gpu: nvgpu: vgpu: init vars in gk20a vgpu missed

pending_sema_waits and a few other variables in struct gk20a is used
in gk20a shutdown path but we didn't initialize them in vgpu. I added
a function vgpu_init_vars dedicated to init variables for struct gk20a.
The native code also similar function nvgpu_init_vars().

This is a quick fix. Finally, the common probe code is better be put
in common function btween vgpu and native gpu.

Bug 200293437
Jira EVLR-1152

Change-Id: I55f0d179d7adba556e0cb404766e14405b3e27e5
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: http://git-master/r/1330229
(cherry picked from commit 7691902fec8abdd621ee17561607efeef615499f)
Reviewed-on: http://git-master/r/1331604
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/vgpu.c b/drivers/gpu/nvgpu/vgpu/vgpu.c
index 49f0fb39..871f0874 100644
--- a/drivers/gpu/nvgpu/vgpu/vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/vgpu.c
@@ -227,6 +227,16 @@ static void vgpu_remove_support(struct gk20a *g)
         }
 }
 
+static void vgpu_init_vars(struct gk20a *g)
+{
+        nvgpu_mutex_init(&g->poweroff_lock);
+        g->regs_saved = g->regs;
+        g->bar1_saved = g->bar1;
+
+        INIT_LIST_HEAD(&g->pending_sema_waits);
+        nvgpu_raw_spinlock_init(&g->pending_sema_waits_lock);
+}
+
 static int vgpu_init_support(struct platform_device *pdev)
 {
         struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -583,6 +593,8 @@ int vgpu_probe(struct platform_device *pdev)
 
         vgpu_init_support(pdev);
 
+        vgpu_init_vars(gk20a);
+
         init_rwsem(&gk20a->busy_lock);
 
         nvgpu_spinlock_init(&gk20a->mc_enable_lock);