diff --git a/[refs] b/[refs]
index e9942af6d9a4..e74e62debc79 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f92d0dc95d137c0abe7d1478d6e7d2cf4ca5fce8
+refs/heads/master: 8bbd9f04b7d982d1c6aeb5c08f5983b3d0b9e2fe
diff --git a/trunk/arch/arm64/kernel/perf_event.c b/trunk/arch/arm64/kernel/perf_event.c
index 9ba33c40cdf8..1e49e5eb81e9 100644
--- a/trunk/arch/arm64/kernel/perf_event.c
+++ b/trunk/arch/arm64/kernel/perf_event.c
@@ -1336,7 +1336,6 @@ void perf_callchain_user(struct perf_callchain_entry *entry,
 		return;
 	}
 
-	perf_callchain_store(entry, regs->pc);
 	tail = (struct frame_tail __user *)regs->regs[29];
 
 	while (entry->nr < PERF_MAX_STACK_DEPTH &&
diff --git a/trunk/arch/powerpc/mm/hugetlbpage.c b/trunk/arch/powerpc/mm/hugetlbpage.c
index 237c8e5f2640..77fdd2cef33b 100644
--- a/trunk/arch/powerpc/mm/hugetlbpage.c
+++ b/trunk/arch/powerpc/mm/hugetlbpage.c
@@ -592,8 +592,14 @@ static void hugetlb_free_pmd_range(struct mmu_gather *tlb, pud_t *pud,
 	do {
 		pmd = pmd_offset(pud, addr);
 		next = pmd_addr_end(addr, end);
-		if (pmd_none_or_clear_bad(pmd))
+		if (!is_hugepd(pmd)) {
+			/*
+			 * if it is not hugepd pointer, we should already find
+			 * it cleared.
+			 */
+			WARN_ON(!pmd_none_or_clear_bad(pmd));
 			continue;
+		}
 #ifdef CONFIG_PPC_FSL_BOOK3E
 		/*
 		 * Increment next by the size of the huge mapping since
diff --git a/trunk/arch/tile/lib/exports.c b/trunk/arch/tile/lib/exports.c
index a93b02a25222..4385cb6fa00a 100644
--- a/trunk/arch/tile/lib/exports.c
+++ b/trunk/arch/tile/lib/exports.c
@@ -84,6 +84,4 @@ uint64_t __ashrdi3(uint64_t, unsigned int);
 EXPORT_SYMBOL(__ashrdi3);
 uint64_t __ashldi3(uint64_t, unsigned int);
 EXPORT_SYMBOL(__ashldi3);
-int __ffsdi2(uint64_t);
-EXPORT_SYMBOL(__ffsdi2);
 #endif