Starting a qemu with an sclp console and pressing a key very early
can result in
"qemu-system-s390x: hw/s390x/sclpconsole.c:60: receive_from_chr_layer:
Assertion `scon->iov' failed."
Lets make sure that the init process is finished, since the iov is
allocated after CHR_EVENT_OPENED by also checking for scon->iov.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
/* Return number of bytes that fit into iov buffer */
static int chr_can_read(void *opaque)
{
- int can_read;
SCLPConsole *scon = opaque;
- can_read = SIZE_BUFFER_VT220 - scon->iov_data_len;
-
- return can_read;
+ return scon->iov ? SIZE_BUFFER_VT220 - scon->iov_data_len : 0;
}
/* Receive n bytes from character layer, save in iov buffer,