drm_fb_get_bpp_depth is to be used by legacy drivers only. None of those
support multi-planar formats, so add a WARN_ON if this function is ever
called with a format with more than one plane.
Suggested-by: Daniel Vetter <daniel@xxxxxxxx>
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_crtc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 6112a20..4c5f7d3 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -5186,6 +5186,12 @@ int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
int *bpp)
{
+ /*
+ * This function is to be used for legacy drivers only, no new formats
+ * formats should be added here.
+ */
+ WARN_ON(drm_format_num_planes(format) != 1);
+
switch (format) {
case DRM_FORMAT_C8:
case DRM_FORMAT_RGB332:
--
2.1.4
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