cause spam in logs, as preallocate_pcm_pages loops over do_alloc_pages trying lower values in case of failures. Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com> Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com> Link: https://lore.kernel.org/r/20210318160618.2504068-2-amadeuszx.slawinski@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-17Merge tag 'asoc-v5.12' of ↵Takashi Iwai
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Updates for v5.12 Another quiet release in terms of features, though several of the drivers got quite a bit of work and there were a lot of general changes resulting from Morimoto-san's ongoing cleanup work. - As ever, lots of hard work by Morimoto-san cleaning up the code and making it more consistent. - Many improvements in the Intel drivers including a wide range of quirks and bug fixes. - A KUnit testsuite for the topology code. - Support for Ingenic JZ4760(B), Intel AlderLake-P, DT configured nVidia cards, Qualcomm lpass-rx-macro and lpass-tx-macro - Removal of obsolete SIRF prima/atlas, Txx9 and ZTE zx drivers.
2021-02-17Merge remote-tracking branch 'asoc/for-5.12' into asoc-linusMark Brown
2021-02-10ALSA: core - add missing compress device type to /proc/asound/devicesJaroslav Kysela
Signed-off-by: Jaroslav Kysela <perex@perex.cz> Acked-by: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20210210083713.1034201-1-perex@perex.cz Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-08ALSA: pcm: Use for_each_pcm_substream() macroTakashi Iwai
There are a few places doing the same loop iterating all PCM substreams belonging to the PCM object. Introduce a local helper macro, for_each_pcm_substream(), to simplify the code. Link: https://lore.kernel.org/r/20210206203656.15959-5-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-08ALSA: pcm: Don't call sync_stop if it hasn't been stoppedTakashi Iwai
The PCM stop operation sets the stop_operating flag for indicating the sync_stop post-process. This flag is, however, set unconditionally even if the PCM trigger weren't issued. This may lead to inconsistency in the driver side. Correct the code to set stop_operating flag only after the trigger STOP is actually called. Fixes: 1e850beea278 ("ALSA: pcm: Add the support for sync-stop operation") Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20210206203656.15959-4-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-08ALSA: pcm: Assure sync with the pending stop operation at suspendTakashi Iwai
The current PCM code calls the sync_stop at the resume action due to the analogy to the PCM prepare call pattern. But, it makes little sense, as the sync should have been done rather at the suspend time, not at the resume time. This patch corrects the sync_stop call at suspend/resume to assure the sync before finishing the suspend. Fixes: 1e850beea278 ("ALSA: pcm: Add the support for sync-stop operation") Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20210206203656.15959-3-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-08ALSA: pcm: Call sync_stop at disconnectionTakashi Iwai
The PCM core should perform the sync for the pending stop operations at disconnection. Otherwise it may lead to unexpected access. Currently the old user of sync_stop, USB-audio driver, has its own sync, so this isn't needed, but it's better to guarantee the sync in the PCM core level. This patch adds the missing sync_stop call at PCM disconnection callback. It also assures the IRQ sync if it's specified in the card. snd_pcm_sync_stop() is slightly modified to be called also for any PCM substream object now. Fixes: 1e850beea278 ("ALSA: pcm: Add the support for sync-stop operation") Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20210206203656.15959-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-05ASoC: dmaengine_pcm: add peripheral configurationShengjiu Wang
The commit e7bbb7acabf4 ("dmaengine: add peripheral configuration") adds peripheral configuration for dma_slave_config. This configuration is useful for some audio peripherals, for example, the peripheral supports multi fifos, we can let the DMA know which fifos are selected. So also add this configuration for snd_dmaengine_dai_dma_data. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Link: https://lore.kernel.org/r/1612509985-11063-1-git-send-email-shengjiu.wang@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-02-02ALSA: core: Fix the debugfs removal at snd_card_free()Takashi Iwai
The commit 2d670ea2bd53 ("ALSA: jack: implement software jack injection via debugfs") introduced a debugfs root for each sound card object. The debugfs entry gets removed at the card removal, too, but it turned out that debugfs_remove() is called at a wrong place; it's after the card object gets freed, hence it leads to use-after-free. Fix it by moving the debugfs_remove() at the right place, the destructor of the card device. Fixes: 2d670ea2bd53 ("ALSA: jack: implement software jack injection via debugfs") Reported-and-tested-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://lore.kernel.org/r/161228343605.1150.8862281636043446562@build.alporthouse.com Link: https://lore.kernel.org/r/20210202225629.1965-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-02Merge branch 'for-linus' into for-nextTakashi Iwai
Back-merge the 5.11 devel branch for further patching. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-02ALSA: jack: implement software jack injection via debugfsHui Wang
This change adds audio jack injection feature through debugfs, with this feature, we could validate alsa userspace changes by injecting plugin or plugout events to the non-phantom audio jacks. With this change, the sound core will build the folders $debugfs_mount_dir/sound/cardN if SND_DEBUG and DEBUG_FS are enabled. And if users also enable the SND_JACK_INJECTION_DEBUG, the jack injection nodes will be built in the folder cardN like below: $tree $debugfs_mount_dir/sound $debugfs_mount_dir/sound ├── card0 │   ├── HDMI_DP_pcm_10_Jack │   │   ├── jackin_inject │   │   ├── kctl_id │   │   ├── mask_bits │   │   ├── status │   │   ├── sw_inject_enable │   │   └── type ... │   └── HDMI_DP_pcm_9_Jack │   ├── jackin_inject │   ├── kctl_id │   ├── mask_bits │   ├── status │   ├── sw_inject_enable │   └── type └── card1 ├── HDMI_DP_pcm_5_Jack │   ├── jackin_inject │   ├── kctl_id │   ├── mask_bits │   ├── status │   ├── sw_inject_enable │   └── type ... ├── Headphone_Jack │   ├── jackin_inject │   ├── kctl_id │   ├── mask_bits │   ├── status │   ├── sw_inject_enable │   └── type └── Headset_Mic_Jack ├── jackin_inject ├── kctl_id ├── mask_bits ├── status ├── sw_inject_enable └── type The nodes kctl_id, mask_bits, status and type are read-only, users could check jack or jack_kctl's information through them. The nodes sw_inject_enable and jackin_inject are directly used for injection. The sw_inject_enable is read-write, users could check if software injection is enabled or not on this jack, and users could echo 1 or 0 to enable or disable software injection on this jack. Once the injection is enabled, the jack will not change by hardware events anymore, once the injection is disabled, the jack will restore the last reported hardware events to the jack. The jackin_inject is write-only, if the injection is enabled, users could echo 1 or 0 to this node to inject plugin or plugout events to this jack. For the detailed usage information on these nodes, please refer to Documentation/sound/designs/jack-injection.rst. Reviewed-by: Takashi Iwai <tiwai@suse.de> Reviewed-by: Jaroslav Kysela <perex@perex.cz> Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Signed-off-by: Hui Wang <hui.wang@canonical.com> Link: https://lore.kernel.org/r/20210127085639.74954-2-hui.wang@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-01-23ALSA: pcm: One more dependency for hw constraintsTakashi Iwai
The fix for a long-standing USB-audio bug required one more dependency variable to be added to the hw constraints. Unfortunately I didn't realize at debugging that the new addition may result in the overflow of the dependency array of each snd_pcm_hw_rule (up to three plus a sentinel), because USB-audio driver adds one more dependency only for a certain device and bus, hence it works as is for many devices. But in a bad case, a simple open always results in -EINVAL (with kernel WARNING if CONFIG_SND_DEBUG is set) no matter what is passed. Since the dependencies are real and unavoidable (USB-audio restricts the hw_params per looping over the format/rate/channels combos), the only good solution seems to raise the bar for one more dependency for snd_pcm_hw_rule -- so does this patch: now the hw constraint dependencies can be up to four. Fixes: 506c203cc3de ("ALSA: usb-audio: Fix hw constraints dependencies") Reported-by: Jamie Heilman <jamie@audible.transient.net> Link: https://lore.kernel.org/r/20210123155730.22576-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-01-18Merge branch 'for-linus' into for-nextTakashi Iwai
Back-merge of 5.11 devel branch for more works on USB-audio. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-01-15ALSA: seq: oss: Fix missing error check in snd_seq_oss_synth_make_info()Takashi Iwai
snd_seq_oss_synth_make_info() didn't check the error code from snd_seq_oss_midi_make_info(), and this leads to the call of strlcpy() with the uninitialized string as the source, which may lead to the access over the limit. Add the proper error check for avoiding the failure. Reported-by: syzbot+e42504ff21cff05a595f@syzkaller.appspotmail.com Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20210115093428.15882-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-01-08ALSA: Convert strlcpy to strscpy when return value is unusedJoe Perches
strlcpy is deprecated. see: Documentation/process/deprecated.rst Change the calls that do not use the strlcpy return value to the preferred strscpy. Done with cocci script: @@ expression e1, e2, e3; @@ - strlcpy( + strscpy( e1, e2, e3); This cocci script leaves the instances where the return value is used unchanged. After this patch, sound/ has 3 uses of strlcpy() that need to be manually inspected for conversion and changed one day. $ git grep -w strlcpy sound/ sound/usb/card.c: len = strlcpy(card->longname, s, sizeof(card->longname)); sound/usb/mixer.c: return strlcpy(buf, p->name, buflen); sound/usb/mixer.c: return strlcpy(buf, p->names[index], buflen); Miscellenea: o Remove trailing whitespace in conversion of sound/core/hwdep.c Link: https://lore.kernel.org/lkml/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/22b393d1790bb268769d0bab7bacf0866dcb0c14.camel@perches.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-01-07Merge branch 'for-linus' into for-nextTakashi Iwai
Back-merge of 5.11-devel branch for syncing the result changes. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-25ALSA: oss: Use DIV_ROUND_CLOSEST() instead of open-coding itLars-Peter Clausen
Use DIV_ROUND_CLOSEST() instead of open-coding it. This documents intent and makes it more clear what is going on for the casual reviewer. Generated using the following the Coccinelle semantic patch. // <smpl> @@ expression x, y; @@ -((x) + ((y) / 2)) / (y) +DIV_ROUND_CLOSEST(x, y) // </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Link: https://lore.kernel.org/r/20201223172229.781-13-lars@metafoo.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-25ALSA: core: Use DIV_ROUND_UP() instead of open-coding itLars-Peter Clausen
Use DIV_ROUND_UP() instead of open-coding it. This documents intent and makes it more clear what is going on for the casual reviewer. Generated using the following the Coccinelle semantic patch. // <smpl> @@ expression x, y; @@ -(((x) + (y) - 1) / (y)) +DIV_ROUND_UP(x, y) // </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Link: https://lore.kernel.org/r/20201223172229.781-1-lars@metafoo.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-23Merge tag 'sound-fix-5.11-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "A collection of small fixes that came up recently for 5.11. The majority of fixes are usual HD-audio and USB-audio quirks, with a few PCM core fixes for addressing the information leak and yet more UBSAN fixes in the core side" * tag 'sound-fix-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA/hda: apply jack fixup for the Acer Veriton N4640G/N6640G/N2510G ALSA: hda/realtek: Apply jack fixup for Quanta NL3 ALSA: usb-audio: Add implicit feeback support for the BOSS GT-1 ALSA: usb-audio: Add alias entry for ASUS PRIME TRX40 PRO-S ALSA: core: Remove redundant comments ALSA: hda/realtek: Add quirk for MSI-GP73 ALSA: pcm: oss: Fix a few more UBSAN fixes ALSA: pcm: Clear the full allocated memory at hw_params ALSA: memalloc: Align buffer allocations in page size ALSA: usb-audio: Disable sample read check if firmware doesn't give back ALSA: pcm: Remove snd_pcm_lib_preallocate_dma_free() ALSA: usb-audio: Add VID to support native DSD reproduction on FiiO devices ALSA: core: memalloc: add page alignment for iram ALSA: hda/realtek - Supported Dell fixed type headset ALSA: hda/realtek: Remove dummy lineout on Acer TravelMate P648/P658
2020-12-21ALSA: core: Remove redundant commentsYangHui
Remove redundant comments Signed-off-by: YangHui <yanghui.def@gmail.com> Link: https://lore.kernel.org/r/1608531727-5433-1-git-send-email-yanghui.def@gmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-18ALSA: pcm: oss: Fix a few more UBSAN fixesTakashi Iwai
There are a few places that call round{up|down}_pow_of_two() with the value zero, and this causes undefined behavior warnings. Avoid calling those macros if such a nonsense value is passed; it's a minor optimization as well, as we handle it as either an error or a value to be skipped, instead. Reported-by: syzbot+33ef0b6639a8d2d42b4c@syzkaller.appspotmail.com Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20201218161730.26596-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-18ALSA: pcm: Clear the full allocated memory at hw_paramsTakashi Iwai
The PCM hw_params core function tries to clear up the PCM buffer before actually using for avoiding the information leak from the previous usages or the usage before a new allocation. It performs the memset() with runtime->dma_bytes, but this might still leave some remaining bytes untouched; namely, the PCM buffer size is aligned in page size for mmap, hence runtime->dma_bytes doesn't necessarily cover all PCM buffer pages, and the remaining bytes are exposed via mmap. This patch changes the memory clearance to cover the all buffer pages if the stream is supposed to be mmap-ready (that guarantees that the buffer size is aligned in page size). Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Link: https://lore.kernel.org/r/20201218145625.2045-3-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-18ALSA: memalloc: Align buffer allocations in page sizeTakashi Iwai
Currently the standard memory allocator (snd_dma_malloc_pages*()) passes the byte size to allocate as is. Most of the backends allocates real pages, hence the actual allocations are aligned in page size. However, the genalloc doesn't seem assuring the size alignment, hence it may result in the access outside the buffer when the whole memory pages are exposed via mmap. For avoiding such inconsistencies, this patch makes the allocation size always to be aligned in page size. Note that, after this change, snd_dma_buffer.bytes field contains the aligned size, not the originally requested size. This value is also used for releasing the pages in return. Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Link: https://lore.kernel.org/r/20201218145625.2045-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-18ALSA: pcm: Remove snd_pcm_lib_preallocate_dma_free()Lars-Peter Clausen
Since commit d4cfb30fce03 ("ALSA: pcm: Set per-card upper limit of PCM buffer allocations") snd_pcm_lib_preallocate_dma_free() is a single line function that has one caller, which is another single line function. Clean this up a bit and remove snd_pcm_lib_preallocate_dma_free() and directly call do_free_pages() from snd_pcm_lib_preallocate_free(). This is a bit less boilerplate. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Link: https://lore.kernel.org/r/20201218153400.18394-1-lars@metafoo.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-17ALSA: core: memalloc: add page alignment for iramRobin Gong
Since mmap for userspace is based on page alignment, add page alignment for iram alloc from pool, otherwise, some good data located in the same page of dmab->area maybe touched wrongly by userspace like pulseaudio. Signed-off-by: Robin Gong <yibin.gong@nxp.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/1608221747-3474-1-git-send-email-yibin.gong@nxp.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-15Merge tag 'sound-5.11-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "Lots of changes (slightly more code increase than usual) at this time, while most of code changes are ASoC driver-specific. Here are some highlights: Core: - The new auxiliary bus implementation for Intel DSP, which will be used by other drivers as well - Lots of ASoC core cleanups and refactoring - UBSAN and KCSAN fixes in rawmidi, sequencer and a few others - Compress-offload API enhancement for the pause during draining HD- and USB-audio: - Enhancements of the USB-audio implicit feedback support, including better full-duplex operations - Continued CA0132 improvements and fixes - A few new quirk entries, HDMI audio fixes ASoC: - Support for boot time selection of Intel DSP firmware, which should help distros/users testing new stuff more easily; the kconfig was moved to boot time option, too - Some basic DPCM support in audio graph card - Removal of old pre-DT Freescale drivers - Support for Allwinner H6 I2S, Analog Devices ADAU1372, Intel Alderlake-S, GMediatek MT8192, NXP i.MX HDMI and XCVR, Realtek RT715, Qualcomm SM8250 and simple GPIO based muxes" * tag 'sound-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (445 commits) ALSA: pcm: oss: Fix potential out-of-bounds shift ALSA: usb-audio: Fix potential out-of-bounds shift ALSA: hda/ca0132 - Add ZxR surround DAC setup. ALSA: hda/ca0132 - Add 8051 PLL write helper functions. ALSA: hda/hdmi: packet buffer index must be set before reading value ASoC: SOF: imx: update kernel-doc description ASoC: mediatek: mt8183: delete some unreachable code ASoC: mediatek: mt8183: add PM ops to machine drivers ASoC: topology: Fix wrong size check ASoC: topology: Add missing size check ASoC: SOF: Intel: hda: fix the condition passed to sof_dev_dbg_or_err ASoC: SOF: modify the SOF_DBG flags ASoC: SOF: Intel: hda: remove duplicated status dump ASoC: rt1015p: delay 300ms after SDB pulling high for calibration ASoC: rt1015p: move SDB control from trigger to DAPM ASoC: wm_adsp: remove "ctl" from list on error in wm_adsp_create_control() ALSA: usb-audio: Fix control 'access overflow' errors from chmap ALSA: hda/hdmi: always print pin NIDs as hexadecimal ALSA: hda/realtek - Add supported for more Lenovo ALC285 Headset Button ALSA: hda/ca0132 - Remove now unnecessary DSP setup functions. ...
2020-12-15ALSA: pcm: use krealloc_array()Bartosz Golaszewski
Use the helper that checks for overflows internally instead of manually calculating the size of the new array. Link: https://lkml.kernel.org/r/20201109110654.12547-4-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Christian Knig <christian.koenig@amd.com> Cc: Christoph Lameter <cl@linux.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: David Airlie <airlied@linux.ie> Cc: David Rientjes <rientjes@google.com> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: James Morse <james.morse@arm.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Jason Wang <jasowang@redhat.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Maxime Ripard <mripard@kernel.org> Cc: "Michael S . Tsirkin" <mst@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Robert Richter <rric@kernel.org> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Takashi Iwai <tiwai@suse.com> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-14ALSA: pcm: oss: Fix potential out-of-bounds shiftTakashi Iwai
syzbot spotted a potential out-of-bounds shift in the PCM OSS layer where it calculates the buffer size with the arbitrary shift value given via an ioctl. Add a range check for avoiding the undefined behavior. As the value can be treated by a signed integer, the max shift should be 30. Reported-by: syzbot+df7dc146ebdd6435eea3@syzkaller.appspotmail.com Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20201209084552.17109-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-06ALSA: rawmidi: Access runtime->avail always in spinlockTakashi Iwai
The runtime->avail field may be accessed concurrently while some places refer to it without taking the runtime->lock spinlock, as detected by KCSAN. Usually this isn't a big problem, but for consistency and safety, we should take the spinlock at each place referencing this field. Reported-by: syzbot+a23a6f1215c84756577c@syzkaller.appspotmail.com Reported-by: syzbot+3d367d1df1d2b67f5c19@syzkaller.appspotmail.com Link: https://lore.kernel.org/r/20201206083527.21163-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-06ALSA: seq: Use bool for snd_seq_queue internal flagsTakashi Iwai
The snd_seq_queue struct contains various flags in the bit fields. Those are categorized to two different use cases, both of which are protected by different spinlocks. That implies that there are still potential risks of the bad operations for bit fields by concurrent accesses. For addressing the problem, this patch rearranges those flags to be a standard bool instead of a bit field. Reported-by: syzbot+63cbe31877bb80ef58f5@syzkaller.appspotmail.com Link: https://lore.kernel.org/r/20201206083456.21110-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-11-27ALSA: compress: allow pause and resume during drainingGyeongtaek Lee
With a stream with low bitrate, user can't pause or resume the stream near the end of the stream because current ALSA doesn't allow it. If the stream has very low bitrate enough to store whole stream into the buffer, user can't do anything except stop the stream and then restart it from the first because most of applications call draining after sending last frame to the kernel. If pause, resume are allowed during draining, user experience can be enhanced. To prevent malfunction in HW drivers which don't support pause during draining, pause during draining will only work if HW driver enable this feature explicitly by calling snd_compr_use_pause_in_draining(). Signed-off-by: Gyeongtaek Lee <gt82.lee@samsung.com> Acked-by: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/000101d6c3f0$89b312b0$9d193810$@samsung.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-11-24Merge branch 'topic/usb-audio-refactoring' into for-nextTakashi Iwai
Pull the USB audio improvement Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-11-13ALSA: ctl: fix error path at adding user-defined element setTakashi Sakamoto
When processing request to add/replace user-defined element set, check of given element identifier and decision of numeric identifier is done in "__snd_ctl_add_replace()" helper function. When the result of check is wrong, the helper function returns error code. The error code shall be returned to userspace application. Current implementation includes bug to return zero to userspace application regardless of the result. This commit fixes the bug. Cc: <stable@vger.kernel.org> Fixes: e1a7bfe38079 ("ALSA: control: Fix race between adding and removing a user element") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20201113092043.16148-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-11-04ALSA: seq: remove useless functionYu Hao
The function snd_seq_queue_client_termination() is only called from the function seq_free_client1(). The function seq_free_client1() calls the function snd_seq_queue_client_leave() and the function snd_seq_queue_client_termination() together. Because the function snd_seq_queue_client_leave() does all things, so the function snd_seq_queue_client_termination() is a useless function. Signed-off-by: Yu Hao <yuhaobehappy@gmail.com> Link: https://lore.kernel.org/r/20201103223335.21831-1-yuhaobehappy@gmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-10-26ALSA: fix kernel-doc markupsMauro Carvalho Chehab
Kernel-doc markups should use this format: identifier - description There is a common comment marked, instead, with kernel-doc notation. Some identifiers have different names between their prototypes and the kernel-doc markup. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/535182d6f55d7a7de293dda9676df68f5f60afc6.1603469755.git.mchehab+huawei@kernel.org Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-23ALSA: seq: oss: Avoid mutex lock for a long-time ioctlTakashi Iwai
Recently we applied a fix to cover the whole OSS sequencer ioctls with the mutex for dealing with the possible races. This works fine in general, but in theory, this may lead to unexpectedly long stall if an ioctl like SNDCTL_SEQ_SYNC is issued and an event with the far future timestamp was queued. For fixing such a potential stall, this patch changes the mutex lock applied conditionally excluding such an ioctl command. Also, change the mutex_lock() with the interruptible version for user to allow escaping from the big-hammer mutex. Fixes: 80982c7e834e ("ALSA: seq: oss: Serialize ioctls") Suggested-by: Pavel Machek <pavel@ucw.cz> Link: https://lore.kernel.org/r/20200922083856.28572-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-22ALSA: ctl: Workaround for lockdep warning wrt card->ctl_files_rwlockTakashi Iwai
The recent change in lockdep for read lock caused the deadlock warnings in ALSA control code which uses the read_lock() for notification and else while write_lock_irqsave() is used for adding and removing the list entry. Although a deadlock would practically never hit in a real usage (the addition and the deletion can't happen with the notification), it's better to fix the read_lock() usage in a semantically correct way. This patch replaces the read_lock() calls with read_lock_irqsave() version for avoiding a reported deadlock. The notification code path takes the irq disablement in anyway, and other code paths are very short execution, hence there shouldn't be any big performance hit by this change. Fixes: e918188611f0 ("locking: More accurate annotations for read_lock()") Reported-by: syzbot+561a74f84100162990b2@syzkaller.appspotmail.com Link: https://lore.kernel.org/r/20200922084953.29018-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-21ALSA: compat_ioctl: avoid compat_alloc_user_spaceArnd Bergmann
Using compat_alloc_user_space() tends to add complexity to the ioctl handling, so I am trying to remove it everywhere. The two callers in sound/core can rewritten to just call the same code that operates on a kernel pointer as the native handler. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200918095642.1446243-1-arnd@arndb.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-09ALSA: timer: Replace tasklet with workTakashi Iwai
The tasklet is an old API that should be deprecated, usually can be converted to another decent API. In ALSA core timer API, the callbacks can be offlined to a tasklet when a flag is set in the timer backend. It can be achieved gracefully with a work queued in the high-prio system workqueue. This patch replaces the usage of tasklet in ALSA timer API with a simple work. Currently the tasklet feature is used only in the system timer and hrtimer backends, so both are patched to use the new flag name SNDRV_TIMER_HW_WORK, too. Link: https://lore.kernel.org/r/20200903104131.21097-3-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-09Merge branch 'for-linus' into for-nextTakashi Iwai
Back-merge to apply the tasklet conversion patches that are based on the already applied tasklet API changes on 5.9-rc4. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-03ALSA: rawmidi: (cosmetic) align function parametersPierre-Louis Bossart
fix cppcheck: sound/core/rawmidi.c:1711:49: style:inconclusive: Function 'snd_rawmidi_free' argument 1 names different: declaration 'rawmidi' definition 'rmidi'. [funcArgNamesDifferent] Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200902212133.30964-16-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-03ALSA: core: init: use DECLARE_COMPLETION_ONSTACK() macroPierre-Louis Bossart
Follow recommendation in Documentation/scheduler/completion.rst and use macro to declare local 'struct completion' Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200902212133.30964-9-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-03ALSA: compress_offload: remove redundant initializationPierre-Louis Bossart
Fix cppcheck warning: sound/core/compress_offload.c:1044:6: style: Redundant initialization for 'ret'. The initialized value is overwritten before it is read. [redundantInitialization] ret = snd_register_device(SNDRV_DEVICE_TYPE_COMPRESS, ^ sound/core/compress_offload.c:1034:10: note: ret is initialized int ret = -EINVAL; ^ sound/core/compress_offload.c:1044:6: note: ret is overwritten ret = snd_register_device(SNDRV_DEVICE_TYPE_COMPRESS, ^ Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-by: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20200902212133.30964-8-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-03ALSA: compress_offload: dereference after checking for NULL pointerPierre-Louis Bossart
Fix cppcheck warning and only dereference once the initial checks are done: sound/core/compress_offload.c:516:38: warning: Either the condition '!stream' is redundant or there is possible null pointer dereference: stream. [nullPointerRedundantCheck] struct snd_compr_runtime *runtime = stream->runtime; ^ sound/core/compress_offload.c:518:17: note: Assuming that condition '!stream' is not redundant if (snd_BUG_ON(!(stream) || !(stream)->runtime)) ^ sound/core/compress_offload.c:516:38: note: Null pointer dereference struct snd_compr_runtime *runtime = stream->runtime; ^ Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-by: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20200902212133.30964-7-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-03ALSA: core: timer: clarify operator precedencePierre-Louis Bossart
fix cppcheck warning: sound/core/timer.c:1286:9: style: Clarify calculation precedence for '&' and '?'. [clarifyCalculation] ? "running" : "stopped"); ^ Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200902212133.30964-6-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
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