This is a note to let you know that I've just added the patch titled
drm/radeon: only add the mm i2c bus if the hw_i2c module param is set
to the 3.0-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:
drm-radeon-only-add-the-mm-i2c-bus-if-the-hw_i2c-module-param-is-set.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 46783150a6552f9513f08e62cfcc07125d6e502b Mon Sep 17 00:00:00 2001
From: Alex Deucher <[email protected]>
Date: Tue, 10 Apr 2012 12:14:27 -0400
Subject: drm/radeon: only add the mm i2c bus if the hw_i2c module param is set
From: Alex Deucher <[email protected]>
commit 46783150a6552f9513f08e62cfcc07125d6e502b upstream.
It seems it can corrupt the monitor EDID in certain cases on certain
boards when running sensors detect. It's rarely used anyway outside
of AIW boards.
http://lists.lm-sensors.org/pipermail/lm-sensors/2012-April/035847.html
http://lists.freedesktop.org/archives/xorg/2011-January/052239.html
Signed-off-by: Alex Deucher <[email protected]>
Acked-by: Jean Delvare <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/radeon/radeon_i2c.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/radeon/radeon_i2c.c
+++ b/drivers/gpu/drm/radeon/radeon_i2c.c
@@ -898,6 +898,10 @@ struct radeon_i2c_chan *radeon_i2c_creat
struct radeon_i2c_chan *i2c;
int ret;
+ /* don't add the mm_i2c bus unless hw_i2c is enabled */
+ if (rec->mm_i2c && (radeon_hw_i2c == 0))
+ return NULL;
+
i2c = kzalloc(sizeof(struct radeon_i2c_chan), GFP_KERNEL);
if (i2c == NULL)
return NULL;
Patches currently in stable-queue which might be from [email protected]
are
queue-3.0/drm-radeon-only-add-the-mm-i2c-bus-if-the-hw_i2c-module-param-is-set.patch
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