gpu: nvgpu: Bump unmap retries if not silicon

In simulation and emulation 50ms is not enough to ensure a job is
complete. Bump it to 5s when not running on silicon.

Bug 1510751

Change-Id: I90883b70ce2a75a8f07344f713d647b3fa0d0c7d
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/432044
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Chris Dragan <kdragan@nvidia.com>
Tested-by: Chris Dragan <kdragan@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Shridhar Rasal <srasal@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
index 6f62e1cb..e580732a 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
@@ -794,7 +794,10 @@ static void gk20a_vm_unmap_user(struct vm_gk20a *vm, u64 offset)
         if (mapped_buffer->flags & NVHOST_AS_MAP_BUFFER_FLAGS_FIXED_OFFSET) {
                 mutex_unlock(&vm->update_gmmu_lock);
 
-                retries = 1000;
+                if (tegra_platform_is_silicon())
+                        retries = 1000;
+                else
+                        retries = 1000000;
                 while (retries) {
                         if (atomic_read(&mapped_buffer->ref.refcount) == 1)
                                 break;