gpu: nvgpu: store ch ptr in gr isr data

Store a channel pointer that is either NULL or a referenced channel to
avoid confusion about channel ownership. A pure channel ID is dangerous.

Jira NVGPU-1460

Change-Id: I6f7b4f80cf39abc290ce9153ec6bf5b62918da97
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1955401
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
(cherry picked from commit 4e6d9afab87fce6b0a5c18b51d174ec7f800b19c in
dev-kernel)
Reviewed-on: https://git-master.nvidia.com/r/2008516
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@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.h b/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
index 9ccd555a..d795a3fc 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.h
@@ -239,7 +239,7 @@ struct gr_gk20a_isr_data {
         u32 data_lo;
         u32 data_hi;
         u32 curr_ctx;
-        u32 chid;
+        struct channel_gk20a *ch;
         u32 offset;
         u32 sub_chan;
         u32 class_num;