s390/dasd: Use ALIGN_DOWN macro

There is now an ALIGN_DOWN macro available. Let's rather use kernel
provided macros that do the things we want.

Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 79fbe0d68a8d..cbb770824226 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -794,7 +794,7 @@ static void dasd_fba_setup_blk_queue(struct dasd_block *block)
 
         /* Calculate max_discard_sectors and make it PAGE aligned */
         max_bytes = USHRT_MAX * logical_block_size;
-        max_bytes = ALIGN(max_bytes, PAGE_SIZE) - PAGE_SIZE;
+        max_bytes = ALIGN_DOWN(max_bytes, PAGE_SIZE);
         max_discard_sectors = max_bytes / logical_block_size;
 
         blk_queue_max_discard_sectors(q, max_discard_sectors);