Signed-off-by: Carlos Eduardo Gallo Filho <gcar...@disroot.org>
---
drivers/gpu/drm/drm_framebuffer.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_framebuffer.c
b/drivers/gpu/drm/drm_framebuffer.c
index aff3746dedfb..49df3ca3b3ee 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -73,6 +73,21 @@
* drm_framebuffer.
*/
+/**
+ * drm_framebuffer_check_src_coords - check if the source with given
+ * coordinates and sizes is inside the framebuffer
+ * @src_x: source x coordinate
+ * @src_y: source y coordinate
+ * @src_w: source width
+ * @src_h: source height
+ * @fb: pointer to the framebuffer to check
+ *
+ * This function checks if an object with the given set of coordinates and
+ * sizes fits inside the framebuffer by looking at its size.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
int drm_framebuffer_check_src_coords(uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h,
const struct drm_framebuffer *fb)
@@ -82,7 +97,6 @@ int drm_framebuffer_check_src_coords(uint32_t src_x, uint32_t
src_y,
fb_width = fb->width << 16;
fb_height = fb->height << 16;
- /* Make sure source coordinates are inside the fb. */
if (src_w > fb_width ||
src_x > fb_width - src_w ||
src_h > fb_height ||
--
2.41.0
