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[13/19] omap3+: sr: enable/disable SR only on need

Message ID 1298116918-30744-14-git-send-email-nm@ti.com (mailing list archive)
State New, archived
Delegated to: Kevin Hilman
Headers show

Commit Message

Nishanth Menon Feb. 19, 2011, 12:01 p.m. UTC 
None
diff mbox

Patch

diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
index 9c61ab0..65431df 100644
--- a/arch/arm/mach-omap2/smartreflex.c
+++ b/arch/arm/mach-omap2/smartreflex.c
@@ -819,10 +819,13 @@  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;
 }