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alistair23-linux/sound/soc/kirkwood
Russell King dc39596a90
ASoC: kirkwood: fix device remove ordering
The devm conversion of kirkwood was incorrect; on removal, devm takes
effect after the "remove" function has returned.  So, the effect of
the conversion was to change the order during remove from:

  - snd_soc_unregister_component() (unpublishes interfaces)
  - clk_disable_unprepare()
  - cleanup resources

After the conversion, this became:

  - clk_disable_unprepare() - while the device may still be active
  - snd_soc_unregister_component()
  - cleanup resources

Hence, it introduces a bug, where the internal clock for the device
may be shut down before the device itself has been shut down.  It is
known that Marvell SoCs, including Dove, locks up if registers for a
peripheral that has its clocks disabled are accessed.

Fixes: f98fc0f815 ("ASoC: kirkwood: replace platform to component")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1iNGyP-0004oN-BA@rmk-PC.armlinux.org.uk
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-23 18:20:55 +01:00
..
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
armada-370-db.c ASoC: kirkwood: armada-370-db: consider CPU-Platform possibility 2019-06-28 15:12:59 +01:00
kirkwood-dma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
kirkwood-i2s.c ASoC: kirkwood: fix device remove ordering 2019-10-23 18:20:55 +01:00
kirkwood.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00