From: Sean Paul seanpaul@chromium.org
I ran across this last week when I was trying to get this function to work. It's useful to have the scale values in the log upon failure.
Signed-off-by: Sean Paul seanpaul@chromium.org --- drivers/gpu/drm/drm_atomic_helper.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 2c23a48482da..1725546d5105 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -758,7 +758,8 @@ int drm_atomic_helper_check_plane_state(struct drm_plane_state *plane_state, hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale); vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale); if (hscale < 0 || vscale < 0) { - DRM_DEBUG_KMS("Invalid scaling of plane\n"); + DRM_DEBUG_KMS("Invalid scaling of plane (%d/%d)\n", + hscale, vscale); drm_rect_debug_print("src: ", &plane_state->src, true); drm_rect_debug_print("dst: ", &plane_state->dst, false); return -ERANGE;