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ALSA: hda - mask buggy stream DMA0 for Broadwell display controller
authorMengdong Lin <mengdong.lin@intel.com>
Tue, 13 May 2014 08:57:08 +0000 (16:57 +0800)
committerTakashi Iwai <tiwai@suse.de>
Tue, 13 May 2014 10:11:58 +0000 (12:11 +0200)
commitde7269b8e72d112b5084de89e2433e7464ae0638
tree0fc40bb01dd753d2e4fb5014582276dd3e34250btree | snapshot
parent2e7e5be6f1e783d60693f3107b83a2c8c2e33cb5commit | diff
ALSA: hda - mask buggy stream DMA0 for Broadwell display controller

Broadwell display controller has 3 stream DMA engines. DMA0 cannot update DMA
postion buffer properly while DMA1 and DMA2 can work well. So this patch masks
the buggy DMA0 by keeping it as opened.

This is a tentative workaround, so keep the change small as Takashi suggested.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/hda_intel.c diff | blob | history
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