hw/char/cmsdk-apb-uart.c: Accept more input after character read

The character frontend needs to be notified that the uart receive buffer
is empty and ready to handle another character.

Previously, the uart only worked correctly when receiving one character
at a time.

Signed-off-by: Patrick Oppenlander <patrick.oppenlander@gmail.com>
Message-id: CAEg67GkRTw=cXei3o9hvpxG_L4zSrNzR0bFyAgny+sSEUb_kPw@mail.gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/hw/char/cmsdk-apb-uart.c b/hw/char/cmsdk-apb-uart.c
index 9c0929d8a2..ddfbb25c24 100644
--- a/hw/char/cmsdk-apb-uart.c
+++ b/hw/char/cmsdk-apb-uart.c
@@ -157,6 +157,7 @@ static uint64_t uart_read(void *opaque, hwaddr offset, unsigned size)
         r = s->rxbuf;
         s->state &= ~R_STATE_RXFULL_MASK;
         cmsdk_apb_uart_update(s);
+        qemu_chr_fe_accept_input(&s->chr);
         break;
     case A_STATE:
         r = s->state;