drm/omap: update for interlaced

'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>
Reviewed-by: Sumit Semwal <sumit.semwal@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/omapdrm/omap_connector.c b/drivers/staging/omapdrm/omap_connector.c
index 5e2856c0e0bbf3ead714ca105d06e54e1dff1545..5f4a89be3dda9ad8208dc9c312500eafaed847af 100644 (file)
--- 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);