From: Wu Fengguang <fengguang.wu@intel.com>
Date: Sat, 1 Aug 2009 10:48:12 +0000 (+0800)
Subject: ALSA: hda: read CORBWP inside reg_lock
X-Git-Tag: 2.1b_release~11552^2~11
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c32649feb4573b31f0a2bfdf35cbe1351256c764;p=platform%2Fkernel%2Fkernel-mfld-blackbay.git

ALSA: hda: read CORBWP inside reg_lock

This converts the last CORBWP access outside of reg_lock.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
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 b6e6314..df6d982 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -588,15 +588,17 @@ static int azx_corb_send_cmd(struct hda_bus *bus, u32 val)
 	unsigned int addr = azx_command_addr(val);
 	unsigned int wp;
 
+	spin_lock_irq(&chip->reg_lock);
+
 	/* add command to corb */
 	wp = azx_readb(chip, CORBWP);
 	wp++;
 	wp %= ICH6_MAX_CORB_ENTRIES;
 
-	spin_lock_irq(&chip->reg_lock);
 	chip->rirb.cmds[addr]++;
 	chip->corb.buf[wp] = cpu_to_le32(val);
 	azx_writel(chip, CORBWP, wp);
+
 	spin_unlock_irq(&chip->reg_lock);
 
 	return 0;