diff options
| author | Brian Norris <computersforpeace@gmail.com> | 2014-07-22 02:08:03 (GMT) |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2014-08-19 18:53:09 (GMT) |
| commit | 537ab1bd47d6518e8a40207a80dd0c2c4bc43aed (patch) | |
| tree | 636bff54331b59d6e784ea5ce68fd548f3eb3904 /drivers/mtd/nand | |
| parent | 7a6f43958a53020f85818ff5c895623e88781fd6 (diff) | |
| download | linux-537ab1bd47d6518e8a40207a80dd0c2c4bc43aed.tar.xz | |
mtd: nand: fix integer widening problems
chip->pagebuf is a 32-bit type (int), so the shift will only be applied
as 32-bit. Fix this for 64-bit safety.
Caught by Coverity.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd/nand')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 1a27c2d..ae6e7c4 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2409,8 +2409,8 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, blockmask = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1; /* Invalidate the page cache, when we write to the cached page */ - if (to <= (chip->pagebuf << chip->page_shift) && - (chip->pagebuf << chip->page_shift) < (to + ops->len)) + if (to <= ((loff_t)chip->pagebuf << chip->page_shift) && + ((loff_t)chip->pagebuf << chip->page_shift) < (to + ops->len)) chip->pagebuf = -1; /* Don't allow multipage oob writes with offset */ |