Commit d915f9d607 for qemu.org

commit d915f9d607880e1b05293f098a8988be7a496abc
Author: Evgeny Kolmakov <randomjack94dev@gmail.com>
Date:   Thu Jul 9 23:27:22 2026 +0300

    hw/hyperv/vmbus: Use QEMU_LOCK_GUARD()

    Replace manual qemu_mutex_(un)lock() calls with
    QEMU_LOCK_GUARD() to remove 'goto out' code

    Signed-off-by: Evgeny Kolmakov <randomjack94dev@gmail.com>
    Reviewed-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
    Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
    Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/hw/hyperv/vmbus.c b/hw/hyperv/vmbus.c
index c5259d1a76..ab99f082d1 100644
--- a/hw/hyperv/vmbus.c
+++ b/hw/hyperv/vmbus.c
@@ -1525,14 +1525,12 @@ static VMBusChannel *find_channel(VMBus *vmbus, uint32_t id)
 static int enqueue_incoming_message(VMBus *vmbus,
                                     const struct hyperv_post_message_input *msg)
 {
-    int ret = 0;
     uint8_t idx, prev_size;

-    qemu_mutex_lock(&vmbus->rx_queue_lock);
+    QEMU_LOCK_GUARD(&vmbus->rx_queue_lock);

     if (vmbus->rx_queue_size == HV_MSG_QUEUE_LEN) {
-        ret = -ENOBUFS;
-        goto out;
+        return -ENOBUFS;
     }

     prev_size = vmbus->rx_queue_size;
@@ -1544,9 +1542,7 @@ static int enqueue_incoming_message(VMBus *vmbus,
     if (!prev_size) {
         vmbus_resched(vmbus);
     }
-out:
-    qemu_mutex_unlock(&vmbus->rx_queue_lock);
-    return ret;
+    return 0;
 }

 static uint16_t vmbus_recv_message(const struct hyperv_post_message_input *msg,
@@ -2097,10 +2093,10 @@ static void process_message(VMBus *vmbus)
     void *msgdata;
     uint32_t msglen;

-    qemu_mutex_lock(&vmbus->rx_queue_lock);
+    QEMU_LOCK_GUARD(&vmbus->rx_queue_lock);

     if (!vmbus->rx_queue_size) {
-        goto unlock;
+        return;
     }

     hv_msg = &vmbus->rx_queue[vmbus->rx_queue_head];
@@ -2149,8 +2145,6 @@ out:
     vmbus->rx_queue_head %= HV_MSG_QUEUE_LEN;

     vmbus_resched(vmbus);
-unlock:
-    qemu_mutex_unlock(&vmbus->rx_queue_lock);
 }

 static const struct {