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authorMark Charlebois <charlebm@gmail.com>2017-04-28 15:15:12 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-04-08 12:12:44 +0200
commita9b2c4a8f4bfd960d8c2dbe70e73c903309050a3 (patch)
tree971e98e15d6ad78921cfe0fcf6af0bcd08d37601 /fs
parent00972acdcf70f21548d9aa7915f7ceacf87dcf05 (diff)
fs: compat: Remove warning from COMPATIBLE_IOCTL
commit 9280cdd6fe5b8287a726d24cc1d558b96c8491d7 upstream. cmd in COMPATIBLE_IOCTL is always a u32, so cast it so there isn't a warning about an overflow in XFORM. From: Mark Charlebois <charlebm@gmail.com> Signed-off-by: Mark Charlebois <charlebm@gmail.com> Signed-off-by: Behan Webster <behanw@converseincode.com> Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/compat_ioctl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index f2d7402abe02..93c8e4a4bbd3 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -833,7 +833,7 @@ static int compat_ioctl_preallocate(struct file *file,
*/
#define XFORM(i) (((i) ^ ((i) << 27) ^ ((i) << 17)) & 0xffffffff)
-#define COMPATIBLE_IOCTL(cmd) XFORM(cmd),
+#define COMPATIBLE_IOCTL(cmd) XFORM((u32)cmd),
/* ioctl should not be warned about even if it's not implemented.
Valid reasons to use this:
- It is implemented with ->compat_ioctl on some device, but programs