OMAP: DSS2: OMAPFB: Check var even if there isn't memory

If video memory hasn't been allocate have check_fb_var() still check
most of the settings, just skip the ones involving the size of the
memory region. Also skip the memory address calculations in
omapfb_setup_overlay() if there's no memory.

Signed-off-by: Ville Syrjälä <ville.syrjala@nokia.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

1 files changed, 5 insertions, 6 deletions

diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c
index 2ac20d230ead..ccccf3d71a39 100644
--- a/drivers/video/omap2/omapfb/omapfb-main.c
+++ b/drivers/video/omap2/omapfb/omapfb-main.c
@@ -668,9 +668,6 @@ int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
 
         DBG("check_fb_var %d\n", ofbi->id);
 
-        if (ofbi->region.size == 0)
-                return 0;
-
         r = fb_mode_to_dss_mode(var, &mode);
         if (r) {
                 DBG("cannot convert var to omap dss mode\n");
@@ -690,7 +687,8 @@ int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
         if (check_fb_res_bounds(var))
                 return -EINVAL;
 
-        if (check_fb_size(ofbi, var))
+        /* When no memory is allocated ignore the size check */
+        if (ofbi->region.size != 0 && check_fb_size(ofbi, var))
                 return -EINVAL;
 
         if (var->xres + var->xoffset > var->xres_virtual)
@@ -894,8 +892,9 @@ static int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
                 yres = var->yres;
         }
 
-        omapfb_calc_addr(ofbi, var, fix, rotation,
-                         &data_start_p, &data_start_v);
+        if (ofbi->region.size)
+                omapfb_calc_addr(ofbi, var, fix, rotation,
+                                 &data_start_p, &data_start_v);
 
         r = fb_mode_to_dss_mode(var, &mode);
         if (r) {