diff mbox series

[v3,04/12] video: fbdev: uvesafb: modify the static fb_ops directly

Message ID af63cda5de9fee3acd28e7d264f920338298bc0a.1575390740.git.jani.nikula@intel.com (mailing list archive)
State New, archived
Headers show
Series video, drm, etc: constify fbops in struct fb_info | expand

Commit Message

Jani Nikula Dec. 3, 2019, 4:38 p.m. UTC
Avoid modifying the fb_ops via info->fbops to let us make the pointer
const in the future.

Cc: linux-fbdev@vger.kernel.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/video/fbdev/uvesafb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Daniel Vetter Dec. 3, 2019, 5:03 p.m. UTC | #1
On Tue, Dec 03, 2019 at 06:38:46PM +0200, Jani Nikula wrote:
> Avoid modifying the fb_ops via info->fbops to let us make the pointer
> const in the future.
> 
> Cc: linux-fbdev@vger.kernel.org
> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
> ---
>  drivers/video/fbdev/uvesafb.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
> index 439565cae7ab..53d08d1b56f5 100644
> --- a/drivers/video/fbdev/uvesafb.c
> +++ b/drivers/video/fbdev/uvesafb.c
> @@ -1440,7 +1440,7 @@ static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
>  
>  	/* Disable blanking if the user requested so. */
>  	if (!blank)
> -		info->fbops->fb_blank = NULL;
> +		uvesafb_ops.fb_blank = NULL;
>  
>  	/*
>  	 * Find out how much IO memory is required for the mode with
> @@ -1510,7 +1510,7 @@ static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
>  			(par->ypan ? FBINFO_HWACCEL_YPAN : 0);
>  
>  	if (!par->ypan)
> -		info->fbops->fb_pan_display = NULL;
> +		uvesafb_ops.fb_pan_display = NULL;
>  }

I read code.

I cried.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Also, with more reading and more bad dreams I'll get about this, I'm
revising my take on patches 1&2 in this series. On those also

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

as-is.

Cheers, Daniel
>  
>  static void uvesafb_init_mtrr(struct fb_info *info)
> -- 
> 2.20.1
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
Jani Nikula Dec. 4, 2019, 6:31 a.m. UTC | #2
On Tue, 03 Dec 2019, Daniel Vetter <daniel@ffwll.ch> wrote:
> On Tue, Dec 03, 2019 at 06:38:46PM +0200, Jani Nikula wrote:
>> Avoid modifying the fb_ops via info->fbops to let us make the pointer
>> const in the future.
>> 
>> Cc: linux-fbdev@vger.kernel.org
>> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
>> ---
>>  drivers/video/fbdev/uvesafb.c | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>> 
>> diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
>> index 439565cae7ab..53d08d1b56f5 100644
>> --- a/drivers/video/fbdev/uvesafb.c
>> +++ b/drivers/video/fbdev/uvesafb.c
>> @@ -1440,7 +1440,7 @@ static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
>>  
>>  	/* Disable blanking if the user requested so. */
>>  	if (!blank)
>> -		info->fbops->fb_blank = NULL;
>> +		uvesafb_ops.fb_blank = NULL;
>>  
>>  	/*
>>  	 * Find out how much IO memory is required for the mode with
>> @@ -1510,7 +1510,7 @@ static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
>>  			(par->ypan ? FBINFO_HWACCEL_YPAN : 0);
>>  
>>  	if (!par->ypan)
>> -		info->fbops->fb_pan_display = NULL;
>> +		uvesafb_ops.fb_pan_display = NULL;
>>  }
>
> I read code.
>
> I cried.
>
> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>
> Also, with more reading and more bad dreams I'll get about this, I'm
> revising my take on patches 1&2 in this series. On those also
>
> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>
> as-is.

Thanks. I feel you.

And remember, all I ever wanted to do was

-static struct fb_ops intelfb_ops = {
+static const struct fb_ops intelfb_ops = {

in drivers/gpu/drm/i915/display/intel_fbdev.c.


BR,
Jani.


>
> Cheers, Daniel
>>  
>>  static void uvesafb_init_mtrr(struct fb_info *info)
>> -- 
>> 2.20.1
>> 
>> _______________________________________________
>> Intel-gfx mailing list
>> Intel-gfx@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
diff mbox series

Patch

diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
index 439565cae7ab..53d08d1b56f5 100644
--- a/drivers/video/fbdev/uvesafb.c
+++ b/drivers/video/fbdev/uvesafb.c
@@ -1440,7 +1440,7 @@  static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
 
 	/* Disable blanking if the user requested so. */
 	if (!blank)
-		info->fbops->fb_blank = NULL;
+		uvesafb_ops.fb_blank = NULL;
 
 	/*
 	 * Find out how much IO memory is required for the mode with
@@ -1510,7 +1510,7 @@  static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
 			(par->ypan ? FBINFO_HWACCEL_YPAN : 0);
 
 	if (!par->ypan)
-		info->fbops->fb_pan_display = NULL;
+		uvesafb_ops.fb_pan_display = NULL;
 }
 
 static void uvesafb_init_mtrr(struct fb_info *info)