gpu: nvgpu: bypass_smmu debugfs changed to read only

bypass_smmu is set based on whether device_is_iommuable
or not during probe. It cannot be changed during runtime.

Change-Id: I69fd29c87ea3873652a4eb95764f52dc40abf483
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1640381
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/debug.c b/drivers/gpu/nvgpu/common/linux/debug.c
index fb07df5b..169bfbc5 100644
--- a/drivers/gpu/nvgpu/common/linux/debug.c
+++ b/drivers/gpu/nvgpu/common/linux/debug.c
@@ -334,7 +334,7 @@ void gk20a_debug_init(struct gk20a *g, const char *debugfs_symlink)
 
         l->debugfs_bypass_smmu =
                         debugfs_create_bool("bypass_smmu",
-                                        S_IRUGO|S_IWUSR,
+                                        S_IRUGO,
                                         l->debugfs,
                                         &g->mm.bypass_smmu);
         l->debugfs_disable_bigpage =