chardev: mark explicitly first argument as poisoned

Since commit 9894dc0cdcc397ee5b26370bc53da6d360a363c2 "char: convert
from GIOChannel to QIOChannel", the first argument to the watch callback
can actually be a QIOChannel, which is not a GIOChannel (but a QEMU
Object).

Even though we never used that pointer, change the callback type to warn
the users. Possibly a better fix later, we may want to store the
callback and call it from intermediary functions.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c
index 1ec909a63a..5f0ef9cb3b 100644
--- a/hw/usb/redirect.c
+++ b/hw/usb/redirect.c
@@ -270,7 +270,7 @@ static int usbredir_read(void *priv, uint8_t *data, int count)
     return count;
 }
 
-static gboolean usbredir_write_unblocked(GIOChannel *chan, GIOCondition cond,
+static gboolean usbredir_write_unblocked(void *do_not_use, GIOCondition cond,
                                          void *opaque)
 {
     USBRedirDevice *dev = opaque;