drivers/gpu/drm/radeon/radeon_atombios.c: range check issues

This change makes the array larger, "MAX_SUPPORTED_TV_TIMING_V1_2" is 3
and the original size "MAX_SUPPORTED_TV_TIMING" is 2.

Also there were checks that were off by one.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/atombios.h b/drivers/gpu/drm/radeon/atombios.h
index 6732b5d..27e2c71 100644 (file)
--- a/drivers/gpu/drm/radeon/atombios.h
+++ b/drivers/gpu/drm/radeon/atombios.h
@@ -2912,7 +2912,7 @@ typedef struct _ATOM_ANALOG_TV_INFO_V1_2
   UCHAR                    ucTV_BootUpDefaultStandard; 
   UCHAR                    ucExt_TV_ASIC_ID;
   UCHAR                    ucExt_TV_ASIC_SlaveAddr;
-  ATOM_DTD_FORMAT          aModeTimings[MAX_SUPPORTED_TV_TIMING];
+  ATOM_DTD_FORMAT          aModeTimings[MAX_SUPPORTED_TV_TIMING_V1_2];
 }ATOM_ANALOG_TV_INFO_V1_2;
 
 typedef struct _ATOM_DPCD_INFO

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 5673665..9916d82 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1264,7 +1264,7 @@ bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index,
        switch (crev) {
        case 1:
                tv_info = (ATOM_ANALOG_TV_INFO *)(mode_info->atom_context->bios + data_offset);
-               if (index > MAX_SUPPORTED_TV_TIMING)
+               if (index >= MAX_SUPPORTED_TV_TIMING)
                        return false;
 
                mode->crtc_htotal = le16_to_cpu(tv_info->aModeTimings[index].usCRTC_H_Total);
@@ -1302,7 +1302,7 @@ bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index,
                break;
        case 2:
                tv_info_v1_2 = (ATOM_ANALOG_TV_INFO_V1_2 *)(mode_info->atom_context->bios + data_offset);
-               if (index > MAX_SUPPORTED_TV_TIMING_V1_2)
+               if (index >= MAX_SUPPORTED_TV_TIMING_V1_2)
                        return false;
 
                dtd_timings = &tv_info_v1_2->aModeTimings[index];