[66/74] imxfb: correct location of callbacks in suspend and resume

From: Greg KH
Date: Thu Feb 04 2010 - 12:25:50 EST


2.6.32-stable review patch. If anyone has any objections, please let us know.

------------------

From: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>

commit 1ec562035ba64e724652cb12b8a770b3906e9bf5 upstream.

The probe function passes a pointer to a struct fb_info to
platform_set_drvdata(), so don't interpret the return value of
platform_get_drvdata() as a pointer to struct imxfb_info.

The original imxfb_info *fbi backlight_power was NULL but in imxfb_suspend
it was 4 resulting in an oops as imxfb_suspend calls
imxfb_disable_controller(fbi) which in turn has

if (fbi->backlight_power)
fbi->backlight_power(0);

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Acked-by: Sascha Hauer <kernel@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
drivers/video/imxfb.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -593,7 +593,8 @@ static int imxfb_activate_var(struct fb_
*/
static int imxfb_suspend(struct platform_device *dev, pm_message_t state)
{
- struct imxfb_info *fbi = platform_get_drvdata(dev);
+ struct fb_info *info = platform_get_drvdata(dev);
+ struct imxfb_info *fbi = info->par;

pr_debug("%s\n", __func__);

@@ -603,7 +604,8 @@ static int imxfb_suspend(struct platform

static int imxfb_resume(struct platform_device *dev)
{
- struct imxfb_info *fbi = platform_get_drvdata(dev);
+ struct fb_info *info = platform_get_drvdata(dev);
+ struct imxfb_info *fbi = info->par;

pr_debug("%s\n", __func__);



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