From: Michel Dänzer <daenzer@vmware.com>
Date: Mon, 11 Jan 2010 07:58:38 +0000 (+0100)
Subject: drm/radeon/kms: Fix crash getting TV info with no BIOS.
X-Git-Tag: firefly_0821_release~9833^2~3227^2~35^2~6
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=11f3b59e3654c66c4e8ef2c48f8138b78bf440da;p=firefly-linux-kernel-4.4.55.git

drm/radeon/kms: Fix crash getting TV info with no BIOS.

Signed-off-by: Michel Dänzer <daenzer@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index 7914455c96ca..579c8920e081 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -687,6 +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') {