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| author | Johan Hovold <johan+linaro@kernel.org> | 2023-06-30 15:03:18 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-07-27 09:50:31 +0300 |
| commit | 1a261a4193b591a3d52dc34da6f44057e0871784 (patch) | |
| tree | 390cd78b3f43544259a48ded7cc31c52cb4fe397 /sound | |
| parent | 8b11d2f0e525d09c5a1a46adccc8a88dc3c94146 (diff) | |
| download | linux-1a261a4193b591a3d52dc34da6f44057e0871784.tar.xz | |
ASoC: codecs: wcd938x: fix codec initialisation race
commit 85a61b1ce461a3f62f1019e5e6423c393c542bff upstream.
Make sure to resume the codec and soundwire device before trying to read
the codec variant and configure the device during component probe.
This specifically avoids interpreting (a masked and shifted) -EBUSY
errno as the variant:
wcd938x_codec audio-codec: ASoC: error at soc_component_read_no_lock on audio-codec for register: [0x000034b0] -16
when the soundwire device happens to be suspended, which in turn
prevents some headphone controls from being registered.
Fixes: 8d78602aa87a ("ASoC: codecs: wcd938x: add basic driver")
Cc: stable@vger.kernel.org # 5.14
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reported-by: Steev Klimaszewski <steev@kali.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20230630120318.6571-1-johan+linaro@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/wcd938x.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/soc/codecs/wcd938x.c b/sound/soc/codecs/wcd938x.c index 1d2b93e19c5d..7dcd2b66f1fe 100644 --- a/sound/soc/codecs/wcd938x.c +++ b/sound/soc/codecs/wcd938x.c @@ -3095,6 +3095,10 @@ static int wcd938x_soc_codec_probe(struct snd_soc_component *component) snd_soc_component_init_regmap(component, wcd938x->regmap); + ret = pm_runtime_resume_and_get(dev); + if (ret < 0) + return ret; + wcd938x->variant = snd_soc_component_read_field(component, WCD938X_DIGITAL_EFUSE_REG_0, WCD938X_ID_MASK); @@ -3112,6 +3116,8 @@ static int wcd938x_soc_codec_probe(struct snd_soc_component *component) (WCD938X_DIGITAL_INTR_LEVEL_0 + i), 0); } + pm_runtime_put(dev); + wcd938x->hphr_pdm_wd_int = regmap_irq_get_virq(wcd938x->irq_chip, WCD938X_IRQ_HPHR_PDM_WD_INT); wcd938x->hphl_pdm_wd_int = regmap_irq_get_virq(wcd938x->irq_chip, |