| Message ID | 1370015375-5954-1-git-send-email-richard.genoud@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c index 6e6491f..effdb37 100644 --- a/drivers/video/atmel_lcdfb.c +++ b/drivers/video/atmel_lcdfb.c @@ -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
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> --- drivers/video/atmel_lcdfb.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)