From: Rob Clark rob@ti.com
'struct omap_video_timings' was updated w/ a 'bool interlaced'. Without a matching update in omap_connector, this field could have undefined values from the stack, which isn't quite ideal.
Update the fxns to convert omapdss<->drm timings structs, and zero-init 'struct omap_video_timings' when it is declared on stack to avoid issues like this in the future.
Signed-off-by: Rob Clark rob@ti.com --- drivers/staging/omapdrm/omap_connector.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-)
diff --git a/drivers/staging/omapdrm/omap_connector.c b/drivers/staging/omapdrm/omap_connector.c index 5e2856c..5f4a89b 100644 --- a/drivers/staging/omapdrm/omap_connector.c +++ b/drivers/staging/omapdrm/omap_connector.c @@ -48,13 +48,10 @@ static inline void copy_timings_omap_to_drm(struct drm_display_mode *mode, mode->vsync_end = mode->vsync_start + timings->vsw; mode->vtotal = mode->vsync_end + timings->vbp;
- /* note: whether or not it is interlaced, +/- h/vsync, etc, - * which should be set in the mode flags, is not exposed in - * the omap_video_timings struct.. but hdmi driver tracks - * those separately so all we have to have to set the mode - * is the way to recover these timings values, and the - * omap_dss_driver would do the rest. - */ + mode->flags = 0; + + if (timings->interlace) + mode->flags |= DRM_MODE_FLAG_INTERLACE; }
static inline void copy_timings_drm_to_omap(struct omap_video_timings *timings, @@ -71,6 +68,8 @@ static inline void copy_timings_drm_to_omap(struct omap_video_timings *timings, timings->vfp = mode->vsync_start - mode->vdisplay; timings->vsw = mode->vsync_end - mode->vsync_start; timings->vbp = mode->vtotal - mode->vsync_end; + + timings->interlace = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); }
static void omap_connector_dpms(struct drm_connector *connector, int mode) @@ -187,7 +186,7 @@ static int omap_connector_get_modes(struct drm_connector *connector) } } else { struct drm_display_mode *mode = drm_mode_create(dev); - struct omap_video_timings timings; + struct omap_video_timings timings = {0};
dssdrv->get_timings(dssdev, &timings);
@@ -291,7 +290,7 @@ void omap_connector_mode_set(struct drm_connector *connector, struct omap_connector *omap_connector = to_omap_connector(connector); struct omap_dss_device *dssdev = omap_connector->dssdev; struct omap_dss_driver *dssdrv = dssdev->driver; - struct omap_video_timings timings; + struct omap_video_timings timings = {0};
copy_timings_drm_to_omap(&timings, mode);