diff mbox series

[v2,18/18] fbdev: Document that framebuffer_alloc() returns zero'ed data

Message ID 20230713130338.31086-19-tzimmermann@suse.de
State New
Headers show
Series fbdev: Remove FBINFO_DEFAULT and FBINFO_FLAG_DEFAULT flags | expand

Commit Message

Thomas Zimmermann July 13, 2023, 12:58 p.m. UTC
Most fbdev drivers depend on framebuffer_alloc() to initialize the
allocated memory to 0. Document this guarantee.

Suggested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Helge Deller <deller@gmx.de>
---
 drivers/video/fbdev/core/fb_info.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Randy Dunlap July 13, 2023, 4:02 p.m. UTC | #1
On 7/13/23 06:21, Miguel Ojeda wrote:
> On Thu, Jul 13, 2023 at 3:03 PM Thomas Zimmermann <tzimmermann@suse.de> wrote:
>>
>> Most fbdev drivers depend on framebuffer_alloc() to initialize the
>> allocated memory to 0. Document this guarantee.
>>
>> Suggested-by: Miguel Ojeda <ojeda@kernel.org>
>> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
>> Cc: Helge Deller <deller@gmx.de>
> 
> Thanks for sending this! Maybe this would be best earlier in the
> series, so that later patches make more sense (since they use the
> guarantee), but it is not a big deal.
> 
>> + * aligned to sizeof(long). Both, the instance of struct fb_info and
>> + * the driver private data, are cleared to zero.
> 
> I think both commas may be best omitted (but I am not a native speaker).

Yes, it would be better to omit them.

> Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
> 
> Cheers,
> Miguel
diff mbox series

Patch

diff --git a/drivers/video/fbdev/core/fb_info.c b/drivers/video/fbdev/core/fb_info.c
index 8bdbefdd4b70..1b7615fc393d 100644
--- a/drivers/video/fbdev/core/fb_info.c
+++ b/drivers/video/fbdev/core/fb_info.c
@@ -13,7 +13,8 @@ 
  *
  * Creates a new frame buffer info structure. Also reserves @size bytes
  * for driver private data (info->par). info->par (if any) will be
- * aligned to sizeof(long).
+ * aligned to sizeof(long). Both, the instance of struct fb_info and
+ * the driver private data, are cleared to zero.
  *
  * Returns the new structure, or NULL if an error occurred.
  *