>From 90380fbb9865dda45a5be8085ef556f3ce203244 Mon Sep 17 00:00:00 2001
From: Maxim Levitsky <maximlevitsky@xxxxxxxxx>
Date: Mon, 3 Sep 2007 14:01:52 +0300
Subject: [PATCH] fix a race in dynamic power managment
codec->power_transition is supposed to be true while codec is going to be shut off
if in the mean time somebody calls snd_hda_power_up, hda_power_work will not shut down the codec,
but nether will clear codec->power_transition, thus it stays on forever. Fix this
Signed-off-by: Maxim Levitsky <maximlevitsky@xxxxxxxxx>
---
pci/hda/hda_codec.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/pci/hda/hda_codec.c b/pci/hda/hda_codec.c
index 46d4253..08104e2 100644
--- a/pci/hda/hda_codec.c
+++ b/pci/hda/hda_codec.c
@@ -2195,8 +2195,10 @@ static void hda_power_work(struct work_struct *work)
struct hda_codec *codec =
container_of(work, struct hda_codec, power_work.work);
- if (!codec->power_on || codec->power_count)
+ if (!codec->power_on || codec->power_count) {
+ codec->power_transition = 0;
return;
+ }
hda_call_codec_suspend(codec);
if (codec->bus->ops.pm_notify)
--
1.5.2.3
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