KVM: Return an error code only as a constant in kvm_get_dirty_log_pro…

…tect() * Return an error code without storing it in an intermediate variable. * Delete the local variable "r" and the jump label "out" which became unnecessary with this refactoring. Signed-off-by: Markus Elfring <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
niw · Feb 17, 2017 · 58d6db3 · 58d6db3
1 parent f6a3b16
commit 58d6db3
Showing 1 changed file with 5 additions and 12 deletions.
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
@@ -1164,24 +1164,22 @@ int kvm_get_dirty_log_protect(struct kvm *kvm,
 {
 	struct kvm_memslots *slots;
 	struct kvm_memory_slot *memslot;
-	int r, i, as_id, id;
+	int i, as_id, id;
 	unsigned long n;
 	unsigned long *dirty_bitmap;
 	unsigned long *dirty_bitmap_buffer;
 
-	r = -EINVAL;
 	as_id = log->slot >> 16;
 	id = (u16)log->slot;
 	if (as_id >= KVM_ADDRESS_SPACE_NUM || id >= KVM_USER_MEM_SLOTS)
-		goto out;
+		return -EINVAL;
 
 	slots = __kvm_memslots(kvm, as_id);
 	memslot = id_to_memslot(slots, id);
 
 	dirty_bitmap = memslot->dirty_bitmap;
-	r = -ENOENT;
 	if (!dirty_bitmap)
-		goto out;
+		return -ENOENT;
 
 	n = kvm_dirty_bitmap_bytes(memslot);
 
@@ -1210,14 +1208,9 @@ int kvm_get_dirty_log_protect(struct kvm *kvm,
 	}
 
 	spin_unlock(&kvm->mmu_lock);
-
-	r = -EFAULT;
 	if (copy_to_user(log->dirty_bitmap, dirty_bitmap_buffer, n))
-		goto out;
-
-	r = 0;
-out:
-	return r;
+		return -EFAULT;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(kvm_get_dirty_log_protect);
 #endif