ALSA: hda: warn on spurious response

To help disclose hardware bugs.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 5 insertions, 1 deletions

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 7c43f92de2fa..175f07a381ba 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -632,7 +632,11 @@ static void azx_update_rirb(struct azx *chip)
                         chip->rirb.res[addr] = res;
                         smp_wmb();
                         chip->rirb.cmds[addr]--;
-                }
+                } else
+                        snd_printk(KERN_ERR SFX "spurious response %#x:%#x, "
+                                   "last cmd=%#08x\n",
+                                   res, res_ex,
+                                   chip->last_cmd[addr]);
         }
 }