# \[PATCH\] video: fbdev: pvr2fb: fix compile-testing as module

- Subsystems: FRAMEBUFFER LAYER, THE REST
- Maintainers: Helge Deller, Linus Torvalds
- List: linux-fbdev
- 3 messages, 2 authors
- Page: https://ratatoskr.run/linux-fbdev/2019/06/5630784/t

## \[PATCH\] video: fbdev: pvr2fb: fix compile-testing as module

- From: Arnd Bergmann \<arnd@arndb.de\>
- Date: 2019-06-17 12:48:25 
- Message: https://ratatoskr.run/linux-fbdev/2019/06/5630784.md

```text
Building an allmodconfig kernel now produces a harmless warning:

drivers/video/fbdev/pvr2fb.c:726:12: error: unused function 'pvr2_get_param_val' [-Werror,-Wunused-function]

Shut this up the same way as we do for other unused functions
in the same file, using the __maybe_unused attribute.

Fixes: 0f5a5712ad1e ("video: fbdev: pvr2fb: add COMPILE_TEST support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/video/fbdev/pvr2fb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/fbdev/pvr2fb.c b/drivers/video/fbdev/pvr2fb.c
index 59c59b3a67cb..cf9cfdc5e685 100644
--- a/drivers/video/fbdev/pvr2fb.c
+++ b/drivers/video/fbdev/pvr2fb.c
@@ -723,8 +723,8 @@ static struct fb_ops pvr2fb_ops = {
 	.fb_imageblit	= cfb_imageblit,
 };
 
-static int pvr2_get_param_val(const struct pvr2_params *p, const char *s,
-			      int size)
+static int __maybe_unused pvr2_get_param_val(const struct pvr2_params *p,
+					     const char *s, int size)
 {
 	int i;
 
-- 
2.20.0
```

## Re: \[PATCH\] video: fbdev: pvr2fb: fix compile-testing as module

- From: Bartlomiej Zolnierkiewicz \<hidden\>
- Date: 2019-06-21 11:15:08 
- Message: https://ratatoskr.run/linux-fbdev/2019/06/5635995.md

```text

On 6/17/19 2:47 PM, Arnd Bergmann wrote:
> Building an allmodconfig kernel now produces a harmless warning:
> 
> drivers/video/fbdev/pvr2fb.c:726:12: error: unused function 'pvr2_get_param_val' [-Werror,-Wunused-function]
> 
> Shut this up the same way as we do for other unused functions
> in the same file, using the __maybe_unused attribute.
> 
> Fixes: 0f5a5712ad1e ("video: fbdev: pvr2fb: add COMPILE_TEST support")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Thanks but I've fixed it already by adding #ifndef MODULE (since other
functions in the same file using __maybe_unused depend on either PCI or
SH_DREAMCAST I've preferred not to use this attribute):

https://marc.info/?l=linux-fbdev&m6050904010778&w=2

> ---
>  drivers/video/fbdev/pvr2fb.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/video/fbdev/pvr2fb.c b/drivers/video/fbdev/pvr2fb.c
> index 59c59b3a67cb..cf9cfdc5e685 100644
> --- a/drivers/video/fbdev/pvr2fb.c
> +++ b/drivers/video/fbdev/pvr2fb.c
> @@ -723,8 +723,8 @@ static struct fb_ops pvr2fb_ops = {
>  	.fb_imageblit	= cfb_imageblit,
>  };
>  
> -static int pvr2_get_param_val(const struct pvr2_params *p, const char *s,
> -			      int size)
> +static int __maybe_unused pvr2_get_param_val(const struct pvr2_params *p,
> +					     const char *s, int size)
>  {
>  	int i;

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics
```

## Re: \[PATCH\] video: fbdev: pvr2fb: fix compile-testing as module

- From: Arnd Bergmann \<arnd@arndb.de\>
- Date: 2019-06-21 14:22:25 
- Message: https://ratatoskr.run/linux-fbdev/2019/06/5636179.md

```text
On Fri, Jun 21, 2019 at 1:15 PM Bartlomiej Zolnierkiewicz
[ref] wrote:
>
>
> On 6/17/19 2:47 PM, Arnd Bergmann wrote:
> > Building an allmodconfig kernel now produces a harmless warning:
> >
> > drivers/video/fbdev/pvr2fb.c:726:12: error: unused function 'pvr2_get_param_val' [-Werror,-Wunused-function]
> >
> > Shut this up the same way as we do for other unused functions
> > in the same file, using the __maybe_unused attribute.
> >
> > Fixes: 0f5a5712ad1e ("video: fbdev: pvr2fb: add COMPILE_TEST support")
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>
> Thanks but I've fixed it already by adding #ifndef MODULE (since other
> functions in the same file using __maybe_unused depend on either PCI or
> SH_DREAMCAST I've preferred not to use this attribute):
>
> https://marc.info/?l=linux-fbdev&m6050904010778&w=2

Ok, dropping my patch from the local queue, your version is obviously
correct as well.

      Arnd
```