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-rw-r--r--hw/char/digic-uart.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/hw/char/digic-uart.c b/hw/char/digic-uart.c
index c7604e6766..e96a9b2d8d 100644
--- a/hw/char/digic-uart.c
+++ b/hw/char/digic-uart.c
@@ -77,6 +77,8 @@ static void digic_uart_write(void *opaque, hwaddr addr, uint64_t value,
switch (addr) {
case R_TX:
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;