gpu: nvgpu: check return value of mutex_init in mclk code

- check return value of nvgpu_mutex_init in clk_mclk.c
- declare new callback g->ops.pmu.mclk_deinit() to
  deinitialize mclk mutexes
- and define this callback for gp106
- add corresponding nvgpu_mutex_destroy calls in
  deinitialization

Jira NVGPU-13

Change-Id: I1491c084d330ac9756c9520477e6fe494560e651
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1321294
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 951c8267..e3dad962 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -699,6 +699,7 @@ struct gpu_ops {
                 int (*flcn_populate_bl_dmem_desc)(struct gk20a *g,
                         void *lsfm,     u32 *p_bl_gen_desc_size, u32 falconid);
                 int (*mclk_init)(struct gk20a *g);
+                void (*mclk_deinit)(struct gk20a *g);
                 u32  lspmuwprinitdone;
                 u32  lsfloadedfalconid;
                 bool fecsbootstrapdone;