The Chardev events are listed in the QEMUChrEvent enum. To be
able to use this enum in the IOEventHandler typedef, we need to
explicit when frontends ignore some events, to silent GCC the
following warnings:

    CC      hw/usb/redirect.o
  hw/usb/redirect.c: In function ‘usbredir_chardev_event’:
  hw/usb/redirect.c:1361:5: error: enumeration value ‘CHR_EVENT_BREAK’ not 
handled in switch [-Werror=switch]
   1361 |     switch (event) {
        |     ^~~~~~
  hw/usb/redirect.c:1361:5: error: enumeration value ‘CHR_EVENT_MUX_IN’ not 
handled in switch [-Werror=switch]
  hw/usb/redirect.c:1361:5: error: enumeration value ‘CHR_EVENT_MUX_OUT’ not 
handled in switch [-Werror=switch]
  cc1: all warnings being treated as errors

Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
---
Cc: Gerd Hoffmann <[email protected]>
---
 hw/usb/redirect.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c
index e0f5ca6f81..acc376cc95 100644
--- a/hw/usb/redirect.c
+++ b/hw/usb/redirect.c
@@ -1370,6 +1370,9 @@ static void usbredir_chardev_event(void *opaque, int 
event)
         DPRINTF("chardev close\n");
         qemu_bh_schedule(dev->chardev_close_bh);
         break;
+    default:
+        /* Ignore */
+        break;
     }
 }
 
-- 
2.21.0


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