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authorRasmus Villemoes <mail@rasmusvillemoes.dk>2013-06-05 21:09:39 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-06-06 23:54:08 +0400
commit71811f3271cd986e223be44830e5961056561ac3 (patch)
tree3056f805a67870d36c19a361cf805b44d33aae3e /drivers/char/mem.c
parent29ddae2a40883640941932f73eb3d15535c3f4a2 (diff)
downloadlinux-71811f3271cd986e223be44830e5961056561ac3.tar.xz
drivers: char: mem: use IS_ERR_VALUE() in memory_lseek()
Use IS_ERR_VALUE() instead of comparing the new offset to a hard-coded value of -MAX_ERRNO (which is also off-by-one due to the use of ~ instead of -). Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char/mem.c')
-rw-r--r--drivers/char/mem.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 1ccbe9482faa..2ca6d7844ad9 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -745,7 +745,7 @@ static loff_t memory_lseek(struct file *file, loff_t offset, int orig)
offset += file->f_pos;
case SEEK_SET:
/* to avoid userland mistaking f_pos=-9 as -EBADF=-9 */
- if ((unsigned long long)offset >= ~0xFFFULL) {
+ if (IS_ERR_VALUE((unsigned long long)offset)) {
ret = -EOVERFLOW;
break;
}