From: Sasha Khapyorsky <sashak@smlink.com>
Date: Thu, 7 Apr 2005 18:21:21 +0000 (+0200)
Subject: [ALSA] Fix 'semaphore is not ready' problem with snd-intel8x0m
X-Git-Tag: v2.6.13-rc1~68^2~707
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c56c47f678b0388290686d5a0988d8806ffe5cc;p=linux-2.6

[ALSA] Fix 'semaphore is not ready' problem with snd-intel8x0m

Intel8x0-modem driver
With some intel based ac97 modems codec access semaphore is not cleared
after 0x54 AC97 register (GPIO_STATUS) reads. This may causes problems
with newly applied modem mixer (Off-hook switch) and in other cases.

Signed-off-by: Sasha Khapyorsky <sashak@smlink.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/pci/intel8x0m.c b/sound/pci/intel8x0m.c
index 67da096d65..f9972b2005 100644
--- a/sound/pci/intel8x0m.c
+++ b/sound/pci/intel8x0m.c
@@ -500,6 +500,8 @@ static unsigned short snd_intel8x0_codec_read(ac97_t *ac97,
 			res = 0xffff;
 		}
 	}
+	if (reg == AC97_GPIO_STATUS)
+		iagetword(chip, 0); /* clear semaphore */
 	return res;
 }