From: Werner Almesberger <werner@openmoko.org>
Date: Mon, 14 Apr 2008 12:26:44 +0000 (+0200)
Subject: [ALSA] soc - Fix s3c24xx-i2s LR sync while timer ticks are disabled
X-Git-Tag: v2.6.27-rc1~1111^2~144
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=33e5b22285f63ede858c00456f3ffbc2ea79d6cf;p=pandora-kernel.git

[ALSA] soc - Fix s3c24xx-i2s LR sync while timer ticks are disabled

When timer ticks are disabled when calling
sound/soc/s3c24xx/s3c24xx-i2s.c:s3c24xx_snd_lrsync
and the LR signal never happens, we loop forever.
This has been observed in the following call chain:
snd_pcm_common_ioctl1 -> snd_pcm_action_lock_irq ->
snd_pcm_action_single
 -> snd_pcm_do_resume -> soc_pcm_trigger -> s3c24xx_i2s_trigger

The patch below changes the timeout mechanism to use udelay, which
doesn't need timer ticks.

Signed-off-by: Werner Almesberger <werner@openmoko.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---

Reading git-diff-tree failed