powerpc/mm: Fix fallthrough bug in hpte_decode

We should not fallthrough different case statements in hpte_decode. Add
break statement to break out of the switch. The regression is introduced by
dcda287a9b26309ae43a091d0ecde16f8f61b4c0 "powerpc/mm: Simplify hpte_decode"

Reported-by: Paul Mackerras <[email protected]>
Signed-off-by: Aneesh Kumar K.V <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>

diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c
index 3f0c30ae4791db7597c3fac74740e09e0fb3b7c1..0530ff78c023fa2fcdfcf6ca6a45d4f34dba2840 100644 (file)
--- a/arch/powerpc/mm/hash_native_64.c
+++ b/arch/powerpc/mm/hash_native_64.c
@@ -554,6 +554,7 @@ static void hpte_decode(struct hash_pte *hpte, unsigned long slot,
                        seg_off |= vpi << shift;
                }
                *vpn = vsid << (SID_SHIFT - VPN_SHIFT) | seg_off >> VPN_SHIFT;
+               break;
        case MMU_SEGSIZE_1T:
                /* We only have 40 - 23 bits of seg_off in avpn */
                seg_off = (avpn & 0x1ffff) << 23;
@@ -563,6 +564,7 @@ static void hpte_decode(struct hash_pte *hpte, unsigned long slot,
                        seg_off |= vpi << shift;
                }
                *vpn = vsid << (SID_SHIFT_1T - VPN_SHIFT) | seg_off >> VPN_SHIFT;
+               break;
        default:
                *vpn = size = 0;
        }