OMAP3+: SR: enable/disable SR only on need

Since we already know the state of the autocomp enablement, we can
see if the requested state is different from the current state and
enable/disable SR only on the need basis.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
index 616ef62b3fa5..3bd9facd8e0d 100644
--- a/arch/arm/mach-omap2/smartreflex.c
+++ b/arch/arm/mach-omap2/smartreflex.c
@@ -807,10 +807,13 @@ static int omap_sr_autocomp_store(void *data, u64 val)
                 return -EINVAL;
         }
 
-        if (!val)
-                sr_stop_vddautocomp(sr_info);
-        else
-                sr_start_vddautocomp(sr_info);
+        /* control enable/disable only if there is a delta in value */
+        if (sr_info->autocomp_active != val) {
+                if (!val)
+                        sr_stop_vddautocomp(sr_info);
+                else
+                        sr_start_vddautocomp(sr_info);
+        }
 
         return 0;
 }