linux-kernel - [PATCH] HDA: Fix sound resume hang

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Date:	Tue, 18 Dec 2012 23:59:33 +0800
From:	Daniel J Blueman <daniel@...ra.org>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Daniel J Blueman <daniel@...ra.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH] HDA: Fix sound resume hang

Resuming a switcheroo'd HDA controller hangs since the completion
is one-shot (thus works the first time). Fix by using completions
that explictly need rearming, so remain fired before.

Signed-off-by: Daniel J Blueman <daniel@...ra.org>
---
 sound/pci/hda/hda_intel.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 22ecadc..e12b939 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2856,7 +2856,7 @@ static int azx_free(struct azx *chip)
 	azx_notifier_unregister(chip);
 
 	chip->init_failed = 1; /* to be sure */
-	complete(&chip->probe_wait);
+	complete_all(&chip->probe_wait);
 
 	if (use_vga_switcheroo(chip)) {
 		if (chip->disabled && chip->bus)
@@ -3482,7 +3482,7 @@ static int __devinit azx_probe(struct pci_dev *pci,
 		pm_runtime_put_noidle(&pci->dev);
 
 	dev++;
-	complete(&chip->probe_wait);
+	complete_all(&chip->probe_wait);
 	return 0;
 
 out_free:
-- 
1.7.10.4

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