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authorRakesh Ughreja <rakesh.a.ughreja@intel.com>2017-10-24 18:26:47 +0530
committerTakashi Iwai <tiwai@suse.de>2017-10-24 08:13:55 +0200
commitb676da70c495acb2515de76300596e9147806ead (patch)
tree2c5707619daeed3fac126c478b138433e6781307 /sound/hda/hdac_controller.c
parent9780ded39bef5d22a84bdc39112df93f70a58bdd (diff)
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>
Diffstat (limited to 'sound/hda/hdac_controller.c')
-rw-r--r--sound/hda/hdac_controller.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c
index 978dc1801b3a..8f7d0d9ed762 100644
--- a/sound/hda/hdac_controller.c
+++ b/sound/hda/hdac_controller.c
@@ -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;
}