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gpu: nvgpu: Disable TSG before unbinding channel

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Disable TSG before unbinding channel to fix the ap_systemsw
nvgpu_ctxsw_trace_twod test failure with AELPG power feature
enabled.

Bug 3695626

Change-Id: I55939b6b352da5f3f38b31440366a17d89ff7c20
Signed-off-by: mkumbar <mkumbar@nvidia.com>
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2740027
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Rajesh Devaraj <rdevaraj@nvidia.com>
Reviewed-by: Ankur Kishore <ankkishore@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
mkumbar
2022-06-29 23:09:49 +05:30
committed by mobile promotions
parent 42beb7f4db
commit d00a8fd09a
1 changed files with 24 additions and 0 deletions
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24
drivers/gpu/nvgpu/os/linux/ioctl_channel.c
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@@ -1498,7 +1498,31 @@ long gk20a_channel_ioctl(struct file *filp,
__func__, cmd);
break;
}
/* Disable TSG and examine status before unbinding channel */
err = nvgpu_channel_disable_tsg(ch->g, ch);
if (err) {
dev_err(dev,
"%s: failed to disable channel/TSG for ioctl cmd: 0x%x",
__func__, cmd);
gk20a_idle(ch->g);
break;
}
err = nvgpu_preempt_channel(ch->g, ch);
if (err)
dev_err(dev,
"%s: failed to preempt channel for ioctl cmd: 0x%x",
__func__, cmd);
err = nvgpu_channel_enable_tsg(ch->g, ch);
if (err)
dev_err(dev,
"%s: failed to re-enable channel/TSG for ioctl cmd: 0x%x",
__func__, cmd);
gk20a_idle(ch->g);
break;
case NVGPU_IOCTL_CHANNEL_RESCHEDULE_RUNLIST: