- 14 Jan, 2020 4 commits
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Pierre-Louis Bossart authored
Fix GCC warning with W=1, previous cleanup did not remove unnecessary variable. sound/soc/sof/intel/hda-dai.c: In function ‘hda_link_pcm_prepare’: sound/soc/sof/intel/hda-dai.c:265:31: warning: variable ‘hda_stream’ set but not used [-Wunused-but-set-variable] 265 | struct sof_intel_hda_stream *hda_stream; | ^~~~~~~~~~ Fixes: a3ebccb5 ("ASoC: SOF: Intel: hda: reset link DMA state in prepare") Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com> Signed-off-by:Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200113205620.27285-1-pierre-louis.bossart@linux.intel.comSigned-off-by:
Mark Brown <broonie@kernel.org>
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Pierre-Louis Bossart authored
make W=1 reports defined-but-not-used and kernel-doc formatting issues. No functionality change. Fixes: d1ede064 ("ASoC: rt715: add RT715 codec driver") Cc: Jack Yu <jack.yu@realtek.com> Signed-off-by:
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Kuninori Morimoto authored
This patch fixup this error CC sound/soc/codecs/rt715-sdw.o linux/sound/soc/codecs/rt715-sdw.c: In function 'rt715_dev_resume': linux/sound/soc/codecs/rt715-sdw.c:568:28: error: implicit declaration\ of function 'to_sdw_slave_device'; did you mean 'sdw_slave_modalias'?\ [-Werror=implicit-function-declaration] struct sdw_slave *slave = to_sdw_slave_device(dev); ^~~~~~~~~~~~~~~~~~~ sdw_slave_modalias linux/sound/soc/codecs/rt715-sdw.c:568:28: warning: initialization of\ 'struct sdw_slave *' from 'int' makes pointer from integer without a\ cast [-Wint-conversion] cc1: some warnings being treated as errors Signed-off-by:Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87h80yhm9p.wl-kuninori.morimoto.gx@renesas.comSigned-off-by:
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YueHaibing authored
Remove including <linux/version.h> that don't need it. Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Link: https://lore.kernel.org/r/20200114011319.173401-1-yuehaibing@huawei.comSigned-off-by:
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- 13 Jan, 2020 16 commits
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Shuming Fan authored
This is the initial amplifier driver for rt1308-sdw. Signed-off-by:
Shuming Fan <shumingf@realtek.com> Link: https://lore.kernel.org/r/20200110014606.17333-1-shumingf@realtek.comTested-by:
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Chen Zhou authored
If CONFIG_SND_ATMEL_SOC_DMA=m, build error: sound/soc/atmel/atmel_ssc_dai.o: In function `atmel_ssc_set_audio': (.text+0x7cd): undefined reference to `atmel_pcm_dma_platform_register' Function atmel_pcm_dma_platform_register is defined under CONFIG SND_ATMEL_SOC_DMA, so select SND_ATMEL_SOC_DMA in CONFIG SND_ATMEL_SOC_SSC, same to CONFIG_SND_ATMEL_SOC_PDC. Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
Chen Zhou <chenzhou10@huawei.com> Link: https://lore.kernel.org/r/20200113133242.144550-1-chenzhou10@huawei.comSigned-off-by:
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Pierre-Louis Bossart authored
Use static tables to automatically select the relevant configurations. Signed-off-by:
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Pierre-Louis Bossart authored
RT711 is in SoundWire mode on link0. RT1308 is either on SSP2 or on SoundWire link1 (depending on hardware reworks). Signed-off-by:
Rander Wang <rander.wang@intel.com> Signed-off-by:
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Rander Wang authored
The two configurations are with the Realtek 3-in-1 board requiring all 4 links to be enabled, or basic configuration with the on-board RT700 using link1. For now we only have definitions for CML. CNL and CFL are just placeholders. Signed-off-by:
Rander Wang <rander.wang@linux.intel.com> Signed-off-by:
Bard Liao <yung-chuan.liao@linux.intel.com> Signed-off-by:
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Bard Liao authored
The two configurations are with the Realtek 3-in-1 board requiring all 4 links to be enabled, or basic configuration with the on-board RT700 using link0. Signed-off-by:
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Pierre-Louis Bossart authored
We cannot really lump SoundWire-based configurations into the same tables since the mechanisms to identify boards is based on link configurations and _ADR instead of _HID for I2S, so define new tables Signed-off-by:
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Pierre-Louis Bossart authored
For SoundWire support, we added a 'link_mask' to describe the PCB hardware layout. This helped form a signature that can be used as a first-order way of detecting the hardware and selecting the machine driver. The concept of link_mask is however not enough. Some BIOS enable all links, even when there are no devices physically connected. We can also see variations with multiple devices attached on one link, or different types of devices connected on the same link. To accurately represent the hardware, we need to build static tables where each link exposes a list of expected devices represented by the 64-bit _ADR field (which uniquely identifies each device). The new 'links' field is optional when the link_mask is sufficient to represent a platform in a unique way. The existing mechanism to support I2C devices is left as is, it'd be too invasive to change the existing support for _HID and the notion of link is not relevant either. Signed-off-by:
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Kai Vehmanen authored
Any app using ALSA OSS emulation on top of SOF will fail to error from OSS SNDCTL_DSP_SETFMT ioctl. Reported initially as an issue with xournalpp (application using PortAudio with an OSS backend), but applies more generally to other apps using OSS as well. Problem is caused by SOF PCM not supporting repeated calls to hw_params(), without matching calls to pcm_free(). This is however exactly what the ALSA OSS PCM code is doing when it is handling the OSS ioctls. The problem will lead to leaking of DSP resources and eventual failure of DSP PCM_PARAMS IPC. BugLink: https://github.com/thesofproject/linux/issues/1510Signed-off-by:
Kai Vehmanen <kai.vehmanen@linux.intel.com> Signed-off-by:
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Pierre-Louis Bossart authored
The legacy driver uses dummy cpu_dai and platform, SOF requires actual values to bind. Signed-off-by:
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Pan Xiuli authored
The legacy driver uses dummy cpu_dai and platform, SOF requires actual values to bind. Signed-off-by:
Pan Xiuli <xiuli.pan@linux.intel.com> Signed-off-by:
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Pierre-Louis Bossart authored
The legacy driver uses dummy cpu_dai and platform, SOF requires actual values to bind. Signed-off-by:
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Pierre-Louis Bossart authored
The existing machine driver depends on SPI Master capabilities, but the Kconfig does not model this dependency and the SPI controller needs to be selected as well. Without this patch the machine driver probe would fail with the spi-RT5677AA:00 component never registered by the ACPI/LPSS subsystem. Signed-off-by:
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YueHaibing authored
Remove including <linux/version.h> that don't need it. Signed-off-by:
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Jack Yu authored
Signed-off-by:
Jack Yu <jack.yu@realtek.com> Link: https://lore.kernel.org/r/20200110021821.17843-1-jack.yu@realtek.comSigned-off-by:
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Paul Burton authored
Commit a857e073 ("ASoC: txx9: txx9aclc: remove snd_pcm_ops") removed the last use of the rtd variable but didn't remove its definition, leading to the following warning/error for MIPS rbtx49xx_defconfig builds: sound/soc/txx9/txx9aclc.c: In function 'txx9aclc_pcm_hw_params': sound/soc/txx9/txx9aclc.c:54:30: error: unused variable 'rtd' [-Werror=unused-variable] struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream); ^~~ Resolve this by removing the unused variable. Signed-off-by:
Paul Burton <paulburton@kernel.org> Fixes: a857e073 ("ASoC: txx9: txx9aclc: remove snd_pcm_ops") Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Cc: Mark Brown <broonie@kernel.org> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.com> Cc: alsa-devel@alsa-project.org Link: https://lore.kernel.org/r/20200109191422.334516-1-paulburton@kernel.orgSigned-off-by:
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- 10 Jan, 2020 11 commits
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Kuninori Morimoto authored
dpcm_fe_dai_shutdown() / soc_compr_free_fe() didn't care pmdown_time. We already have snd_soc_dapm_stream_stop() for it. Let's use common method. Signed-off-by:
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Kuninori Morimoto authored
When we stop stream, if it was Playback, we might need to care about power down time. In such case, we need to use delayed work. We have same implementation for it at soc-pcm.c and soc-compress.c, but we don't want to have duplicate code. This patch adds snd_soc_dapm_stream_stop(), and share same code. Signed-off-by:
Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Link: https://lore.kernel.org/r/871rs8t4uw.wl-kuninori.morimoto.gx@renesas.comSigned-off-by:
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Kuninori Morimoto authored
We need to setup rtd->close_delayed_work_func. It will be set at snd_soc_dai_compress_new() or soc_new_pcm(). But these setups close_delayed_work() which is same name / same implemantaion, but different local code. To reduce duplicate code, this patch moves it as snd_soc_close_delayed_work() and share same code. Signed-off-by:
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Kuninori Morimoto authored
ALSA SoC need to care pinctrl_pm_select_xxx(). It is called at soc-core and soc-pcm. soc-pcm is controlling it for activate DAI. soc-core is controlling it for whole system (= suspend/resume/probe/poweroff). If we focus to soc-core side, it need to care about BIAS level. Then, snd_soc_suspend() only is controlling it by Component base (a). Other functions are DAI base (b). (a) pinctrl_pm_select_xxx(component->dev, xxx); (b) pinctrl_pm_select_xxx(dai->dev, xxx); Because of these unbalance, the code is confusable. Here, dai->dev and component->dev are same pointer. Thus, we can replace it component base. One note here is that it cared DAI (= CPU/Codec) pin before this patch, after this patch, it cares Component (= CPU/Codec/Platform) pin. Signed-off-by:
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Kuninori Morimoto authored
snd_soc_suspend() are doing below for pinctrl_pm_select_sleep_state() int snd_soc_suspend(struct device *dev) { ... for_each_card_components(card, component) { ... (1) pinctrl_pm_select_sleep_state(component->dev); } for_each_card_rtds(card, rtd) { ... (2) pinctrl_pm_select_sleep_state(cpu_dai->dev); } } (1) is called for all component (CPU/Codec/Platform), and (2) is called for CPU DAIs. Here, component->dev is same as dai->dev. This means, it is called in duplicate on CPU case. This patch removes (2). Signed-off-by: -
Kuninori Morimoto authored
Card dai_link has .ignore_suspend, and ALSA SoC cares it when suspend. For example, like this for_each_card_rtds(card, rtd) { if (rtd->dai_link->ignore_suspend) continue; ... } But in snd_soc_suspend(), it doesn't care about it when suspending Component. This patch cares it. Signed-off-by: -
Kuninori Morimoto authored
We don't have snd_soc_rtdcom_list anymore. Let's rename snd_soc_rtdcom_add() to more understandable snd_soc_rtd_add_component() Reported-by:
Sridharan, Ranjani <ranjani.sridharan@intel.com> Signed-off-by:
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Shuming Fan authored
This is the initial codec driver for rt700. Signed-off-by:
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Kuninori Morimoto authored
Current ALSA SoC is using struct snd_soc_rtdcom_list to connecting component to rtd by using list_head. struct snd_soc_rtdcom_list { struct snd_soc_component *component; struct list_head list; /* rtd::component_list */ }; struct snd_soc_pcm_runtime { ... struct list_head component_list; /* list of connected components */ ... }; The CPU/Codec/Platform component which will be connected to rtd (a) is indicated via dai_link at snd_soc_add_pcm_runtime() int snd_soc_add_pcm_runtime(...) { ... /* Find CPU from registered CPUs */ rtd->cpu_dai = snd_soc_find_dai(dai_link->cpus); ... (a) snd_soc_rtdcom_add(rtd, rtd->cpu_dai->component); ... /* Find CODEC from registered CODECs */ (b) for_each_link_codecs(dai_link, i, codec) { rtd->codec_dais[i] = snd_soc_find_dai(codec); ... (a) snd_soc_rtdcom_add(rtd, rtd->codec_dais[i]->component); } ... /* Find PLATFORM from registered PLATFORMs */ (b) for_each_link_platforms(dai_link, i, platform) { for_each_component(component) { ... (a) snd_soc_rtdcom_add(rtd, component); } } } It shows, it is possible to know how many components will be connected to rtd by using dai_link->num_cpus dai_link->num_codecs dai_link->num_platforms If so, we can use component pointer array instead of list_head, in such case, code can be more simple. This patch removes struct snd_soc_rtdcom_list that is only of temporary value, and convert to pointer array. Signed-off-by: -
Mark Brown authored
This reverts commit 4e93c129 (ASoC: max98090: fix incorrect helper in max98090_dapm_put_enum_double()) which was misapplied. Reported-by:
Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by:
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Mark Brown authored
Merge branch 'for-5.5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-5.6
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- 09 Jan, 2020 9 commits
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Shuming Fan authored
This is the initial codec driver for rt711. Signed-off-by:
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Mark Brown authored
Merge tag 'sdw_interfaces_5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire into asoc-5.6 SoundWire tag for ASoC This contains the recently merged soundwire interface changes for ASoC subsystem.
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Srinivas Kandagatla authored
This patch adds support to WSA8810/WSA8815 Class-D Smart Speaker Amplifier. This Amplifier is primarily interfaced with SoundWire. One WSA is used for mono speaker configuration and second one would give stereo setup. This patch is tested on SDM845 based DragonBoard DB845c and Lenovo YOGA C630 Laptop based on SDM850 with WSA8815 speaker amplifiers. Signed-off-by:
Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by:
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Srinivas Kandagatla authored
This patch adds bindings for WSA8810/WSA8815 Class-D Smart Speaker Amplifier. This Amplifier also has a simple thermal sensor for over temperature and speaker protection. Signed-off-by:
Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200107135929.3267-2-srinivas.kandagatla@linaro.orgSigned-off-by:
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Olivier Moysan authored
In current driver, locks can be taken as follows: - Register access: take a lock on regmap config and then on clock. - Master clock provider: take a lock on clock and then on regmap config. This can lead to the circular locking summarized below. Remove peripheral clock management through regmap framework, and manage peripheral clock in driver instead. On register access, lock on clock is taken first, which allows to avoid possible locking issue. [ 6696.561513] ====================================================== [ 6696.567670] WARNING: possible circular locking dependency detected [ 6696.573842] 4.19.49 #866 Not tainted [ 6696.577397] ------------------------------------------------------ [ 6696.583566] pulseaudio/6439 is trying to acquire lock: [ 6696.588697] 87b0a25b (enable_lock){..-.}, at: clk_enable_lock+0x64/0x128 [ 6696.595377] [ 6696.595377] but task is already holding lock: [ 6696.601197] d858f825 (stm32_sai_sub:1342:(sai->regmap_config)->lock){....} ... [ 6696.812513] Possible unsafe locking scenario: [ 6696.812513] [ 6696.818418] CPU0 CPU1 [ 6696.822935] ---- ---- [ 6696.827451] lock(stm32_sai_sub:1342:(sai->regmap_config)->lock); [ 6696.833618] lock(enable_lock); [ 6696.839350] lock(stm32_sai_sub:1342: (sai->regmap_config)->lock); [ 6696.848035] lock(enable_lock); Fixes: 03e78a24 ("ASoC: stm32: sai: add h7 support") Signed-off-by:Olivier Moysan <olivier.moysan@st.com> Link: https://lore.kernel.org/r/20200109083254.478-1-olivier.moysan@st.comSigned-off-by:
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Marek Szyprowski authored
Commit 62d5ae4c ("ASoC: max98090: save and restore SHDN when changing sensitive registers") extended the code for handling many controls by adding a custom put function to them. That new custom put function properly handles relations between codec's hardware registers. However they used card->dapm_mutex to properly serialize those operations. This in turn triggers a lockdep warning about possible circular dependency. Fix this by introducing a separate mutex only for serializing the SHDN hardware register related operations. This fixes the following lockdep warning observed on Exynos4412-based Odroid U3 board: ====================================================== WARNING: possible circular locking dependency detected 5.5.0-rc5-next-20200107 #166 Not tainted ------------------------------------------------------ alsactl/1104 is trying to acquire lock: ed0d50f4 (&card->dapm_mutex){+.+.}, at: max98090_shdn_save+0x1c/0x28 but task is already holding lock: edb4b49c (&card->controls_rwsem){++++}, at: snd_ctl_ioctl+0xcc/0xbb8 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&card->controls_rwsem){++++}: snd_ctl_add_replace+0x3c/0x84 dapm_create_or_share_kcontrol+0x24c/0x2e0 snd_soc_dapm_new_widgets+0x308/0x594 snd_soc_bind_card+0x80c/0xad4 devm_snd_soc_register_card+0x34/0x6c odroid_audio_probe+0x288/0x34c platform_drv_probe+0x6c/0xa4 really_probe+0x200/0x490 driver_probe_device+0x78/0x1f8 bus_for_each_drv+0x74/0xb8 __device_attach+0xd4/0x16c bus_probe_device+0x88/0x90 deferred_probe_work_func+0x3c/0xd0 process_one_work+0x22c/0x7c4 worker_thread+0x44/0x524 kthread+0x130/0x164 ret_from_fork+0x14/0x20 0x0 -> #0 (&card->dapm_mutex){+.+.}: lock_acquire+0xe8/0x270 __mutex_lock+0x9c/0xb18 mutex_lock_nested+0x1c/0x24 max98090_shdn_save+0x1c/0x28 max98090_put_enum_double+0x20/0x40 snd_ctl_ioctl+0x190/0xbb8 ksys_ioctl+0x470/0xaf8 ret_fast_syscall+0x0/0x28 0xbefaa564 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&card->controls_rwsem); lock(&card->dapm_mutex); lock(&card->controls_rwsem); lock(&card->dapm_mutex); *** DEADLOCK *** 1 lock held by alsactl/1104: #0: edb4b49c (&card->controls_rwsem){++++}, at: snd_ctl_ioctl+0xcc/0xbb8 stack backtrace: CPU: 0 PID: 1104 Comm: alsactl Not tainted 5.5.0-rc5-next-20200107 #166 Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) (unwind_backtrace) from [<c010e180>] (show_stack+0x10/0x14) (show_stack) from [<c0b2a09c>] (dump_stack+0xb4/0xe0) (dump_stack) from [<c018a1c0>] (check_noncircular+0x1ec/0x208) (check_noncircular) from [<c018c5dc>] (__lock_acquire+0x1210/0x25ec) (__lock_acquire) from [<c018e2d8>] (lock_acquire+0xe8/0x270) (lock_acquire) from [<c0b49678>] (__mutex_lock+0x9c/0xb18) (__mutex_lock) from [<c0b4a110>] (mutex_lock_nested+0x1c/0x24) (mutex_lock_nested) from [<c0839b3c>] (max98090_shdn_save+0x1c/0x28) (max98090_shdn_save) from [<c083a5b8>] (max98090_put_enum_double+0x20/0x40) (max98090_put_enum_double) from [<c080d0e8>] (snd_ctl_ioctl+0x190/0xbb8) (snd_ctl_ioctl) from [<c02cafec>] (ksys_ioctl+0x470/0xaf8) (ksys_ioctl) from [<c0101000>] (ret_fast_syscall+0x0/0x28) ... Fixes: 62d5ae4c ("ASoC: max98090: save and restore SHDN when changing sensitive registers") Signed-off-by:
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Marek Szyprowski authored
Commit 62d5ae4c ("ASoC: max98090: save and restore SHDN when changing sensitive registers") extended the code for handling "LTENL Mux", "LTENR Mux", "LBENL Mux" and "LBENR Mux" controls by adding a custom max98090_dapm_put_enum_double() function to them. However that function used incorrect helper to get its component object. Fix this by using the proper snd_soc_dapm_* helper. This fixes the following NULL pointer exception observed on Exynos4412-based Odroid U3 board: 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 000000b0 pgd = (ptrval) [000000b0] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 1104 Comm: alsactl Not tainted 5.5.0-rc5-next-20200107 #166 Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) PC is at __mutex_lock+0x54/0xb18 LR is at ___might_sleep+0x3c/0x2e0 ... Process alsactl (pid: 1104, stack limit = 0x(ptrval)) ... [<c0b49630>] (__mutex_lock) from [<c0b4a110>] (mutex_lock_nested+0x1c/0x24) [<c0b4a110>] (mutex_lock_nested) from [<c0839b3c>] (max98090_shdn_save+0x1c/0x28) [<c0839b3c>] (max98090_shdn_save) from [<c083a4f8>] (max98090_dapm_put_enum_double+0x20/0x40) [<c083a4f8>] (max98090_dapm_put_enum_double) from [<c080d0e8>] (snd_ctl_ioctl+0x190/0xbb8) [<c080d0e8>] (snd_ctl_ioctl) from [<c02cafec>] (ksys_ioctl+0x470/0xaf8) [<c02cafec>] (ksys_ioctl) from [<c0101000>] (ret_fast_syscall+0x0/0x28) ... ---[ end trace 0e93f0580f4b9241 ]--- Fixes: 62d5ae4c ("ASoC: max98090: save and restore SHDN when changing sensitive registers") Signed-off-by:
Tzung-Bi Shih <tzungbi@google.com> Link: https://lore.kernel.org/r/20200108115007.31095-1-m.szyprowski@samsung.comSigned-off-by:
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Marek Szyprowski authored
Commit 62d5ae4c ("ASoC: max98090: save and restore SHDN when changing sensitive registers") extended the code for handling "LTENL Mux", "LTENR Mux", "LBENL Mux" and "LBENR Mux" controls by adding a custom max98090_dapm_put_enum_double() function to them. However that function used incorrect helper to get its component object. Fix this by using the proper snd_soc_dapm_* helper. This fixes the following NULL pointer exception observed on Exynos4412-based Odroid U3 board: 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 000000b0 pgd = (ptrval) [000000b0] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 1104 Comm: alsactl Not tainted 5.5.0-rc5-next-20200107 #166 Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) PC is at __mutex_lock+0x54/0xb18 LR is at ___might_sleep+0x3c/0x2e0 ... Process alsactl (pid: 1104, stack limit = 0x(ptrval)) ... [<c0b49630>] (__mutex_lock) from [<c0b4a110>] (mutex_lock_nested+0x1c/0x24) [<c0b4a110>] (mutex_lock_nested) from [<c0839b3c>] (max98090_shdn_save+0x1c/0x28) [<c0839b3c>] (max98090_shdn_save) from [<c083a4f8>] (max98090_dapm_put_enum_double+0x20/0x40) [<c083a4f8>] (max98090_dapm_put_enum_double) from [<c080d0e8>] (snd_ctl_ioctl+0x190/0xbb8) [<c080d0e8>] (snd_ctl_ioctl) from [<c02cafec>] (ksys_ioctl+0x470/0xaf8) [<c02cafec>] (ksys_ioctl) from [<c0101000>] (ret_fast_syscall+0x0/0x28) ... ---[ end trace 0e93f0580f4b9241 ]--- Fixes: 62d5ae4c ("ASoC: max98090: save and restore SHDN when changing sensitive registers") Signed-off-by:
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Wei Yongjun authored
In case of error, the function devm_ioremap() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Fixes: c9fe7db6 ("ASoC: amd: Refactoring of DAI from DMA driver") Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Link: https://lore.kernel.org/r/20200108035954.51317-1-weiyongjun1@huawei.comSigned-off-by:
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