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gpu: nvgpu: allow suspend when engine is busy

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We currently check that engine is idle before proceeding with
suspend. This prevents suspend when we could simply disable and
preempt all channels. Moreover, doing such a check in virtualization
case, would require to query engine status from RM server, before
proceeding with suspend.
Removed check on engine idle for system suspend.

JIRA EVLR-1852

Change-Id: Ic6dc65af14b00f236db20038dfc04fa0928c1fe2
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1552347
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Thomas Fleury
2017-08-31 15:08:43 -07:00
committed by mobile promotions
parent f073e6d4a3
commit 6b3b2b9c08
2 changed files with 0 additions and 8 deletions
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5
drivers/gpu/nvgpu/common/linux/module.c
View File

@@ -276,11 +276,6 @@ static int gk20a_pm_prepare_poweroff(struct device *dev)
if (!g->power_on)
goto done;
if (gk20a_fifo_is_engine_busy(g)) {
ret = -EBUSY;
goto done;
}
gk20a_scale_suspend(dev);
gk20a_cde_suspend(l);

3
drivers/gpu/nvgpu/gk20a/gk20a.c
View File

@@ -96,9 +96,6 @@ int gk20a_prepare_poweroff(struct gk20a *g)
gk20a_dbg_fn("");
if (gk20a_fifo_is_engine_busy(g))
return -EBUSY;
ret = gk20a_channel_suspend(g);
if (ret)
return ret;