mtd: introduce mtd_suspend interface

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index 1f749d58..b7f0cd1 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -191,7 +191,7 @@
 
 	for (i = 0; i < MAX_RESOURCES && info->mtd[i]; i++)
 		if (info->mtd[i]->suspend && info->mtd[i]->resume)
-			if (info->mtd[i]->suspend(info->mtd[i]) == 0)
+			if (mtd_suspend(info->mtd[i]) == 0)
 				info->mtd[i]->resume(info->mtd[i]);
 }
 #else
diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c
index 274e399..9cb4273 100644
--- a/drivers/mtd/maps/pxa2xx-flash.c
+++ b/drivers/mtd/maps/pxa2xx-flash.c
@@ -125,7 +125,7 @@
 {
 	struct pxa2xx_flash_info *info = platform_get_drvdata(dev);
 
-	if (info && info->mtd->suspend(info->mtd) == 0)
+	if (info && mtd_suspend(info->mtd) == 0)
 		info->mtd->resume(info->mtd);
 }
 #else
diff --git a/drivers/mtd/maps/rbtx4939-flash.c b/drivers/mtd/maps/rbtx4939-flash.c
index bb7d204..5856aa2 100644
--- a/drivers/mtd/maps/rbtx4939-flash.c
+++ b/drivers/mtd/maps/rbtx4939-flash.c
@@ -120,7 +120,7 @@
 	struct rbtx4939_flash_info *info = platform_get_drvdata(dev);
 
 	if (info->mtd->suspend && info->mtd->resume)
-		if (info->mtd->suspend(info->mtd) == 0)
+		if (mtd_suspend(info->mtd) == 0)
 			info->mtd->resume(info->mtd);
 }
 #else
diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c
index ac3a290..20944f0 100644
--- a/drivers/mtd/maps/sa1100-flash.c
+++ b/drivers/mtd/maps/sa1100-flash.c
@@ -377,7 +377,7 @@
 static void sa1100_mtd_shutdown(struct platform_device *dev)
 {
 	struct sa_info *info = platform_get_drvdata(dev);
-	if (info && info->mtd->suspend(info->mtd) == 0)
+	if (info && mtd_suspend(info->mtd) == 0)
 		info->mtd->resume(info->mtd);
 }
 #else