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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>
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@ -687,6 +687,9 @@ radeon_combios_get_tv_info(struct radeon_device *rdev)
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uint16_t tv_info;
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enum radeon_tv_std tv_std = TV_STD_NTSC;
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if (rdev->bios == NULL)
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return tv_std;
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tv_info = combios_get_table_offset(dev, COMBIOS_TV_INFO_TABLE);
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if (tv_info) {
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if (RBIOS8(tv_info + 6) == 'T') {
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