drm/atomic: fix an error code in mode_fixup()

commit f9ad86e42d0303eeb8e0d41bb208153022ebd9d2 upstream.

Having "ret" be a bool type works for everything except
ret = funcs->atomic_check().  The other functions all return zero on
error but ->atomic_check() returns negative error codes.  We want to
propagate the error code but instead we return 1.

I found this bug with static analysis and I don't know if it affects
run time.

Fixes: 4cd4df8080a3 ("drm/atomic: Add ->atomic_check() to encoder helpers")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170207234601.GA23981@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 1ac29d703c126422c0fde5622d04ba9d67b963fc..ea443fafb9340001b2ce6c331cd94086c91a5033 100644 (file)
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -265,7 +265,7 @@ mode_fixup(struct drm_atomic_state *state)
        struct drm_connector *connector;
        struct drm_connector_state *conn_state;
        int i;
-       bool ret;
+       int ret;
 
        for_each_crtc_in_state(state, crtc, crtc_state, i) {
                if (!crtc_state->mode_changed &&