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authorRicardo Ribalda <ribalda@chromium.org>2022-11-14 13:20:34 +0100
committerWolfram Sang <wsa@kernel.org>2022-11-14 20:46:31 +0100
commit79ece9b292af6b0edcfb4d67a00711d25507640b (patch)
tree4d0dcc707942df8af08e47ed761472370eb655dc /lib/fdt_strerror.c
parent145900cf91c4b32ac05dbc8675a0c7f4a278749d (diff)
downloadlinux-79ece9b292af6b0edcfb4d67a00711d25507640b.tar.bz2
i2c: Restore initial power state if probe fails
A driver that supports I2C_DRV_ACPI_WAIVE_D0_PROBE is not expected to power off a device that it has not powered on previously. For devices operating in "full_power" mode, the first call to `i2c_acpi_waive_d0_probe` will return 0, which means that the device will be turned on with `dev_pm_domain_attach`. If probe fails the second call to `i2c_acpi_waive_d0_probe` will return 1, which means that the device will not be turned off. This is, it will be left in a different power state. Lets fix it. Reviewed-by: Hidenori Kobayashi <hidenorik@chromium.org> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com> Cc: stable@vger.kernel.org Fixes: b18c1ad685d9 ("i2c: Allow an ACPI driver to manage the device's power state during probe") Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'lib/fdt_strerror.c')
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