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-rw-r--r--qemu-char.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/qemu-char.c b/qemu-char.c
index 74c60e11a0..a9fc50481a 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -160,7 +160,9 @@ int qemu_chr_be_can_write(CharDriverState *s)
void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
{
- s->chr_read(s->handler_opaque, buf, len);
+ if (s->chr_read) {
+ s->chr_read(s->handler_opaque, buf, len);
+ }
}
int qemu_chr_fe_get_msgfd(CharDriverState *s)