[PATCH 3.12 003/127] MIPS: KVM: Fix unused variable build warning

From: Jiri Slaby
Date: Fri Nov 25 2016 - 03:31:12 EST


From: Nicholas Mc Guire <hofrat@xxxxxxxxx>

3.12-stable review patch. If anyone has any objections, please let me know.

===============

commit 5f508c43a7648baa892528922402f1e13f258bd4 upstream.

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

Signed-off-by: Nicholas Mc Guire <hofrat@xxxxxxxxx>
Link: http://lkml.org/lkml/2015/5/8/422
Cc: Gleb Natapov <gleb@xxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: James Hogan <james.hogan@xxxxxxxxxx>
Cc: kvm@xxxxxxxxxxxxxxx
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Patchwork: https://patchwork.linux-mips.org/patch/9993/
Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
[james.hogan@xxxxxxxxxx: Backport to 3.10..3.16]
Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
arch/mips/kvm/kvm_mips_emul.c | 6 ------
1 file changed, 6 deletions(-)

diff --git a/arch/mips/kvm/kvm_mips_emul.c b/arch/mips/kvm/kvm_mips_emul.c
index 7f3fb19d2156..779a376c4cce 100644
--- a/arch/mips/kvm/kvm_mips_emul.c
+++ b/arch/mips/kvm/kvm_mips_emul.c
@@ -1655,7 +1655,6 @@ 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);
@@ -1663,11 +1662,6 @@ 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;
--
2.10.2