mmc: sh_mmcif: support aggressive clock gating

To support MMC aggressive clock gating the driver has to stop the
interface clock when the .set_ios() method is called with .clock == 0.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index aea86262ed66..af97015a2fc7 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -844,15 +844,15 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
         struct sh_mmcif_host *host = mmc_priv(mmc);
         struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
 
-        if (ios->power_mode == MMC_POWER_OFF) {
+        if (ios->power_mode == MMC_POWER_UP) {
+                if (p->set_pwr)
+                        p->set_pwr(host->pd, ios->power_mode);
+        } else if (ios->power_mode == MMC_POWER_OFF || !ios->clock) {
                 /* clock stop */
                 sh_mmcif_clock_control(host, 0);
-                if (p->down_pwr)
+                if (ios->power_mode == MMC_POWER_OFF && p->down_pwr)
                         p->down_pwr(host->pd);
                 return;
-        } else if (ios->power_mode == MMC_POWER_UP) {
-                if (p->set_pwr)
-                        p->set_pwr(host->pd, ios->power_mode);
         }
 
         if (ios->clock)