wl1271: sdio: add suspend/resume support

Add required suspend/resume support to prevent the SDIO
core from removing our card completely during system suspend.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Tested-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_sdio.c b/drivers/net/wireless/wl12xx/wl1271_sdio.c
index f7bef32f04c9..784ef3432641 100644
--- a/drivers/net/wireless/wl12xx/wl1271_sdio.c
+++ b/drivers/net/wireless/wl12xx/wl1271_sdio.c
@@ -290,11 +290,31 @@ static void __devexit wl1271_remove(struct sdio_func *func)
         wl1271_free_hw(wl);
 }
 
+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;
+}
+
+static int wl1271_resume(struct device *dev)
+{
+        return 0;
+}
+
+static const struct dev_pm_ops wl1271_sdio_pm_ops = {
+        .suspend        = wl1271_suspend,
+        .resume         = wl1271_resume,
+};
+
 static struct sdio_driver wl1271_sdio_driver = {
         .name           = "wl1271_sdio",
         .id_table       = wl1271_devices,
         .probe          = wl1271_probe,
         .remove         = __devexit_p(wl1271_remove),
+        .drv = {
+                .pm = &wl1271_sdio_pm_ops,
+        },
 };
 
 static int __init wl1271_init(void)