1 files changed, 28 insertions, 1 deletions

diff --git a/drivers/net/wireless/wl12xx/sdio.c b/drivers/net/wireless/wl12xx/sdio.c
index 1298461c45d1..5b03fd5ee33f 100644
--- a/drivers/net/wireless/wl12xx/sdio.c
+++ b/drivers/net/wireless/wl12xx/sdio.c
@@ -314,7 +314,34 @@ static int wl1271_suspend(struct device *dev)
 {
         /* Tell MMC/SDIO core it's OK to power down the card
          * (if it isn't already), but not to remove it completely */
-        return 0;
+        struct sdio_func *func = dev_to_sdio_func(dev);
+        struct wl1271 *wl = sdio_get_drvdata(func);
+        mmc_pm_flag_t sdio_flags;
+        int ret = 0;
+
+        wl1271_debug(DEBUG_MAC80211, "wl1271 suspend. wow_enabled: %d",
+                     wl->wow_enabled);
+
+        /* check whether sdio should keep power */
+        if (wl->wow_enabled) {
+                sdio_flags = sdio_get_host_pm_caps(func);
+
+                if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
+                        wl1271_error("can't keep power while host "
+                                     "is suspended");
+                        ret = -EINVAL;
+                        goto out;
+                }
+
+                /* keep power while host suspended */
+                ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+                if (ret) {
+                        wl1271_error("error while trying to keep power");
+                        goto out;
+                }
+        }
+out:
+        return ret;
 }
 
 static int wl1271_resume(struct device *dev)