From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 1 Jun 2006 09:42:14 +0000 (+0200)
Subject: [ALSA] hda-intel - Fix race in remove
X-Git-Tag: v2.6.18-rc1~1081^2~274
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f079c25ab8a7d223875c5bac9b23b484e4a18f88;p=platform%2Fkernel%2Flinux-exynos.git

[ALSA] hda-intel - Fix race in remove

Call iounmap after free_irq to avoid invalid accesses in the
shared irq.  The patch is taken from
	https://bugzilla.novell.com/show_bug.cgi?id=167869

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 0154389..4070b5c 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1402,10 +1402,10 @@ static int azx_free(struct azx *chip)
 		msleep(1);
 	}
 
-	if (chip->remap_addr)
-		iounmap(chip->remap_addr);
 	if (chip->irq >= 0)
 		free_irq(chip->irq, (void*)chip);
+	if (chip->remap_addr)
+		iounmap(chip->remap_addr);
 
 	if (chip->bdl.area)
 		snd_dma_free_pages(&chip->bdl);