drm/kms/radeon/agp: Move the check of the aper_size after drm_acp_acquire and drm_agp_info

First call drm_agp_acquire to check if agp has been acquired.
Second call drm_agp_info to fill in the info data struct, including aper_size.
Finally do the check to see if the aper_size makes sense.

Signed-off-by: John Kacur <jkacur@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 8 insertions, 7 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_agp.c b/drivers/gpu/drm/radeon/radeon_agp.c
index f58c5f46243..b634d984766 100644
--- a/drivers/gpu/drm/radeon/radeon_agp.c
+++ b/drivers/gpu/drm/radeon/radeon_agp.c
@@ -133,13 +133,6 @@ int radeon_agp_init(struct radeon_device *rdev)
         bool is_v3;
         int ret;
 
-        if (rdev->ddev->agp->agp_info.aper_size < 32) {
-                dev_warn(rdev->dev, "AGP aperture too small (%zuM) "
-                        "need at least 32M, disabling AGP\n",
-                        rdev->ddev->agp->agp_info.aper_size);
-                return -EINVAL;
-        }
-
         /* Acquire AGP. */
         if (!rdev->ddev->agp->acquired) {
                 ret = drm_agp_acquire(rdev->ddev);
@@ -154,6 +147,14 @@ int radeon_agp_init(struct radeon_device *rdev)
                 DRM_ERROR("Unable to get AGP info: %d\n", ret);
                 return ret;
         }
+
+        if (rdev->ddev->agp->agp_info.aper_size < 32) {
+                dev_warn(rdev->dev, "AGP aperture too small (%zuM) "
+                        "need at least 32M, disabling AGP\n",
+                        rdev->ddev->agp->agp_info.aper_size);
+                return -EINVAL;
+        }
+
         mode.mode = info.mode;
         agp_status = (RREG32(RADEON_AGP_STATUS) | RADEON_AGPv3_MODE) & mode.mode;
         is_v3 = !!(agp_status & RADEON_AGPv3_MODE);