From: Mark Charlebois <charlebm@xxxxxxxxx> 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@xxxxxxxxx> Signed-off-by: Mark Charlebois <charlebm@xxxxxxxxx> Signed-off-by: Behan Webster <behanw@xxxxxxxxxxxxxxxxxx> Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx> Acked-by: Arnd Bergmann <arnd@xxxxxxxx> --- Resending https://patchwork.kernel.org/patch/4961631/ fs/compat_ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index 11d087b2b28e..6116d5275a3e 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 -- 2.12.2.715.g7642488e1d-goog
