gpu: nvgpu: do not alloc ctx buffers if already allocated

Bug 200393029

Change-Id: Ic2946958e34bcb9247179fcf2e8735c822155cce
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1665338
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Rajkumar Kasirajan <rkasirajan@nvidia.com>
Reviewed-by: Shreshtha Sahu <ssahu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/platform_gk20a_tegra.c b/drivers/gpu/nvgpu/common/linux/platform_gk20a_tegra.c
index 952a7ed1..3e1c6996 100644
--- a/drivers/gpu/nvgpu/common/linux/platform_gk20a_tegra.c
+++ b/drivers/gpu/nvgpu/common/linux/platform_gk20a_tegra.c
@@ -122,6 +122,9 @@ static int gk20a_tegra_secure_alloc(struct gk20a *g,
         int err = 0;
         size_t aligned_size = PAGE_ALIGN(size);
 
+        if (nvgpu_mem_is_valid(&desc->mem))
+                return 0;
+
         /* We ran out of preallocated memory */
         if (secure_buffer->used + aligned_size > secure_buffer->size) {
                 nvgpu_err(platform->g, "failed to alloc %zu bytes of VPR, %zu/%zu used",