gpu: nvgpu: compare rounded freq to last value

We right now compare requested value to the last
freq value. Last freq value is always a rounded
value, whereas requested value need not be a
rounded value

Hence it is incorrect to compare requested value
to last freq value

Fix this by comparing rounded value to last_freq

Change-Id: I7c6ea7c4e57105598c9af75efe70016b7fa8038b
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1287360
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a_scale.c b/drivers/gpu/nvgpu/gk20a/gk20a_scale.c
index 36a47e24..edf92de6 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a_scale.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a_scale.c
@@ -1,7 +1,7 @@
 /*
  * gk20a clock scaling profile
  *
- * Copyright (c) 2013-2016, NVIDIA Corporation. All rights reserved.
+ * Copyright (c) 2013-2017, NVIDIA Corporation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -181,13 +181,13 @@ static int gk20a_scale_target(struct device *dev, unsigned long *freq,
         if (local_freq > max_freq)
                 local_freq = max_freq;
 
-        /* Check for duplicate request */
-        if (local_freq == g->last_freq)
-                return 0;
-
         /* set the final frequency */
         rounded_rate = platform->clk_round_rate(dev, local_freq);
 
+        /* Check for duplicate request */
+        if (rounded_rate == g->last_freq)
+                return 0;
+
         if (platform->clk_get_rate(dev) == rounded_rate)
                 *freq = rounded_rate;
         else {