This is a note to let you know that I've just added the patch titled
ASoC: Remove volatility from WM8900 POWER1 register
to the 2.6.36-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-remove-volatility-from-wm8900-power1-register.patch
and it can be found in the queue-2.6.36 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 6d212d8e86fb4221bd91b9266b7567ee2b83bd01 Mon Sep 17 00:00:00 2001
From: Mark Brown <[email protected]>
Date: Fri, 29 Oct 2010 15:41:17 -0700
Subject: ASoC: Remove volatility from WM8900 POWER1 register
From: Mark Brown <[email protected]>
commit 6d212d8e86fb4221bd91b9266b7567ee2b83bd01 upstream.
Not all bits can be read back from POWER1 so avoid corruption when using
a read/modify/write cycle by marking it non-volatile - the only thing we
read back from it is the chip revision which has diagnostic value only.
We can re-add later but that's a more invasive change than is suitable
for a bugfix.
Signed-off-by: Mark Brown <[email protected]>
Acked-by: Liam Girdwood <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
sound/soc/codecs/wm8900.c | 6 ------
1 file changed, 6 deletions(-)
--- a/sound/soc/codecs/wm8900.c
+++ b/sound/soc/codecs/wm8900.c
@@ -188,7 +188,6 @@ static int wm8900_volatile_register(unsi
{
switch (reg) {
case WM8900_REG_ID:
- case WM8900_REG_POWER1:
return 1;
default:
return 0;
@@ -1236,11 +1235,6 @@ static __devinit int wm8900_i2c_probe(st
goto err;
}
- /* Read back from the chip */
- reg = snd_soc_read(codec, WM8900_REG_POWER1);
- reg = (reg >> 12) & 0xf;
- dev_info(&i2c->dev, "WM8900 revision %d\n", reg);
-
wm8900_reset(codec);
/* Turn the chip on */
Patches currently in stable-queue which might be from
[email protected] are
queue-2.6.36/asoc-wm8961-clear-wm8961_mclkdiv-bit-for-freq-16500000.patch
queue-2.6.36/asoc-remove-volatility-from-wm8900-power1-register.patch
queue-2.6.36/asoc-wm8961-clear-wm8961_dacslope-bit-for-normal-mode.patch
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