Merge branch 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: hda-intel: Avoid divide by zero crash
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index b8faa6d..e767c3f 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1893,6 +1893,12 @@
if (!bdl_pos_adj[chip->dev_index])
return 1; /* no delayed ack */
+ if (azx_dev->period_bytes == 0) {
+ printk(KERN_WARNING
+ "hda-intel: Divide by zero was avoided "
+ "in azx_dev->period_bytes.\n");
+ return 0;
+ }
if (pos % azx_dev->period_bytes > azx_dev->period_bytes / 2)
return 0; /* NG - it's below the period boundary */
return 1; /* OK, it's fine */
