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ALSA: hda: Abort capability probe on invalid capability

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On reading wrong capability pointer values driver may crash, so whenever
driver discovers unknown HDA capability, log it as error and stop traversing
the link list further.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Rakesh Ughreja 2017-10-24 18:26:47 +05:30 committed by Takashi Iwai
parent 9780ded39b
commit b676da70c4
1 changed files with 2 additions and 1 deletions
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3
sound/hda/hdac_controller.c
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@ -314,7 +314,8 @@ int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus)
break;
default:
dev_dbg(bus->dev, "Unknown capability %d\n", cur_cap);
dev_err(bus->dev, "Unknown capability %d\n", cur_cap);
cur_cap = 0;
break;
}