Re: [PATCH] drm/i915: make i915_drm_client_fdinfo() reference conditional again

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On 16/06/2023 11:16, Andi Shyti wrote:
Hi Arnd,

On Fri, Jun 16, 2023 at 11:31:47AM +0200, 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>
---
  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

nice! This is becoming the new trend now.

Reviewed-by: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>

Thanks for the fix and review! (And I got to learn about existence of PTR_IF too.)

Andi will you merge once green or should I?

Regards,

Tvrtko



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