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authorGeert Uytterhoeven <geert@linux-m68k.org>2013-11-04 10:21:05 +0100
committerJames Bottomley <JBottomley@Parallels.com>2013-12-19 07:39:03 -0800
commitef80d1e18b014af08741cf688e3fdda1fb71363f (patch)
tree6dc63b9742606bd600dffed96c78af5036a59a4d /drivers/scsi/sd.c
parentb28d108b7f9f3b51574edbf90505c467f1066c6e (diff)
[SCSI] sd: Do not call do_div() with a 64-bit divisor
do_div() is meant for divisions of 64-bit number by 32-bit numbers. Passing 64-bit divisor types caused issues in the past on 32-bit platforms, cfr. commit ea077b1b96e073eac5c3c5590529e964767fc5f7 ("m68k: Truncate base in do_div()"). As scsi_device.sector_size is unsigned (int), factor should be unsigned int, too. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/sd.c')
-rw-r--r--drivers/scsi/sd.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 35a785609364..9846c6ab2aaa 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1626,7 +1626,7 @@ static unsigned int sd_completed_bytes(struct scsi_cmnd *scmd)
end_lba <<= 1;
} else {
/* be careful ... don't want any overflows */
- u64 factor = scmd->device->sector_size / 512;
+ unsigned int factor = scmd->device->sector_size / 512;
do_div(start_lba, factor);
do_div(end_lba, factor);
}