Files
kernel_amazon_mt8127-common/include/linux
Gabriele Mazzotta e8d1999916 libata: Ignore spurious PHY event on LPM policy change
commit 09c5b4803a80a5451d950d6a539d2eb311dc0fb1 upstream.

When the LPM policy is set to ATA_LPM_MAX_POWER, the device might
generate a spurious PHY event that cuases errors on the link.
Ignore this event if it occured within 10s after the policy change.

The timeout was chosen observing that on a Dell XPS13 9333 these
spurious events can occur up to roughly 6s after the policy change.

Link: http://lkml.kernel.org/g/3352987.ugV1Ipy7Z5@xps13
Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-05 23:19:58 -07:00
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