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| author | Arnd Bergmann <arnd@arndb.de> | 2016-01-20 15:02:15 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-20 17:09:18 -0800 |
| commit | 545b5e2ad4771d23d4c67d0bcc18babd2070df13 (patch) | |
| tree | 1266db263a455f969f7b3fa74366939547de722a /drivers | |
| parent | 8e99469ab0f821bea77625cd4775ca529d4ca7d4 (diff) | |
| download | linux-stable-545b5e2ad4771d23d4c67d0bcc18babd2070df13.tar.gz linux-stable-545b5e2ad4771d23d4c67d0bcc18babd2070df13.tar.bz2 linux-stable-545b5e2ad4771d23d4c67d0bcc18babd2070df13.zip | |
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')
| -rw-r--r-- | drivers/memstick/core/ms_block.c | 2 |
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, |