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Diffstat (limited to 'hw/char/cadence_uart.c')
-rw-r--r--hw/char/cadence_uart.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/hw/char/cadence_uart.c b/hw/char/cadence_uart.c
index c856fc30b2..65179fa500 100644
--- a/hw/char/cadence_uart.c
+++ b/hw/char/cadence_uart.c
@@ -292,9 +292,12 @@ static gboolean cadence_uart_xmit(GIOChannel *chan, GIOCondition cond,
memmove(s->tx_fifo, s->tx_fifo + ret, s->tx_count);
if (s->tx_count) {
- int r = qemu_chr_fe_add_watch(s->chr, G_IO_OUT|G_IO_HUP,
- cadence_uart_xmit, s);
- assert(r);
+ guint r = qemu_chr_fe_add_watch(s->chr, G_IO_OUT|G_IO_HUP,
+ cadence_uart_xmit, s);
+ if (!r) {
+ s->tx_count = 0;
+ return FALSE;
+ }
}
uart_update_status(s);