# Re: \[PATCH v2 7/8\] video: mark nuc900fb\_map\_video\_memory as \_\_devinit

- From: Florian Tobias Schandinat \<FlorianSchandinat@gmx.de\>
- Date: 2012-10-10 12:36:17 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2012/10/3937105
- Thread: https://ratatoskr.run/linux-arm-kernel/2012/10/3936815/t.md

```text
On 10/09/2012 08:13 PM, Arnd Bergmann wrote:
> nuc900fb_map_video_memory is called by an devinit function
> that may be called at run-time, but the function itself is
> marked __init and will be discarded after boot.
> 
> To avoid calling into a function that may have been overwritten,
> mark nuc900fb_map_video_memory itself as __devinit.
> 
> Without this patch, building nuc950_defconfig results in:
> 
> WARNING: drivers/video/built-in.o(.devinit.text+0x26c): Section mismatch in reference from the function nuc900fb_probe() to the function .init.text:nuc900fb_map_video_memory()
> The function __devinit nuc900fb_probe() references
> a function __init nuc900fb_map_video_memory().
> If nuc900fb_map_video_memory is only used by nuc900fb_probe then
> annotate nuc900fb_map_video_memory with a matching annotation.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> Cc: Wan ZongShun <redacted>
> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
> Cc: <redacted>

Applied.


Thanks,

Florian Tobias Schandinat

> ---
>  drivers/video/nuc900fb.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/video/nuc900fb.c b/drivers/video/nuc900fb.c
> index e10f551..b31b12b 100644
> --- a/drivers/video/nuc900fb.c
> +++ b/drivers/video/nuc900fb.c
> @@ -387,7 +387,7 @@ static int nuc900fb_init_registers(struct fb_info *info)
>   *    The buffer should be a non-cached, non-buffered, memory region
>   *    to allow palette and pixel writes without flushing the cache.
>   */
> -static int __init nuc900fb_map_video_memory(struct fb_info *info)
> +static int __devinit nuc900fb_map_video_memory(struct fb_info *info)
>  {
>  	struct nuc900fb_info *fbi = info->par;
>  	dma_addr_t map_dma;

```