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gpu: nvgpu: Reset priv ring properly on error

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We did not follow the proper sequence to reset priv ring on error.
Instead we just re-enabled priv ring, which does not reset anything.

Rename the gk20a_reset_priv_ring() to gk20a_enable_priv_ring() to
indicate its proper use. Add another gk20a_reset_priv_ring() which
actually resets priv ring properly.

Change-Id: Ied74465b1215daa447a565b7e9cafef7fbe67d1b
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1294681
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Terje Bergstrom
2016-08-25 15:38:57 -07:00
committed by mobile promotions
parent 5fb7f2a262
commit 4bd9682c92
3 changed files with 26 additions and 7 deletions
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2
drivers/gpu/nvgpu/gk20a/gk20a.c
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@@ -933,7 +933,7 @@ int gk20a_pm_finalize_poweron(struct device *dev)
if (g->ops.clk.disable_slowboot)
g->ops.clk.disable_slowboot(g);
gk20a_reset_priv_ring(g);
gk20a_enable_priv_ring(g);
/* TBD: move this after graphics init in which blcg/slcg is enabled.
This function removes SlowdownOnBoot which applies 32x divider