drm: Add DRM_GEM_FOPS

The DEFINE_DRM_GEM_FOPS() helper is a bit limiting if a driver wants to
provide additional file ops, like show_fdinfo().

v2: Split out DRM_GEM_FOPS instead of making DEFINE_DRM_GEM_FOPS
    varardic
v3: nits

Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Patchwork: https://patchwork.freedesktop.org/patch/488904/
Link: https://lore.kernel.org/r/20220609174213.2265938-1-robdclark@gmail.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index 9d7c61a122dc4d6970c6ba23943702cc1c6e0953..87cffc9efa85500947d53364600524b7ea5a14bb 100644 (file)
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -314,6 +314,23 @@ struct drm_gem_object {
        const struct drm_gem_object_funcs *funcs;
 };
 
+/**
+ * DRM_GEM_FOPS - Default drm GEM file operations
+ *
+ * This macro provides a shorthand for setting the GEM file ops in the
+ * &file_operations structure.  If all you need are the default ops, use
+ * DEFINE_DRM_GEM_FOPS instead.
+ */
+#define DRM_GEM_FOPS \
+       .open           = drm_open,\
+       .release        = drm_release,\
+       .unlocked_ioctl = drm_ioctl,\
+       .compat_ioctl   = drm_compat_ioctl,\
+       .poll           = drm_poll,\
+       .read           = drm_read,\
+       .llseek         = noop_llseek,\
+       .mmap           = drm_gem_mmap
+
 /**
  * DEFINE_DRM_GEM_FOPS() - macro to generate file operations for GEM drivers
  * @name: name for the generated structure
@@ -330,14 +347,7 @@ struct drm_gem_object {
 #define DEFINE_DRM_GEM_FOPS(name) \
        static const struct file_operations name = {\
                .owner          = THIS_MODULE,\
-               .open           = drm_open,\
-               .release        = drm_release,\
-               .unlocked_ioctl = drm_ioctl,\
-               .compat_ioctl   = drm_compat_ioctl,\
-               .poll           = drm_poll,\
-               .read           = drm_read,\
-               .llseek         = noop_llseek,\
-               .mmap           = drm_gem_mmap,\
+               DRM_GEM_FOPS,\
        }
 
 void drm_gem_object_release(struct drm_gem_object *obj);