gpu: nvgpu: gm20b: fix CBC clear

gm20b_ltc_cbc_ctrl sent the wrong register value to
clear the CBC.

Bug 1507804

Change-Id: Ib0d867a122466e50cb15fef3b320fb2ee8455ef2
Signed-off-by: Wei Sun <wsun@nvidia.com>
Reviewed-on: http://git-master/r/435297
Reviewed-by: Kevin Huang (Eng-SW) <kevinh@nvidia.com>
Tested-by: Kevin Huang (Eng-SW) <kevinh@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/ltc_gm20b.c b/drivers/gpu/nvgpu/gm20b/ltc_gm20b.c
index b9c3b32d..e3c003a6 100644
--- a/drivers/gpu/nvgpu/gm20b/ltc_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/ltc_gm20b.c
@@ -131,7 +131,7 @@ static int gm20b_ltc_cbc_ctrl(struct gk20a *g, enum gk20a_cbc_op op,
                 BUG_ON(1);
         }
         gk20a_writel(g, ltc_ltcs_ltss_cbc_ctrl1_r(),
-                     gk20a_readl(g, ltc_ltcs_ltss_cbc_ctrl1_r()) || hw_op);
+                     gk20a_readl(g, ltc_ltcs_ltss_cbc_ctrl1_r()) | hw_op);
 
         for (ltc = 0; ltc < g->ltc_count; ltc++) {
                 for (slice = 0; slice < slices_per_ltc; slice++) {