staging: zram: __zram_reset_device() can be static

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/zram/zram_drv.c

@@ -464,7 +464,7 @@ static void zram_make_request(struct request_queue *queue, struct bio *bio)
 	bio_io_error(bio);
 }
 
-void __zram_reset_device(struct zram *zram)
+static void __zram_reset_device(struct zram *zram)
 {
 	size_t index;
 	struct zram_meta *meta;