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atmel_lcdfb: blank the backlight on remove 

When removing atmel_lcdfb module, the backlight is unregistered but not
blanked. (only for CONFIG_BACKLIGHT_ATMEL_LCDC case).
This can result in the screen going full white depending on how the PWM
is wired.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
This commit is contained in:
Richard Genoud 2013-05-31 15:49:35 +00:00 committed by Jean-Christophe PLAGNIOL-VILLARD
parent 65ac057bce
commit 56c21b53ab
1 changed files with 8 additions and 2 deletions
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10
drivers/video/atmel_lcdfb.c
View File

@ -223,8 +223,14 @@ static void init_backlight(struct atmel_lcdfb_info *sinfo)
static void exit_backlight(struct atmel_lcdfb_info *sinfo)
{
if (sinfo->backlight)
backlight_device_unregister(sinfo->backlight);
if (!sinfo->backlight)
return;
if (sinfo->backlight->ops) {
sinfo->backlight->props.power = FB_BLANK_POWERDOWN;
sinfo->backlight->ops->update_status(sinfo->backlight);
}
backlight_device_unregister(sinfo->backlight);
}
#else