gpu: nvgpu: vgpu: remove smmu checkings

Currently vgpu always disable smmu.

Jira EVLR-2364

Change-Id: I54dfa5ff6bfda56975617ec526d80359bf3cf672
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1649938
Reviewed-by: Aingara Paramakuru <aparamakuru@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nirav Patel <nipatel@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/vgpu/fifo_vgpu.c b/drivers/gpu/nvgpu/common/linux/vgpu/fifo_vgpu.c
index 5dbc57a4..e8ca9d2f 100644
--- a/drivers/gpu/nvgpu/common/linux/vgpu/fifo_vgpu.c
+++ b/drivers/gpu/nvgpu/common/linux/vgpu/fifo_vgpu.c
@@ -16,7 +16,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <linux/dma-mapping.h>
 #include <trace/events/gk20a.h>
 #include <uapi/linux/nvgpu.h>
 
@@ -149,7 +148,6 @@ int vgpu_channel_setup_ramfc(struct channel_gk20a *ch, u64 gpfifo_base,
                                 unsigned long acquire_timeout, u32 flags)
 {
         struct device __maybe_unused *d = dev_from_gk20a(ch->g);
-        struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(d);
         struct tegra_vgpu_cmd_msg msg;
         struct tegra_vgpu_ramfc_params *p = &msg.params.ramfc;
         int err;
@@ -162,7 +160,7 @@ int vgpu_channel_setup_ramfc(struct channel_gk20a *ch, u64 gpfifo_base,
         p->gpfifo_va = gpfifo_base;
         p->num_entries = gpfifo_entries;
         p->userd_addr = ch->userd_iova;
-        p->iova = mapping ? 1 : 0;
+        p->iova = 0;
         err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
 
         return (err || msg.ret) ? -ENOMEM : 0;