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usb-storage: cancel I/O on reset 

When resetting the usb-storage device we'll have to carefully cancel
and clear any requests which might be in flight, otherwise we'll confuse
the state machine.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-01-04 18:13:54 +01:00
parent 7279a85f37
commit 24a5bbe1c8
1 changed files with 12 additions and 0 deletions
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12
hw/usb-msd.c
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@ -278,6 +278,18 @@ static void usb_msd_handle_reset(USBDevice *dev)
MSDState *s = (MSDState *)dev;
DPRINTF("Reset\n");
if (s->req) {
scsi_req_cancel(s->req);
}
assert(s->req == NULL);
if (s->packet) {
USBPacket *p = s->packet;
s->packet = NULL;
p->result = USB_RET_STALL;
usb_packet_complete(dev, p);
}
s->mode = USB_MSDM_CBW;
}