gpu: nvgpu: remove use of mutex_is_locked()

mutex_is_locked() API is defined on Linux only
and not on other OS like QNX.

Hence remove use of this API for OS abstraction
support to nvgpu.

Instead of using mutex_is_locked(), use
mutex_trylock() for same purpose

Jira NVGPU-13

Change-Id: I542daf20a2294153da8e8bfe89e0dc0387297523
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1297184
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/sched_gk20a.c b/drivers/gpu/nvgpu/gk20a/sched_gk20a.c
index 54dbcfd1..20cd1232 100644
--- a/drivers/gpu/nvgpu/gk20a/sched_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/sched_gk20a.c
@@ -520,6 +520,7 @@ static int gk20a_sched_debugfs_show(struct seq_file *s, void *unused)
         struct device *dev = s->private;
         struct gk20a *g = gk20a_get_platform(dev)->g;
         struct gk20a_sched_ctrl *sched = &g->sched_ctrl;
+        bool sched_busy = true;
 
         int n = sched->bitmap_size / sizeof(u64);
         int i;
@@ -529,8 +530,13 @@ static int gk20a_sched_debugfs_show(struct seq_file *s, void *unused)
         if (err)
                 return err;
 
+        if (mutex_trylock(&sched->busy_lock)) {
+                sched_busy = false;
+                mutex_unlock(&sched->busy_lock);
+        }
+
         seq_printf(s, "control_locked=%d\n", sched->control_locked);
-        seq_printf(s, "busy=%d\n", mutex_is_locked(&sched->busy_lock));
+        seq_printf(s, "busy=%d\n", sched_busy);
         seq_printf(s, "bitmap_size=%zu\n", sched->bitmap_size);
 
         mutex_lock(&sched->status_lock);