[PATCH] ASoC: SOF: Intel: fix page fault at probe if i915 init fails

Mark Brown broonie at kernel.org
Wed Jan 13 18:53:20 CET 2021


On Wed, 13 Jan 2021 17:07:15 +0200, Kai Vehmanen wrote:
> The earlier commit to fix runtime PM in case i915 init fails,
> introduces a possibility to hit a page fault.
> 
> snd_hdac_ext_bus_device_exit() is designed to be called from
> dev.release(). Calling it outside device reference counting, is
> not safe and may lead to calling the device_exit() function
> twice. Additionally, as part of ext_bus_device_init(), the device
> is also registered with snd_hdac_device_register(). Thus before
> calling device_exit(), the device must be removed from device
> hierarchy first.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: SOF: Intel: fix page fault at probe if i915 init fails
      commit: 9c25af250214e45f6d1c21ff6239a1ffeeedf20e

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


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