From: Marc-André Lureau <marcandre.lureau@redhat.com>
Date: Thu, 28 Mar 2024 10:20:51 +0000 (+0400)
Subject: hw/virtio: fix -Werror=maybe-uninitialized
X-Git-Tag: v9.2.0-rc0~64^2~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3073c6b99557042476add4ddbcc8c834ae70fce5;p=thirdparty%2Fqemu.git

hw/virtio: fix -Werror=maybe-uninitialized

../hw/virtio/vhost-shadow-virtqueue.c:545:13: error: ‘r’ may be used uninitialized [-Werror=maybe-uninitialized]

Set `r` to 0 at every loop, since we don't check vhost_svq_get_buf()
return value.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
---

diff --git a/hw/virtio/vhost-shadow-virtqueue.c b/hw/virtio/vhost-shadow-virtqueue.c
index fc5f408f778..3b2beaea24b 100644
--- a/hw/virtio/vhost-shadow-virtqueue.c
+++ b/hw/virtio/vhost-shadow-virtqueue.c
@@ -526,10 +526,10 @@ static void vhost_svq_flush(VhostShadowVirtqueue *svq,
 size_t vhost_svq_poll(VhostShadowVirtqueue *svq, size_t num)
 {
     size_t len = 0;
-    uint32_t r;
 
     while (num--) {
         int64_t start_us = g_get_monotonic_time();
+        uint32_t r = 0;
 
         do {
             if (vhost_svq_more_used(svq)) {