1 files changed, 18 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index 58f342659cc7..e7b19440102e 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -595,6 +595,20 @@ bool radeon_combios_get_clock_info(struct drm_device *dev)
         return false;
 }
 
+bool radeon_combios_sideport_present(struct radeon_device *rdev)
+{
+        struct drm_device *dev = rdev->ddev;
+        u16 igp_info;
+
+        igp_info = combios_get_table_offset(dev, COMBIOS_INTEGRATED_SYSTEM_INFO_TABLE);
+
+        if (igp_info) {
+                if (RBIOS16(igp_info + 0x4))
+                        return true;
+        }
+        return false;
+}
+
 static const uint32_t default_primarydac_adj[CHIP_LAST] = {
         0x00000808,             /* r100  */
         0x00000808,             /* rv100 */
@@ -673,6 +687,9 @@ radeon_combios_get_tv_info(struct radeon_device *rdev)
         uint16_t tv_info;
         enum radeon_tv_std tv_std = TV_STD_NTSC;
 
+        if (rdev->bios == NULL)
+                return tv_std;
+
         tv_info = combios_get_table_offset(dev, COMBIOS_TV_INFO_TABLE);
         if (tv_info) {
                 if (RBIOS8(tv_info + 6) == 'T') {
@@ -954,8 +971,7 @@ struct radeon_encoder_lvds *radeon_combios_get_lvds_info(struct radeon_encoder
                          lvds->native_mode.vdisplay);
 
                 lvds->panel_vcc_delay = RBIOS16(lcd_info + 0x2c);
-                if (lvds->panel_vcc_delay > 2000 || lvds->panel_vcc_delay < 0)
-                        lvds->panel_vcc_delay = 2000;
+                lvds->panel_vcc_delay = min_t(u16, lvds->panel_vcc_delay, 2000);
 
                 lvds->panel_pwr_delay = RBIOS8(lcd_info + 0x24);
                 lvds->panel_digon_delay = RBIOS16(lcd_info + 0x38) & 0xf;