diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c
index dbb436863e7f6e1f9183791211918b2563f1c6ca..b9926ee0052c37bc5d6f68cada276f010ea6bad9 100644
--- a/drivers/staging/zram/zram_drv.c
+++ b/drivers/staging/zram/zram_drv.c
@@ -697,7 +697,8 @@ int zram_init_device(struct zram *zram)
 	return ret;
 }
 
-void zram_slot_free_notify(struct block_device *bdev, unsigned long index)
+static void zram_slot_free_notify(struct block_device *bdev,
+				unsigned long index)
 {
 	struct zram *zram;
 
diff --git a/drivers/staging/zram/zram_drv.h b/drivers/staging/zram/zram_drv.h
index 7fdeb7d39ae91b4993983761255f758fbf18e52d..e5cd2469b6a088e034c1dea8c098dd8fd3463313 100644
--- a/drivers/staging/zram/zram_drv.h
+++ b/drivers/staging/zram/zram_drv.h
@@ -47,7 +47,7 @@ static const unsigned default_disksize_perc_ram = 25;
  * Pages that compress to size greater than this are stored
  * uncompressed in memory.
  */
-static const unsigned max_zpage_size = PAGE_SIZE / 4 * 3;
+static const size_t max_zpage_size = PAGE_SIZE / 4 * 3;
 
 /*
  * NOTE: max_zpage_size must be less than or equal to: