@@ -412,6 +412,31 @@ static void drm_mode_rmfb_work_fn(struct work_struct *w)
}
}
+static int drm_mode_closefb(struct drm_framebuffer *fb,
+ struct drm_file *file_priv)
+{
+ struct drm_framebuffer *fbl = NULL;
+ bool found = false;
+
+ mutex_lock(&file_priv->fbs_lock);
+ list_for_each_entry(fbl, &file_priv->fbs, filp_head)
+ if (fb == fbl)
+ found = true;
+
+ if (!found) {
+ mutex_unlock(&file_priv->fbs_lock);
+ return -ENOENT;
+ }
+
+ list_del_init(&fb->filp_head);
+ mutex_unlock(&file_priv->fbs_lock);
+
+ /* Drop the reference that was stored in the fbs list */
+ drm_framebuffer_put(fb);
+
+ return 0;
+}
+
/**
* drm_mode_rmfb - remove an FB from the configuration
* @dev: drm device
@@ -429,8 +454,7 @@ int drm_mode_rmfb(struct drm_device *dev, u32 fb_id,
struct drm_file *file_priv)
{
struct drm_framebuffer *fb = NULL;
- struct drm_framebuffer *fbl = NULL;
- int found = 0;
+ int ret;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EOPNOTSUPP;
@@ -439,23 +463,14 @@ int drm_mode_rmfb(struct drm_device *dev, u32 fb_id,
if (!fb)
return -ENOENT;
- mutex_lock(&file_priv->fbs_lock);
- list_for_each_entry(fbl, &file_priv->fbs, filp_head)
- if (fb == fbl)
- found = 1;
- if (!found) {
- mutex_unlock(&file_priv->fbs_lock);
- goto fail_unref;
+ ret = drm_mode_closefb(fb, file_priv);
+ if (ret != 0) {
+ drm_framebuffer_put(fb);
+ return ret;
}
- list_del_init(&fb->filp_head);
- mutex_unlock(&file_priv->fbs_lock);
-
- /* drop the reference we picked up in framebuffer lookup */
- drm_framebuffer_put(fb);
-
/*
- * we now own the reference that was stored in the fbs list
+ * We now own the reference we picked up in drm_framebuffer_lookup.
*
* drm_framebuffer_remove may fail with -EINTR on pending signals,
* so run this in a separate stack as there's no way to correctly
@@ -475,10 +490,6 @@ int drm_mode_rmfb(struct drm_device *dev, u32 fb_id,
drm_framebuffer_put(fb);
return 0;
-
-fail_unref:
- drm_framebuffer_put(fb);
- return -ENOENT;
}
int drm_mode_rmfb_ioctl(struct drm_device *dev,
drm_mode_rmfb performs two operations: drop the FB from the file_priv->fbs list, and make sure the FB is no longer used on a plane. In the next commit an IOCTL which only does so former will be introduced, so let's split it into a separate function. No functional change, only refactoring. Signed-off-by: Simon Ser <contact@emersion.fr> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Dennis Filder <d.filder@web.de> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Pekka Paalanen <ppaalanen@gmail.com> Cc: Rob Clark <robdclark@gmail.com> Cc: Sean Paul <seanpaul@chromium.org> --- drivers/gpu/drm/drm_framebuffer.c | 51 +++++++++++++++++++------------ 1 file changed, 31 insertions(+), 20 deletions(-)