diff mbox

[4/7] drm/nvc0-/gr: shift wrapping bug in nvc0_grctx_generate_r406800

Message ID 1384259656-29483-4-git-send-email-maarten.lankhorst@canonical.com (mailing list archive)
State New, archived
Headers show

Commit Message

Maarten Lankhorst Nov. 12, 2013, 12:34 p.m. UTC 
From: Dan Carpenter <dan.carpenter@oracle.com>

We care about the upper 32 bits here so we have to use 1ULL instead of 1
to avoid a shift wrapping bug.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
---
 drivers/gpu/drm/nouveau/core/engine/graph/ctxnvc0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/gpu/drm/nouveau/core/engine/graph/ctxnvc0.c b/drivers/gpu/drm/nouveau/core/engine/graph/ctxnvc0.c
index 64dca26..fe67415 100644
--- a/drivers/gpu/drm/nouveau/core/engine/graph/ctxnvc0.c
+++ b/drivers/gpu/drm/nouveau/core/engine/graph/ctxnvc0.c
@@ -1039,7 +1039,7 @@  nvc0_grctx_generate_r406800(struct nvc0_graph_priv *priv)
 			} while (!tpcnr[gpc]);
 			tpc = priv->tpc_nr[gpc] - tpcnr[gpc]--;
 
-			tpc_set |= 1 << ((gpc * 8) + tpc);
+			tpc_set |= 1ULL << ((gpc * 8) + tpc);
 		}
 
 		nv_wr32(priv, 0x406800 + (i * 0x20), lower_32_bits(tpc_set));