gpu: nvgpu: use nvgpu API to check for allocated memory

In __gr_gk20a_exec_ctx_ops(), we directly access linux specific pages to check
if memory is allocated or not
Since we need to remove this linux specific dependency from common code,
use common API nvgpu_mem_is_valid() to check if memory is allocated or not

Jira NVGPU-448

Change-Id: Iad62482ad1c0dfad3b96c6c125c2641bbe6ea596
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1612445
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index ad9ecdfa..99f85b57 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -7895,7 +7895,7 @@ int __gr_gk20a_exec_ctx_ops(struct channel_gk20a *ch,
                                 }
                                 if (!pm_ctx_ready) {
                                         /* Make sure ctx buffer was initialized */
-                                        if (!ch_ctx->pm_ctx.mem.priv.pages) {
+                                        if (!nvgpu_mem_is_valid(&ch_ctx->pm_ctx.mem)) {
                                                 nvgpu_err(g,
                                                         "Invalid ctx buffer");
                                                 err = -EINVAL;