From cf7330c759345de2efe9c0df7921189ac5ff11d3 Mon Sep 17 00:00:00 2001 From: Sebastian Tanase Date: Mon, 28 Jul 2014 13:39:14 +0200 Subject: [PATCH] pty: Fix byte loss bug when connecting to pty When trying to print data to the pty, we first check if it is connected. If not, we try to reconnect, but we drop the pending data even if we have successfully reconnected; this makes us lose the first byte of the very first transmission. This small fix addresses the issue by checking once more if the pty is connected after having tried to reconnect. Signed-off-by: Sebastian Tanase Signed-off-by: Gerd Hoffmann --- qemu-char.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/qemu-char.c b/qemu-char.c index d4f327ab6d..1a8d9aa543 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -1160,7 +1160,9 @@ static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len) if (!s->connected) { /* guest sends data, check for (re-)connect */ pty_chr_update_read_handler_locked(chr); - return 0; + if (!s->connected) { + return 0; + } } return io_channel_send(s->fd, buf, len); }