we dont need to go down the path of enabling/disabling the SR
if we dont need to. do some sanity check and trigger if needed
Cc: Kevin Hilman <khil...@deeprootsystems.com>
Cc: Thara Gopinath <th...@ti.com>
Signed-off-by: Nishanth Menon <n...@ti.com>
---
arch/arm/mach-omap2/smartreflex.c | 19 +++++++++++++++----
1 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-omap2/smartreflex.c
b/arch/arm/mach-omap2/smartreflex.c
index d63691b..9b5a10e 100644
--- a/arch/arm/mach-omap2/smartreflex.c
+++ b/arch/arm/mach-omap2/smartreflex.c
@@ -778,15 +778,26 @@ static int omap_sr_autocomp_show(void *data, u64 *val)
static int omap_sr_autocomp_store(void *data, u64 val)
{
struct omap_sr *sr_info = (struct omap_sr *) data;
+ u32 value = (u32) val;
if (!sr_info) {
pr_warning("%s: omap_sr struct for SR not found\n", __func__);
return -EINVAL;
}
- if (!val)
- sr_stop_vddautocomp(sr_info);
- else
- sr_start_vddautocomp(sr_info);
+
+ /* Sanity check */
+ if (value && (value != 1)) {
+ pr_err("%s: invalid value %d\n", __func__, value);
+ return -EINVAL;
+ }
+
+ /* change only if needed */
+ if (sr_info->is_autocomp_active ^ value) {
+ if (!val)
+ sr_stop_vddautocomp(sr_info);
+ else
+ sr_start_vddautocomp(sr_info);
+ }
return 0;
}
--
1.6.3.3
--
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