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authorArnd Bergmann <arnd@arndb.de>2016-01-20 15:02:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-01-20 17:09:18 -0800
commit545b5e2ad4771d23d4c67d0bcc18babd2070df13 (patch)
tree1266db263a455f969f7b3fa74366939547de722a /drivers/memstick
parent8e99469ab0f821bea77625cd4775ca529d4ca7d4 (diff)
memstick: use sector_div instead of do_div
do_div is the wrong way to divide a sector_t, as it is less efficient when sector_t is 32-bit wide. With the upcoming do_div optimizations, the kernel starts warning about this: drivers/memstick/core/ms_block.c: In function 'msb_io_work': include/asm-generic/div64.h:207:28: warning: comparison of distinct pointer types lacks a cast This changes the code to use sector_div instead, which always produces optimal code. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/memstick')
-rw-r--r--drivers/memstick/core/ms_block.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/memstick/core/ms_block.c b/drivers/memstick/core/ms_block.c
index 24f2f8473dee..84abf9d3c24e 100644
--- a/drivers/memstick/core/ms_block.c
+++ b/drivers/memstick/core/ms_block.c
@@ -1909,7 +1909,7 @@ static void msb_io_work(struct work_struct *work)
lba = blk_rq_pos(msb->req);
sector_div(lba, msb->page_size / 512);
- page = do_div(lba, msb->pages_in_block);
+ page = sector_div(lba, msb->pages_in_block);
if (rq_data_dir(msb->req) == READ)
error = msb_do_read_request(msb, lba, page, sg,

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