summary refs log tree commit diff stats
path: root/hw/char/lm32_uart.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/char/lm32_uart.c')
-rw-r--r--hw/char/lm32_uart.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/hw/char/lm32_uart.c b/hw/char/lm32_uart.c
index b5c760dda3..be93697a39 100644
--- a/hw/char/lm32_uart.c
+++ b/hw/char/lm32_uart.c
@@ -178,6 +178,8 @@ static void uart_write(void *opaque, hwaddr addr,
     switch (addr) {
     case R_RXTX:
         if (s->chr) {
+            /* XXX this blocks entire thread. Rewrite to use
+             * qemu_chr_fe_write and background I/O callbacks */
             qemu_chr_fe_write_all(s->chr, &ch, 1);
         }
         break;