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 <paulus@samba.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c
index 3f0c30ae4791..0530ff78c023 100644
--- 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;
         }