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authorNamhyung Kim <namhyung@gmail.com>2011-05-25 02:11:27 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-25 17:39:07 +0200
commitbb005a59e08733bb416126dc184f73120fc6366b (patch)
treef02e152c9f1af2c979b11ff4b3fcc7820b5644f5 /mm/nommu.c
parentmm: nommu: fix a potential memory leak in do_mmap_private() (diff)
downloadlinux-bb005a59e08733bb416126dc184f73120fc6366b.tar.xz
linux-bb005a59e08733bb416126dc184f73120fc6366b.zip
mm: nommu: fix a compile warning in do_mmap_pgoff()
Because 'ret' is declared as int, not unsigned long, no need to cast the error contants into unsigned long. If you compile this code on a 64-bit machine somehow, you'll see following warning: CC mm/nommu.o mm/nommu.c: In function `do_mmap_pgoff': mm/nommu.c:1411: warning: overflow in implicit constant conversion Signed-off-by: Namhyung Kim <namhyung@gmail.com> Acked-by: Greg Ungerer <gerg@uclinux.org> Cc: David Howells <dhowells@redhat.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
-rw-r--r--mm/nommu.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/nommu.c b/mm/nommu.c
index 57ae6126b29a..92e1a47d1e52 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1376,15 +1376,15 @@ unsigned long do_mmap_pgoff(struct file *file,
if (capabilities & BDI_CAP_MAP_DIRECT) {
addr = file->f_op->get_unmapped_area(file, addr, len,
pgoff, flags);
- if (IS_ERR((void *) addr)) {
+ if (IS_ERR_VALUE(addr)) {
ret = addr;
- if (ret != (unsigned long) -ENOSYS)
+ if (ret != -ENOSYS)
goto error_just_free;
/* the driver refused to tell us where to site
* the mapping so we'll have to attempt to copy
* it */
- ret = (unsigned long) -ENODEV;
+ ret = -ENODEV;
if (!(capabilities & BDI_CAP_MAP_COPY))
goto error_just_free;