compat: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through.

Signed-off-by Gustavo A. R. Silva <[email protected]>

---
 include/linux/compat.h | 3 +++
 1 file changed, 3 insertions(+)

include/linux/compat.h +3 -1

index d30e4db..06e7747 100644
@@ -488,8 +488,11 @@ put_compat_sigset(compat_sigset_t __user *compat, const sigset_t *set,
        compat_sigset_t v;
        switch (_NSIG_WORDS) {
        case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
+               /* fall through */
        case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
+               /* fall through */
        case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
+               /* fall through */
        case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0];
        }
        return copy_to_user(compat, &v, size) ? -EFAULT : 0;
--

2.7.4