Check ulBootUpMemoryClock on AMD IGPs.

Fix regression noticed by Torsten Kaiser just.for.lkml@googlemail.com

Signed-off-by: Alex Deucher alexdeucher@gmail.com Cc: stable@kernel.org --- drivers/gpu/drm/radeon/radeon_atombios.c | 11 +++++++++-- 1 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 5dd86b9..3f89c9b 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -1029,8 +1029,15 @@ bool radeon_atombios_sideport_present(struct radeon_device *rdev) data_offset); switch (crev) { case 1: - if (igp_info->info.ucMemoryType & 0xf0) - return true; + /* AMD IGPS */ + if ((rdev->family == CHIP_RS690) || + (rdev->family == CHIP_RS740)) { + if (igp_info->info.ulBootUpMemoryClock) + return true; + } else { + if (igp_info->info.ucMemoryType & 0xf0) + return true; + } break; case 2: if (igp_info->info_2.ucMemoryType & 0x0f)