Struct bd6107_platform_data refers to a platform device within
the Linux device hierarchy. The test in bd6107_backlight_check_fb()
compares it against the fbdev device in struct fb_info.dev, which
is different. Fix the test by comparing to struct fb_info.device.

Fixes a bug in the backlight driver and prepares fbdev for making
struct fb_info.dev optional.

v2:
	* move renames into separate patch (Javier, Sam, Michael)

Fixes: 67b43e590415 ("backlight: Add ROHM BD6107 backlight driver")
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Lee Jones <lee@kernel.org>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v3.12+
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
---
 drivers/video/backlight/bd6107.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/backlight/bd6107.c b/drivers/video/backlight/bd6107.c
index f4db6c064635b..e3410444ea235 100644
--- a/drivers/video/backlight/bd6107.c
+++ b/drivers/video/backlight/bd6107.c
@@ -104,7 +104,7 @@ static int bd6107_backlight_check_fb(struct backlight_device *backlight,
 {
 	struct bd6107 *bd = bl_get_data(backlight);
 
-	return bd->pdata->fbdev == NULL || bd->pdata->fbdev == info->dev;
+	return bd->pdata->fbdev == NULL || bd->pdata->fbdev == info->device;
 }
 
 static const struct backlight_ops bd6107_backlight_ops = {
-- 
2.41.0

On Tue, 13 Jun 2023, Thomas Zimmermann wrote:

> Struct bd6107_platform_data refers to a platform device within
> the Linux device hierarchy. The test in bd6107_backlight_check_fb()
> compares it against the fbdev device in struct fb_info.dev, which
> is different. Fix the test by comparing to struct fb_info.device.
> 
> Fixes a bug in the backlight driver and prepares fbdev for making
> struct fb_info.dev optional.
> 
> v2:
> 	* move renames into separate patch (Javier, Sam, Michael)
> 
> Fixes: 67b43e590415 ("backlight: Add ROHM BD6107 backlight driver")
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
> Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> Cc: Lee Jones <lee@kernel.org>
> Cc: Daniel Thompson <daniel.thompson@linaro.org>
> Cc: Jingoo Han <jingoohan1@gmail.com>
> Cc: dri-devel@lists.freedesktop.org
> Cc: <stable@vger.kernel.org> # v3.12+
> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
> Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
> ---
>  drivers/video/backlight/bd6107.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Can the Backlight patches be applied without the others and visa versa?

-- 
Lee Jones [李琼斯]

Hi

Am 14.06.23 um 15:51 schrieb Lee Jones:
> On Tue, 13 Jun 2023, Thomas Zimmermann wrote:
> 
>> Struct bd6107_platform_data refers to a platform device within
>> the Linux device hierarchy. The test in bd6107_backlight_check_fb()
>> compares it against the fbdev device in struct fb_info.dev, which
>> is different. Fix the test by comparing to struct fb_info.device.
>>
>> Fixes a bug in the backlight driver and prepares fbdev for making
>> struct fb_info.dev optional.
>>
>> v2:
>> 	* move renames into separate patch (Javier, Sam, Michael)
>>
>> Fixes: 67b43e590415 ("backlight: Add ROHM BD6107 backlight driver")
>> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
>> Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
>> Cc: Lee Jones <lee@kernel.org>
>> Cc: Daniel Thompson <daniel.thompson@linaro.org>
>> Cc: Jingoo Han <jingoohan1@gmail.com>
>> Cc: dri-devel@lists.freedesktop.org
>> Cc: <stable@vger.kernel.org> # v3.12+
>> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
>> Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
>> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
>> ---
>>   drivers/video/backlight/bd6107.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> Can the Backlight patches be applied without the others and visa versa?

Unfortunately not. The rest of the series requires the backlight patches.

Best regards
Thomas

> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)

Hi Lee

Am 14.06.23 um 16:13 schrieb Thomas Zimmermann:
[...]
>> Can the Backlight patches be applied without the others and visa versa?
> 
> Unfortunately not. The rest of the series requires the backlight patches.

Are you OK with the patches going through drm?

Best regards
Thomas

> 
> Best regards
> Thomas
> 
>>
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)

On Fri, 16 Jun 2023, Thomas Zimmermann wrote:

> Hi Lee
> 
> Am 14.06.23 um 16:13 schrieb Thomas Zimmermann:
> [...]
> > > Can the Backlight patches be applied without the others and visa versa?
> > 
> > Unfortunately not. The rest of the series requires the backlight patches.
> 
> Are you OK with the patches going through drm?

Shouldn't be an issue.

Please ensure my Ack is added to each patch, even if you have to RESEND.

-- 
Lee Jones [李琼斯]

Am 19.06.23 um 10:31 schrieb Lee Jones:
> On Fri, 16 Jun 2023, Thomas Zimmermann wrote:
> 
>> Hi Lee
>>
>> Am 14.06.23 um 16:13 schrieb Thomas Zimmermann:
>> [...]
>>>> Can the Backlight patches be applied without the others and visa versa?
>>>
>>> Unfortunately not. The rest of the series requires the backlight patches.
>>
>> Are you OK with the patches going through drm?
> 
> Shouldn't be an issue.
> 
> Please ensure my Ack is added to each patch, even if you have to RESEND.
> 

Thank you so much.

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)