[PATCH v2 0/2][SRU]{OEM-B]SATA device is not going to DEVSLP

[AceLan Kao]

BugLink: https://bugs.launchpad.net/bugs/1781533

[Impact]
Any of the platforms we’ve been seeing SATA problems not going to deepest
state leading to other devices not getting there during long idle or
s2idle. And it also prevents the system from entering deeper PC state
other than PC3.

[Test]
Verified the power consumption on some new platforms, it doesn't do too
much difference to the numbers, but it improves.

[Fix]
Suggested from Intel and Dell to contains the 2 commits
https://patchwork.kernel.org/patch/10502285/
https://patchwork.kernel.org/patch/10502287/

[Regression Potential]
Low, the production machines with suspend-to-idle enabled should have the
DEVSLP function been validated.

[Misc]
Those commits do not show up in any public git tree yet, so let's verify
them in oem kernel first, and then will submit to bionic kernel later.

Srinivas Pandruvada (2):
  UBUNTU: SAUCE: ata: libahci: Correct setting of DEVSLP register
  UBUNTU: SAUCE: ata: libahci: Allow reconfigure of DEVSLP register

 drivers/ata/libahci.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

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2.17.1