linux-kernel - Re: [PATCH 2/2] atmel_lcdfb: blank the backlight on remove

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Message-ID: <20130531151926.GR19468@game.jcrosoft.org>
Date:	Fri, 31 May 2013 17:19:26 +0200
From:	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
To:	Richard Genoud <richard.genoud@...il.com>
Cc:	Nicolas Ferre <nicolas.ferre@...el.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] atmel_lcdfb: blank the backlight on remove

On 16:28 Fri 31 May     , Richard Genoud wrote:
> 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)
	return;

	other look ok 

if you want ot hte next RC you have 3h to send a v2 before I work off for few
days

Best Regards,
J.
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