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path: root/drivers/gpu/drm/radeon/radeon_agp.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_agp.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_agp.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_agp.c b/drivers/gpu/drm/radeon/radeon_agp.c
index 220f454ea9fa..c0681a5556dc 100644
--- a/drivers/gpu/drm/radeon/radeon_agp.c
+++ b/drivers/gpu/drm/radeon/radeon_agp.c
@@ -144,9 +144,19 @@ int radeon_agp_init(struct radeon_device *rdev)
ret = drm_agp_info(rdev->ddev, &info);
if (ret) {
+ drm_agp_release(rdev->ddev);
DRM_ERROR("Unable to get AGP info: %d\n", ret);
return ret;
}
+
+ if (rdev->ddev->agp->agp_info.aper_size < 32) {
+ drm_agp_release(rdev->ddev);
+ 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);
@@ -221,6 +231,7 @@ int radeon_agp_init(struct radeon_device *rdev)
ret = drm_agp_enable(rdev->ddev, mode);
if (ret) {
DRM_ERROR("Unable to enable AGP (mode = 0x%lx)\n", mode.mode);
+ drm_agp_release(rdev->ddev);
return ret;
}