gpu: nvgpu: IOCTL to disable watchdog per-channel

Add IOCTL NVGPU_IOCTL_CHANNEL_WDT to disable/enable
watchdog per-channel

Also, if watchdog is disabled, we currently schedule
the worker with MAX timeout.
Instead of this, do not schedule any worker if
watchdog is disabled

Bug 1683059
Bug 1700277

Change-Id: I7f6bec84adeedb74e014ed6d1471317b854df84c
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/837962
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index 79218c97..9bbc9bd8 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -1436,7 +1436,6 @@ static int gk20a_probe(struct platform_device *dev)
                         CONFIG_GK20A_DEFAULT_TIMEOUT;
         if (tegra_platform_is_silicon())
                 gk20a->timeouts_enabled = true;
-        gk20a->ch_wdt_enabled = true;
 
         gk20a->timeslice_low_priority_us = 1300;
         gk20a->timeslice_medium_priority_us = 2600;