From: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Date: Sat, 12 Dec 2020 05:13:02 +0000 (+0100)
Subject: block: drop dead assignments in loop_init()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=aeb2b0b1a3da5791d3b216e71ec72db7570f3571;p=linux.git

block: drop dead assignments in loop_init()

Commit 8410d38c2552 ("loop: use __register_blkdev to allocate devices on
demand") simplified loop_init(); so computing the range of the block region
is not required anymore and can be dropped.

Drop dead assignments in loop_init().

As compilers will detect these unneeded assignments and optimize this,
the resulting object code is identical before and after this change.

No functional change. No change in object code.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 22e59410b971f..a45248c6e319b 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -2316,7 +2316,6 @@ MODULE_ALIAS("devname:loop-control");
 static int __init loop_init(void)
 {
 	int i, nr;
-	unsigned long range;
 	struct loop_device *lo;
 	int err;
 
@@ -2353,13 +2352,10 @@ static int __init loop_init(void)
 	 * /dev/loop-control interface, or be instantiated by accessing
 	 * a 'dead' device node.
 	 */
-	if (max_loop) {
+	if (max_loop)
 		nr = max_loop;
-		range = max_loop << part_shift;
-	} else {
+	else
 		nr = CONFIG_BLK_DEV_LOOP_MIN_COUNT;
-		range = 1UL << MINORBITS;
-	}
 
 	err = misc_register(&loop_misc);
 	if (err < 0)