From: David S. Miller <davem@davemloft.net>
Date: Wed, 26 Mar 2008 11:25:00 +0000 (-0700)
Subject: [SPARC64]: Fix __get_cpu_var in preemption-enabled area.
X-Git-Tag: firefly_0821_release~21856^2~4
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=69072f6e8e4bd4799d2a54e4ff8771d0657512c1;p=firefly-linux-kernel-4.4.55.git

[SPARC64]: Fix __get_cpu_var in preemption-enabled area.

Reported by Mariusz Kozlowski.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/arch/sparc64/mm/tlb.c b/arch/sparc64/mm/tlb.c
index 3f10fc921b00..a0f000b293de 100644
--- a/arch/sparc64/mm/tlb.c
+++ b/arch/sparc64/mm/tlb.c
@@ -23,10 +23,11 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers) = { 0, };
 
 void flush_tlb_pending(void)
 {
-	struct mmu_gather *mp = &__get_cpu_var(mmu_gathers);
+	struct mmu_gather *mp;
 
 	preempt_disable();
 
+	mp = &__get_cpu_var(mmu_gathers);
 	if (mp->tlb_nr) {
 		flush_tsb_user(mp);