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ALSA: hda: Abort capability probe on invalid capability 

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>
hifive-unleashed-5.1
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;
}