mmc: core: Handle both poweroff notification types for eMMC

Depending on the context of the operation while powering down the card,
either POWER_OFF_NOTIFY_SHORT or POWER_OFF_NOTIFY_LONG will be used. In
suspend context a short timeout is preferred while a long timeout would
be acceptable in a shutdown/hibernation context.

We add a new parameter to the mmc_suspend function so we can provide an
indication of what notification type to use.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

drivers/mmc/core/mmc.c

@@ -1464,12 +1464,11 @@ static void mmc_detect(struct mmc_host *host)
 	}
 }
 
-/*
- * Suspend callback from host.
- */
-static int mmc_suspend(struct mmc_host *host)
+static int _mmc_suspend(struct mmc_host *host, bool is_suspend)
 {
 	int err = 0;
+	unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT :
+					EXT_CSD_POWER_OFF_LONG;
 
 	BUG_ON(!host);
 	BUG_ON(!host->card);
@@ -1487,7 +1486,7 @@ static int mmc_suspend(struct mmc_host *host)
 		goto out;
 
 	if (mmc_can_poweroff_notify(host->card))
-		err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT);
+		err = mmc_poweroff_notify(host->card, notify_type);
 	else if (mmc_can_sleep(host->card))
 		err = mmc_sleep(host);
 	else if (!mmc_host_is_spi(host))
@@ -1501,6 +1500,14 @@ out:
 	return err;
 }
 
+/*
+ * Suspend callback from host.
+ */
+static int mmc_suspend(struct mmc_host *host)
+{
+	return _mmc_suspend(host, true);
+}
+
 /*
  * Resume callback from host.
  *