[v3,18/18] fbdev: Document that framebuffer_alloc() returns zero'ed data

[Sui JIngfeng]

On 2023/7/14 15:49, Thomas Zimmermann wrote:
> Most fbdev drivers depend on framebuffer_alloc() to initialize the
> allocated memory to 0. Document this guarantee.
>
> v3:
> 	* slightly reword the sentence (Miguel)
>
> Suggested-by: Miguel Ojeda <ojeda at kernel.org>
> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
> Reviewed-by: Miguel Ojeda <ojeda at kernel.org>

Reviewed-by: Sui Jingfeng <suijingfeng at loongson.cn>

> Cc: Helge Deller <deller at gmx.de>
> ---
>   drivers/video/fbdev/core/fb_info.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/video/fbdev/core/fb_info.c b/drivers/video/fbdev/core/fb_info.c
> index 8bdbefdd4b70..4847ebe50d7d 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). The new instances of struct fb_info and
> + * the driver private data are both cleared to zero.
>    *
>    * Returns the new structure, or NULL if an error occurred.
>    *