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scsi-generic: add missing reset handler 

Ensure that pending requests of a SCSI generic device are purged on
system reset. This also avoids calling a NULL function in lsi53c895a.
The lsi code was recently changed to call the .qdev.reset function.

Signed-off-by: Bernhard Kohl <bernhard.kohl@nsn.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Bernhard Kohl 2010-09-06 16:07:33 +02:00 committed by Kevin Wolf
parent 6f5f060b73
commit f8b6d67251
1 changed files with 19 additions and 2 deletions
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21
hw/scsi-generic.c
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@ -455,15 +455,31 @@ static int get_stream_blocksize(BlockDriverState *bdrv)
return (buf[9] << 16) | (buf[10] << 8) | buf[11];
}
static void scsi_destroy(SCSIDevice *d)
static void scsi_generic_purge_requests(SCSIGenericState *s)
{
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d);
SCSIGenericReq *r;
while (!QTAILQ_EMPTY(&s->qdev.requests)) {
r = DO_UPCAST(SCSIGenericReq, req, QTAILQ_FIRST(&s->qdev.requests));
if (r->req.aiocb) {
bdrv_aio_cancel(r->req.aiocb);
}
scsi_remove_request(r);
}
}
static void scsi_generic_reset(DeviceState *dev)
{
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev.qdev, dev);
scsi_generic_purge_requests(s);
}
static void scsi_destroy(SCSIDevice *d)
{
SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d);
scsi_generic_purge_requests(s);
blockdev_mark_auto_del(s->qdev.conf.bs);
}
@ -537,6 +553,7 @@ static SCSIDeviceInfo scsi_generic_info = {
.qdev.name = "scsi-generic",
.qdev.desc = "pass through generic scsi device (/dev/sg*)",
.qdev.size = sizeof(SCSIGenericState),
.qdev.reset = scsi_generic_reset,
.init = scsi_generic_initfn,
.destroy = scsi_destroy,
.send_command = scsi_send_command,