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2020-01-03ALSA: aoa: Constify snd_kcontrol_new itemsTakashi Iwai3-3/+3
Most of snd_kcontrol_new definitions are read-only and passed as-is. Let's declare them as const for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-33-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: mixer: oss: Constify snd_mixer_oss_assign_table definitionTakashi Iwai1-6/+8
The snd_mixer_oss_assign_table is read-only, and can it be declared as const. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-32-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: vx: Constify snd_vx_hardware and snd_vx_ops definitionsTakashi Iwai8-20/+22
Both snd_vx_hardware and snd_vx_ops are only referred without modification, hence they can be constified gracefully for further optimizations. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-31-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: seq: Constify struct snd_midi_opTakashi Iwai6-20/+28
Change the argument of snd_midi_process_event() to receive a const snd_midi_op pointer and its callers respectively. This allows further optimizations. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-30-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: info: Make snd_info_entry_ops as constTakashi Iwai8-10/+10
The reference to snd_info_entry_ops is rather read-only, so declare it as a const pointer. This allows a bit more optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-29-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: pci: Constify snd_ac97_bus_ops definitionsTakashi Iwai28-31/+31
Now snd_ac97_bus() takes the const ops pointer, so we can define the snd_ac97_bus_ops locally as const as well for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-28-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: drivers: Constify snd_ac97_bus_ops definitionsTakashi Iwai1-1/+1
Now snd_ac97_bus() takes the const ops pointer, so we can define the snd_ac97_bus_ops locally as const as well for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-27-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: atmel: Constify snd_ac97_bus_ops definitionsTakashi Iwai1-1/+1
Now snd_ac97_bus() takes the const ops pointer, so we can define the snd_ac97_bus_ops locally as const as well for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-26-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: arm: Constify snd_ac97_bus_ops definitionsTakashi Iwai2-2/+2
Now snd_ac97_bus() takes the const ops pointer, so we can define the snd_ac97_bus_ops locally as const as well for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-25-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: ac97: Constify snd_ac97_bus_ops definitionsTakashi Iwai1-1/+1
Now snd_ac97_bus() takes the const ops pointer, so we can define the snd_ac97_bus_ops locally as const as well for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-24-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: ac97: Treat snd_ac97_bus_ops as constTakashi Iwai3-4/+6
This is a preliminary patch to allow const for snd_ac97_bus_ops definitions in each driver's code. The ops reference is read-only, hence it can be declared as const for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-23-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: Constify snd_timer_hardware definitionsTakashi Iwai6-8/+8
Most of snd_timer_hardware definitions do simply copying to another struct as-is. Mark them as const for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-22-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: timer: Constify snd_timer_hardware definitionsTakashi Iwai2-2/+2
Most of snd_timer_hardware definitions do simply copying to another struct as-is. Mark them as const for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-21-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: docs: Constify snd_device_ops definitionsTakashi Iwai1-3/+3
Update the documentation for adding the const prefix to snd_device_ops definitions as well. Link: https://lore.kernel.org/r/20200103081714.9560-20-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: spi: Constify snd_device_ops definitionsTakashi Iwai1-1/+1
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-19-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: sh: Constify snd_device_ops definitionsTakashi Iwai1-1/+1
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-18-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: sparc: Constify snd_device_ops definitionsTakashi Iwai2-3/+3
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-17-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: ppc: Constify snd_device_ops definitionsTakashi Iwai1-1/+1
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-16-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: pcmcia: Constify snd_device_ops definitionsTakashi Iwai2-2/+2
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-15-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: parisc: Constify snd_device_ops definitionsTakashi Iwai1-1/+1
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-14-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: mips: Constify snd_device_ops definitionsTakashi Iwai2-2/+2
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-13-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: aoa: Constify snd_device_ops definitionsTakashi Iwai5-5/+5
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-12-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: usb: Constify snd_device_ops definitionsTakashi Iwai1-1/+1
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-11-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: pci: Constify snd_device_ops definitionsTakashi Iwai44-45/+45
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-10-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: hda: Constify snd_device_ops definitionsTakashi Iwai4-4/+4
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-9-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: isa: Constify snd_device_ops definitionsTakashi Iwai8-8/+8
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-8-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: i2c: Constify snd_device_ops definitionsTakashi Iwai4-4/+4
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-7-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: drivers: Constify snd_device_ops definitionsTakashi Iwai5-5/+5
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-6-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: core: Constify snd_device_ops definitionsTakashi Iwai8-9/+9
Now we may declare const for snd_device_ops definitions, so let's do it for optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-5-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: core: Treat snd_device_ops as constTakashi Iwai2-3/+3
This is a preliminary patch to allow const for snd_device_ops definitions in each driver's code. The ops reference is read-only, hence it can be declared as const for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-4-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: usb: Constify snd_pcm_hardware definitionsTakashi Iwai3-3/+3
Most of snd_pcm_hardware definitions are just copied to another object as-is, hence we can define them as const for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-3-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-03ALSA: pci: Constify snd_pcm_hardware definitionsTakashi Iwai17-23/+23
Most of snd_pcm_hardware definitions are just copied to another object as-is, hence we can define them as const for further optimization. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-01ALSA: hda: constify copied structureJulia Lawall1-1/+1
The azx_pcm_hw structure is only copied into another structure, so make it const. The opportunity for this change was found using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Link: https://lore.kernel.org/r/1577864614-5543-3-git-send-email-Julia.Lawall@inria.fr Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-01ALSA: ad1816a: constify copied structureJulia Lawall1-1/+1
The snd_ad1816a_timer_table structure is only copied into another structure, so make it const. The opportunity for this change was found using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Link: https://lore.kernel.org/r/1577864614-5543-2-git-send-email-Julia.Lawall@inria.fr Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-31ALSA: uapi: Add linux/types.h include back (but carefully)Takashi Iwai3-0/+12
A few uapi/sound/*.h headers have been corrected for recovering from the compile errors with the existing user-space code (alsa-lib) by the recent commits. OTOH, these introduced another regression, as now linux/types.h inclusion became mandatory for the uapi header checks. As a compromise, this patch re-adds linux/types.h inclusions again, but conditionally not to break other non-standard user-space stuff again. Fixes: 2e4688676392 ("ALSA: emu10k1: Make uapi/emu10k1.h compilable again") Fixes: d63e63d42107 ("ALSA: hdsp: Make uapi/hdsp.h compilable again") Fixes: 4fa406caf950 ("ALSA: hdspm: Drop linux/types.h inclusion in uapi header") Reported-by: kbuild test robot <lkp@intel.com> Link: https://lore.kernel.org/r/20191230212742.28925-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-28ALSA: usb-audio: fix Corsair Virtuoso mixer label collisionChris Boyle1-0/+20
The Corsair Virtuoso RGB Wireless is a USB headset with a mic and a sidetone feature. Label its mixer appropriately instead of all "Headset", so that applications such as Pulseaudio don't just move the sidetone control when they intend the main Headset control. Signed-off-by: Chris Boyle <chris@boyle.name> Link: https://lore.kernel.org/r/20191227094053.GA12167@nova.chris.boyle.name Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-26ALSA: control: Fix incompatible protocol errorTakashi Iwai1-1/+1
The recent change to bump the ALSA control API protocol version from 2.0.7 to 2.1.0 caused a regression on user-space; while the user-space expects both the major and the minor versions to be identical with the supported numbers, we changed the minor number from 0 to 1. For recovering from the incompatibility, this patch changes the protocol version again to 2.0.8, which is compatible, but yet higher than the original number 2.0.7, indicating that the protocol change. Fixes: bd3eb4e87eb3 ("ALSA: ctl: bump protocol version up to v2.1.0") Reported-by: Paul Menzel <pmenzel@molgen.mpg.de> Tested-by: Paul Menzel <pmenzel@molgen.mpg.de> Link: https://lore.kernel.org/r/s5h1rsr769i.wl-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-24ALSA: ctl: allow TLV read operation for callback type of element in locked caseTakashi Sakamoto1-2/+3
A design of ALSA control core allows applications to execute three operations for TLV feature; read, write and command. Furthermore, it allows driver developers to process the operations by two ways; allocated array or callback function. In the former, read operation is just allowed, thus developers uses the latter when device driver supports variety of models or the target model is expected to dynamically change information stored in TLV container. The core also allows applications to lock any element so that the other applications can't perform write operation to the element for element value and TLV information. When the element is locked, write and command operation for TLV information are prohibited as well as element value. Any read operation should be allowed in the case. At present, when an element has callback function for TLV information, TLV read operation returns EPERM if the element is locked. On the other hand, the read operation is success when an element has allocated array for TLV information. In both cases, read operation is success for element value expectedly. This commit fixes the bug. This change can be backported to v4.14 kernel or later. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Reviewed-by: Jaroslav Kysela <perex@perex.cz> Link: https://lore.kernel.org/r/20191223093347.15279-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-23ALSA: ctl: bump protocol version up to v2.1.0Takashi Sakamoto1-1/+1
In a development period for v5.6 kernel, some changes are introduced to structures in ALSA control interface: - 'tstamp' member is removed from 'struct snd_ctl_elem_value - 'TSTAMP' flag is removed from a set of access flags for 'struct snd_ctl_elem_info' - 'dimen' member is removed from 'struct snd_ctl_elem_info Although these changes were introduced with enough consideration for backward compatibility, they include slightly lose of it. This commit bumps protocol version of ALSA control interface up to v2.1.0. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191223023921.8151-5-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-23ALSA: ctl: remove dimen member from elem_info structureTakashi Sakamoto2-37/+1
The 'dimen' member of 'struct snd_ctl_elem_info' is designed to deliver information to use an array of value as multi-dimensional values. This feature is used just by echoaudio PCI driver, and fortunately it's not used by the other applications than 'echomixer' in alsa-tools. In a previous commit, usage of 'dimen' member is removed from echoaudio PCI driver. Nowadays no driver/application use the feature. This commit removes the member from structure. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191223023921.8151-4-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-23ALSA: pci: echoaudio: remove usage of dimen menber of elem_value structureTakashi Sakamoto1-11/+0
In a couple of years ago, 'echomixer' userspace application was revised not to use 'dimen' member of 'struct snd_ctl_elem_info'. This commit removes usage of 'dimen' member from echoaudio PCI driver so that no implementation uses the member. Reference: 275353bb684e ("ALSA: echoaudio: purge contradictions between dimension matrix members and total number of members") Reference: 51db452df07b ("Revert "ALSA: echoaudio: purge contradictions between dimension matrix members and total number of members") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191223023921.8151-3-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-23ALSA: ctl: remove unused macro for timestamping of elem_valueTakashi Sakamoto1-1/+1
In a former commit, 'tstamp' member was removed from 'struct snd_ctl_elem_value' in a middle way toward solution of Y2038 issue. In a protocol of ALSA control interface, this member is designed to deliver timestamp information in the value structure when the target element supports SNDRV_CTL_ELEM_ACCESS_TIMESTAMP flag. Actually, the feature is neither used by kernel space nor user space, especiall alsa-lib has no API for the feature. Therefore it's reasonable to remove both of them. Practically, the timestamp information corresponds to no information about type of clock ID. It can bring confusions to applications. Reference: a4e7dd35b9da ("ALSA: Avoid using timespec for struct snd_ctl_elem_value") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191223023921.8151-2-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-20ALSA: uapi: Drop unneeded typedefsTakashi Iwai3-27/+0
We kept some typedefs in uapi/sound/*.h so that the programs in alsa-tools can be built. Now that alsa-lib takes these and applies the workarounds in its own, we don't need these typedefs any longer in the kernel uapi side. Let's drop them. Link: https://lore.kernel.org/r/20191220161555.20232-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-20ALSA: uapi: Drop asound.h inclusion from asoc.hTakashi Iwai1-1/+0
The asound.h isn't always available while asoc.h itself is distributed in alsa-lib package. So we need to avoid the unnecessary inclusion of asound.h from there. Link: https://lore.kernel.org/r/20191220153415.2740-6-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-20ALSA: uapi: Fix typos and header inclusion in asound.hTakashi Iwai1-3/+3
The recent changes in uapi/asoundlib.h caused some build errors in alsa-lib side because of a typo and the new included files. Basically asound.h is supposed to be usable also on non-Linux systems, so we've tried to avoid the Linux-specific include files. This patch is an attempt to recover from those changes. Fixes: 3ddee7f88aaf ("ALSA: Avoid using timespec for struct snd_pcm_status") Fixes: 80fe7430c708 ("ALSA: add new 32-bit layout for snd_pcm_mmap_status/control") Link: https://lore.kernel.org/r/20191220153415.2740-5-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-20ALSA: hdspm: Drop linux/types.h inclusion in uapi headerTakashi Iwai1-2/+0
The hdspm.h uapi header has been used also from non-Linux or platforms that don't have linux/*.h. It was OK in the past because alsa-lib contained the modified version of this header file, but now it tries to the verbatim copy, so it broke the build. This fixes it again. Link: https://lore.kernel.org/r/20191220153415.2740-4-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-20ALSA: hdsp: Make uapi/hdsp.h compilable againTakashi Iwai2-4/+2
Recently alsa-lib updated its content of sound/hdsp.h just by copying the latest Linus kernel uapi/*.h, and this broke the build of alsa-tools programs. We used to modify the headers so that they can be built without asoundlib.h and linux kernel headers, and the verbatim copy doesn't work as is. This patch removes again the linux/types.h inclusion and drop __user prefix that broke the build and adjusts the corresponding code. Link: https://lore.kernel.org/r/20191220153415.2740-3-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-20ALSA: emu10k1: Make uapi/emu10k1.h compilable againTakashi Iwai2-24/+40
Recently we updated the content in alsa-lib uapi header files by just copying from the latest Linus kernel uapi/*.h, and noticed that it broke the build of some alsa-tools programs. The reason is that we used to have a modified version in the past, so that the program can be built without referring to the unexported stuff like snd_ctl_elem_id or __user prefix. This patch attempts to restore that, i.e. dropping the stuff that can't be referred in the user-space. For adapting the changes in uapi/emu10k1.h, the emu10k1 driver code is also slightly modified. Most of changes are pointer cast. Link: https://lore.kernel.org/r/20191220153415.2740-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-18Merge branch 'for-linus' into for-nextTakashi Iwai30-114/+223
Taking the 5.5 devel branch back into the main devel branch. A USB-audio fix needs to be adjusted to adapt the changes that have been formerly applied for stop_sync. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-18ALSA: usb-audio: set the interface format after resume on Dell WD19Hui Wang5-4/+35
Recently we found the headset-mic on the Dell Dock WD19 doesn't work anymore after s3 (s2i or deep), this problem could be workarounded by closing (pcm_close) the app and then reopening (pcm_open) the app, so this bug is not easy to be detected by users. When problem happens, retire_capture_urb() could still be called periodically, but the size of captured data is always 0, it could be a firmware bug on the dock. Anyway I found after resuming, the snd_usb_pcm_prepare() will be called, and if we forcibly run set_format() to set the interface and its endpoint, the capture size will be normal again. This problem and workaound also apply to playback. To fix it in the kernel, add a quirk to let set_format() run forcibly once after resume. Signed-off-by: Hui Wang <hui.wang@canonical.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20191218132650.6303-1-hui.wang@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de>