Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=acec30...
Commit: acec30ffffe1eee07e3202cff03e7ca8350d250f
Parent: 109c53f840e551d6e99ecfd8b0131a968332c89f
Author: Pavel Hofman <dustin@seznam.cz>
AuthorDate: Mon Dec 3 12:37:17 2007 +0100
Committer: Jaroslav Kysela <perex@perex.cz>
CommitDate: Thu Jan 31 17:29:30 2008 +0100
[ALSA] I2C fix for ice1724
adding i2c busy wait before sending device address to prevent reading
bogus data.
Signed-off-by: Pavel Hofman <dustin@seznam.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
sound/pci/ice1712/ice1724.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/sound/pci/ice1712/ice1724.c b/sound/pci/ice1712/ice1724.c
index 357bdbe..b7a1d93 100644
--- a/sound/pci/ice1712/ice1724.c
+++ b/sound/pci/ice1712/ice1724.c
@@ -1958,6 +1958,7 @@ unsigned char snd_vt1724_read_i2c(struct snd_ice1712 *ice,
unsigned char val;
mutex_lock(&ice->i2c_mutex);
+ wait_i2c_busy(ice);
outb(addr, ICEREG1724(ice, I2C_BYTE_ADDR));
outb(dev & ~VT1724_I2C_WRITE, ICEREG1724(ice, I2C_DEV_ADDR));
wait_i2c_busy(ice);
-
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