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Message-Id: <1370010519-18691-2-git-send-email-richard.genoud@gmail.com>
Date: Fri, 31 May 2013 16:28:39 +0200
From: Richard Genoud <richard.genoud@...il.com>
To: Nicolas Ferre <nicolas.ferre@...el.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
Tomi Valkeinen <tomi.valkeinen@...com>,
linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
Richard Genoud <richard.genoud@...il.com>
Subject: [PATCH 2/2] 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@...il.com>
---
drivers/video/atmel_lcdfb.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index 6e6491f..e00318f 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -223,8 +223,13 @@ static void init_backlight(struct atmel_lcdfb_info *sinfo)
static void exit_backlight(struct atmel_lcdfb_info *sinfo)
{
- if (sinfo->backlight)
+ if (sinfo->backlight) {
+ if (sinfo->backlight->ops) {
+ sinfo->backlight->props.power = FB_BLANK_POWERDOWN;
+ sinfo->backlight->ops->update_status(sinfo->backlight);
+ }
backlight_device_unregister(sinfo->backlight);
+ }
}
#else
--
1.7.10.4
--
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