[SRU][B/OEM-B/C/D][PATCH 0/2] Eletrical noise occurred when external headset enter powersaving mode on a DEll machine

[Hui Wang]

BugLink: https://bugs.launchpad.net/bugs/1828798

[Impact]
Eletrical noise occurred when external headset enter powersaving mode (around 7 seconds)

[Fix]
Don't clear pinctl when runtime suspend.

[Test Case]
Plug headset and wait for the codec to enter runtime suspend, there is no any noise from headphone.

[Regression Risk]
Low. the 1st patch is specific to a Dell machine and the 2nd patch is specific to the machine with the codec alc298


Kailang Yang (1):
  ALSA: hda/realtek - Fixup headphone noise via runtime suspend

Takashi Iwai (1):
  ALSA: hda/realtek - Reduce click noise on Dell Precision 5820
    headphone

 sound/pci/hda/patch_realtek.c | 107 ++++++++++++++++++++--------------
 1 file changed, 64 insertions(+), 43 deletions(-)

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2.17.1