gpu: nvgpu: skip channel status verification if TSG has timed out

In gk20a_fifo_tsg_unbind_channel(), we always verify channel status before
unbinding a channel from TSG
But in case TSG has alread timed out we never re-enable it so it does not
make sense to inspect channel status anyways

So skip channel status verification in case TSG has timed out

Bug 200327095

Change-Id: Iccf601271290643c235c3f2656201549210a6886
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1586015
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/fifo_gk20a.c b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
index 194824c3..d10af9e9 100644
--- a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
@@ -1966,7 +1966,7 @@ int gk20a_fifo_tsg_unbind_channel(struct channel_gk20a *ch)
         if (err)
                 goto fail_enable_tsg;
 
-        if (g->ops.fifo.tsg_verify_channel_status) {
+        if (g->ops.fifo.tsg_verify_channel_status && !tsg_timedout) {
                 err = g->ops.fifo.tsg_verify_channel_status(ch);
                 if (err)
                         goto fail_enable_tsg;