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drm/radeon/kms: fix r6xx/7xx 1D tiling CS checker v2

Message ID 1288138962-2818-1-git-send-email-alexdeucher@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Alex Deucher Oct. 27, 2010, 12:22 a.m. UTC
None
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Patch

diff --git a/drivers/gpu/drm/radeon/r600_cs.c b/drivers/gpu/drm/radeon/r600_cs.c
index 7e44b5a..0d29065 100644
--- a/drivers/gpu/drm/radeon/r600_cs.c
+++ b/drivers/gpu/drm/radeon/r600_cs.c
@@ -215,6 +215,9 @@  static inline int r600_cs_track_validate_cb(struct radeon_cs_parser *p, int i)
 				 __func__, __LINE__, pitch);
 			return -EINVAL;
 		}
+		/* avoid breaking userspace */
+		if (height > 7)
+			height &= ~0x7;
 		if (!IS_ALIGNED(height, 8)) {
 			dev_warn(p->dev, "%s:%d cb height (%d) invalid\n",
 				 __func__, __LINE__, height);