[PATCH] drm: Fix missing kernel-doc parameter descriptions in drm_gem_shmem_init()

[Kriish Sharma]

The kernel test robot reported missing parameter documentation in
drm_gem_shmem_init(), triggering warnings during documentation builds:

WARNING: ./drivers/gpu/drm/drm_gem_shmem_helper.c:104 function parameter 'shmem' not described in 'drm_gem_shmem_init'
WARNING: ./drivers/gpu/drm/drm_gem_shmem_helper.c:104 function parameter 'size' not described in 'drm_gem_shmem_init'

Add missing @shmem and @size descriptions to fix the kernel-doc issues
and ensure the documentation is complete

Fixes: e3f4bdaf2c5b ("drm/gem/shmem: Extract drm_gem_shmem_init() from drm_gem_shmem_create()")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202508040518.ZISc9nPg-lkp@xxxxxxxxx
Signed-off-by: Kriish Sharma <kriish.sharma2006@xxxxxxxxx>
---
 drivers/gpu/drm/drm_gem_shmem_helper.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index dc94a27710e5..1d1e8add99c9 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -96,7 +96,8 @@ static int __drm_gem_shmem_init(struct drm_device *dev, struct drm_gem_shmem_obj
 /**
  * drm_gem_shmem_init - Initialize an allocated object.
  * @dev: DRM device
- * @obj: The allocated shmem GEM object.
+ * @shmem: shmem GEM object
+ * @size: Size of the object to initialize
  *
  * Returns:
  * 0 on success, or a negative error code on failure.
-- 
2.34.1