gpu: nvgpu: vgpu: add channel wdt support

- avoid dump gr registers for vgpu
- init wdt lock

Bug 1776876
JIRA VFND-2151

Change-Id: I73293e0d23b614129c763cb22b09156a8e1432cc
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: http://git-master/r/1202256
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/vgpu.c b/drivers/gpu/nvgpu/vgpu/vgpu.c
index 125be58c..c548175a 100644
--- a/drivers/gpu/nvgpu/vgpu/vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/vgpu.c
@@ -240,6 +240,7 @@ static int vgpu_init_support(struct platform_device *pdev)
 
         mutex_init(&g->dbg_sessions_lock);
         mutex_init(&g->client_lock);
+        mutex_init(&g->ch_wdt_lock);
 
         g->remove_support = vgpu_remove_support;
         return 0;