On 6/16/23 02:31, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
>
> The function is only defined if CONFIG_PROC_FS is enabled:
>
> ld.lld: error: undefined symbol: i915_drm_client_fdinfo
>>>> referenced by i915_driver.c
>>>> drivers/gpu/drm/i915/i915_driver.o:(i915_drm_driver) in archive vmlinux.a
>
> Use the PTR_IF() helper to make the reference NULL otherwise.
>
> Fixes: e894b724c316d ("drm/i915: Use the fdinfo helper")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Tested-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> # build-tested
Thanks.
> ---
> drivers/gpu/drm/i915/i915_driver.c | 2 +-
> drivers/gpu/drm/i915/i915_drm_client.h | 2 --
> 2 files changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
> index 75cbc43b326dd..0ad0c5885ec27 100644
> --- a/drivers/gpu/drm/i915/i915_driver.c
> +++ b/drivers/gpu/drm/i915/i915_driver.c
> @@ -1816,7 +1816,7 @@ static const struct drm_driver i915_drm_driver = {
> .open = i915_driver_open,
> .lastclose = i915_driver_lastclose,
> .postclose = i915_driver_postclose,
> - .show_fdinfo = i915_drm_client_fdinfo,
> + .show_fdinfo = PTR_IF(IS_ENABLED(CONFIG_PROC_FS), i915_drm_client_fdinfo),
>
> .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
> .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> diff --git a/drivers/gpu/drm/i915/i915_drm_client.h b/drivers/gpu/drm/i915/i915_drm_client.h
> index 4c18b99e10a4e..67816c912bca1 100644
> --- a/drivers/gpu/drm/i915/i915_drm_client.h
> +++ b/drivers/gpu/drm/i915/i915_drm_client.h
> @@ -47,8 +47,6 @@ static inline void i915_drm_client_put(struct i915_drm_client *client)
>
> struct i915_drm_client *i915_drm_client_alloc(void);
>
> -#ifdef CONFIG_PROC_FS
> void i915_drm_client_fdinfo(struct drm_printer *p, struct drm_file *file);
> -#endif
>
> #endif /* !__I915_DRM_CLIENT_H__ */
--
~Randy
