https://github.com/torvalds/linux
Revision 535115b5ff51c702a9a22feb918707c2fe1fbd17 authored by Takashi Iwai on 12 June 2015, 05:53:58 UTC, committed by Takashi Iwai on 12 June 2015, 06:05:02 UTC
The previous patch tried to continue the probe if i915 binding fails.
For for simplicity reason, we haven't implemented abort even for
controller chips that are dedicated for HDMI/DP on HSW and BDW.
However, Mengdong suggested that this can be dangerous; BIOS may
disable gfx power well although the PCI entry for HD-audio is left,
and this may result in the unexpected behavior, kernel errors, etc.

For avoiding this situation, abort the probe at i915 binding failure
only for HSW/BDW chips selectively.  For other chips, it still
continues.

Fixes: bf06848bdbe5 ('ALSA: hda - Continue probing even if i915 binding fails')
Reported-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 parent a686ec4
History
Tip revision: 535115b5ff51c702a9a22feb918707c2fe1fbd17 authored by Takashi Iwai on 12 June 2015, 05:53:58 UTC
ALSA: hda - Abort the probe without i915 binding for HSW/BDW
Tip revision: 535115b
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