| Message ID | 20220617111003.2014395-1-fshao@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] ASoC: mediatek: mt8186: Fix mutex double unlock in GPIO request | expand |
On Fri, 17 Jun 2022 19:10:04 +0800, Fei Shao wrote: > The lockdep mechanism revealed an unbalanced unlocking on MT8186: > > [ 2.993966] WARNING: bad unlock balance detected! > [ 2.993978] ------------------------------------- > [ 2.993983] kworker/u16:1/10 is trying to release lock (gpio_request_mutex) at: > [ 2.993994] [<ffffffdcd9adebf8>] mt8186_afe_gpio_request+0xf8/0x210 > [ 2.994012] but there are no more locks to release! > > [...] Applied to https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next Thanks! [1/1] ASoC: mediatek: mt8186: Fix mutex double unlock in GPIO request commit: 6c9e9046e1ff356bda66661213735d33c6cfea53 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark
diff --git a/sound/soc/mediatek/mt8186/mt8186-afe-gpio.c b/sound/soc/mediatek/mt8186/mt8186-afe-gpio.c index 255ffba637d3..274c0c8ec2f2 100644 --- a/sound/soc/mediatek/mt8186/mt8186-afe-gpio.c +++ b/sound/soc/mediatek/mt8186/mt8186-afe-gpio.c @@ -230,7 +230,6 @@ int mt8186_afe_gpio_request(struct device *dev, bool enable, sel = enable ? MT8186_AFE_GPIO_PCM_ON : MT8186_AFE_GPIO_PCM_OFF; break; default: - mutex_unlock(&gpio_request_mutex); dev_err(dev, "%s(), invalid dai %d\n", __func__, dai); goto unlock; }
The lockdep mechanism revealed an unbalanced unlocking on MT8186: [ 2.993966] WARNING: bad unlock balance detected! [ 2.993978] ------------------------------------- [ 2.993983] kworker/u16:1/10 is trying to release lock (gpio_request_mutex) at: [ 2.993994] [<ffffffdcd9adebf8>] mt8186_afe_gpio_request+0xf8/0x210 [ 2.994012] but there are no more locks to release! The cause is that the mutex will be double unlocked if dai is unknown during GPIO selection, and this patch fixes it. Fixes: cfa9a966f12a ("ASoC: mediatek: mt8186: support gpio control in platform driver") Signed-off-by: Fei Shao <fshao@chromium.org> --- Changes in v2: - Trimmed the commit message sound/soc/mediatek/mt8186/mt8186-afe-gpio.c | 1 - 1 file changed, 1 deletion(-)