[Artful][linux-oem] Support realtek new codec alc257 in the alsa hda driver

[Hui Wang]

BugLink: http://bugs.launchpad.net/bugs/1738911

Without this patch, the kernel will load generic codec driver, this will introduce
lots of problems like mute/micmute hotkey can't work.

[Impact]
We have an oem bug #1726245, the audio related hotkey can't work. The root cause
is the codec is not supported by current kernel driver.

[Test Case]
Applying this patch and test the audio related hotkey.

[Fix]
Backport the uptream patch, the patch is written by Realtek engineers.

[Regression Potential]
No, it does not change any existing functions.


Kailang Yang (1):
  ALSA: hda/realtek - New codec support for ALC257

 sound/pci/hda/patch_realtek.c | 8 ++++++++
 1 file changed, 8 insertions(+)

-- 
2.7.4