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chardev: fix parallel device can't be reconnect 

Parallel device don't register be->chr_can_read function, but remote
disconnect event is handled in chr_read.So connected parallel device
can not detect remote disconnect event. The chardevs with chr_can_read=NULL
has the same problem.

Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Reviewed-by: Wang Yechao <wang.yechao255@zte.com.cn>
Reviewed-by: Jiang Biao <jiang.biao2@zte.com.cn>
Message-Id: <1499874119-67558-1-git-send-email-peng.hao2@zte.com.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peng Hao 2017-07-12 23:41:59 +08:00 committed by Paolo Bonzini
parent 5a6a1ad181
commit 98fab4c163
1 changed files with 6 additions and 0 deletions
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6
hw/char/parallel.c
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@ -503,6 +503,10 @@ static const VMStateDescription vmstate_parallel_isa = {
}
};
static int parallel_can_receive(void *opaque)
{
return 1;
}
static void parallel_isa_realizefn(DeviceState *dev, Error **errp)
{
@ -535,6 +539,8 @@ static void parallel_isa_realizefn(DeviceState *dev, Error **errp)
isa_init_irq(isadev, &s->irq, isa->isairq);
qemu_register_reset(parallel_reset, s);
qemu_chr_fe_set_handlers(&s->chr, parallel_can_receive, NULL,
NULL, NULL, s, NULL, true);
if (qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_READ_STATUS, &dummy) == 0) {
s->hw_driver = 1;
s->status = dummy;