From: Andrzej Hajda <a.hajda@samsung.com>
Date: Thu, 24 Sep 2015 14:00:23 +0000 (+0200)
Subject: KVM: PPC: e500: fix handling local_sid_lookup result
X-Git-Tag: android-x86-6.0-r1~341^2~34^2~7
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=d4cd4f9586f87a5fc828b4c4698aa4faf56c96fc;p=android-x86%2Fkernel.git

KVM: PPC: e500: fix handling local_sid_lookup result

The function can return negative value.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index b29ce752c7d6..32fdab57d604 100644
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -237,7 +237,8 @@ void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500,
                            struct kvm_book3e_206_tlb_entry *gtlbe)
 {
 	struct vcpu_id_table *idt = vcpu_e500->idt;
-	unsigned int pr, tid, ts, pid;
+	unsigned int pr, tid, ts;
+	int pid;
 	u32 val, eaddr;
 	unsigned long flags;