drm/radeon: don't check crtcs in card_posted() on cards without DCE

Skip checking crtcs in hardware without them.  Avoids checking
non-existent hardware.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 89cc8166db94..af82c9b6a28b 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -471,6 +471,9 @@ bool radeon_card_posted(struct radeon_device *rdev)
             rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE)
                 return false;
 
+        if (ASIC_IS_NODCE(rdev))
+                goto check_memsize;
+
         /* first check CRTCs */
         if (ASIC_IS_DCE4(rdev)) {
                 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
@@ -499,6 +502,7 @@ bool radeon_card_posted(struct radeon_device *rdev)
                 }
         }
 
+check_memsize:
         /* then check MEM_SIZE, in case the crtcs are off */
         if (rdev->family >= CHIP_R600)
                 reg = RREG32(R600_CONFIG_MEMSIZE);