host-libusb: Remove unused variable

Variable unconnected used in usb_host_auto_check function is only incremented
but never read as line where it is read was disabled since introducing the code.
This causes 'Unused but set variable' warning on Clang 15.0.1 compiler.

Removing the variable and disabled code to prevent the warning.

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <00df0db69ff9167d38bac81f6d03281955bd861a.1668009030.git.mrezanin@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
index 28f8af8941ff6db20283fcd85d23da120abc6cee..176868d3450775f43e47b38ee45118a8f21aa2be 100644 (file)
--- a/hw/usb/host-libusb.c
+++ b/hw/usb/host-libusb.c
@@ -1837,7 +1837,6 @@ static void usb_host_auto_check(void *unused)
     struct USBAutoFilter *f;
     libusb_device **devs = NULL;
     struct libusb_device_descriptor ddesc;
-    int unconnected = 0;
     int i, n;
 
     if (usb_host_init() != 0) {
@@ -1897,9 +1896,6 @@ static void usb_host_auto_check(void *unused)
         libusb_free_device_list(devs, 1);
 
         QTAILQ_FOREACH(s, &hostdevs, next) {
-            if (s->dh == NULL) {
-                unconnected++;
-            }
             if (s->seen == 0) {
                 if (s->dh) {
                     usb_host_close(s);
@@ -1908,17 +1904,6 @@ static void usb_host_auto_check(void *unused)
             }
             s->seen = 0;
         }
-
-#if 0
-        if (unconnected == 0) {
-            /* nothing to watch */
-            if (usb_auto_timer) {
-                timer_del(usb_auto_timer);
-                trace_usb_host_auto_scan_disabled();
-            }
-            return;
-        }
-#endif
     }
 
     if (!usb_vmstate) {