On Thu, 13 Jan 2022 15:18:58 +0100, Takashi Iwai wrote: > The recent change for DPCM locking caused spurious lockdep warnings. > Actually the warnings are false-positive, as those are triggered due > to the nested stream locks for FE and BE. Since both locks belong to > the same lock class, lockdep sees it as if a deadlock. > > For fixing this, we need take PCM stream locks for BE with the nested > lock primitives. Since currently snd_pcm_stream_lock*() helper > assumes only the top-level single locking, a new helper function > snd_pcm_stream_lock_irqsave_nested() is defined for a single-depth > nested lock, which is now used in the BE DAI trigger that is always > performed inside a FE stream lock. > > [...] Applied to https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-linus Thanks! [1/1] ASoC: soc-pcm: Fix DPCM lockdep warning due to nested stream locks commit: 3c75c0ea5da749bd1efebd1387f2e5011b8c7d78 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
