MIPS: KVM: Fix unused variable build warning

commit 5f508c43a7648baa892528922402f1e13f258bd4 upstream.

As kvm_mips_complete_mmio_load() did not yet modify PC at this point
as James Hogans <james.hogan@imgtec.com> explained the curr_pc variable
and the comments along with it can be dropped.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Link: http://lkml.org/lkml/2015/5/8/422
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9993/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
[bwh: Backported to 3.16: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/arch/mips/kvm/kvm_mips_emul.c b/arch/mips/kvm/kvm_mips_emul.c
index 74381aa18b06adccbda80cef813aefaf3a4e4abe..f9ccf24d03c3c3081a6f197f7acdadd597f0313f 100644 (file)
--- a/arch/mips/kvm/kvm_mips_emul.c
+++ b/arch/mips/kvm/kvm_mips_emul.c
@@ -2172,7 +2172,6 @@ kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu, struct kvm_run *run)
 {
        unsigned long *gpr = &vcpu->arch.gprs[vcpu->arch.io_gpr];
        enum emulation_result er = EMULATE_DONE;
-       unsigned long curr_pc;
 
        if (run->mmio.len > sizeof(*gpr)) {
                printk("Bad MMIO length: %d", run->mmio.len);
@@ -2180,11 +2179,6 @@ kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu, struct kvm_run *run)
                goto done;
        }
 
-       /*
-        * Update PC and hold onto current PC in case there is
-        * an error and we want to rollback the PC
-        */
-       curr_pc = vcpu->arch.pc;
        er = update_pc(vcpu, vcpu->arch.pending_load_cause);
        if (er == EMULATE_FAIL)
                return er;