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scsi: avoid assertion failure on VERIFY command

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A verify command is not an actual read (we do not implement
compare mode) and thus does not have an AIOCB attached.  Do
not crash in scsi_dma_complete.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-04-08 18:50:15 +02:00
parent 09dada4003
commit ef8489d459
1 changed files with 14 additions and 5 deletions
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19
hw/scsi/scsi-disk.c
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@ -244,14 +244,15 @@ done:
}
}
static void scsi_dma_complete(void *opaque, int ret)
static void scsi_dma_complete_noio(void *opaque, int ret)
{
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
assert(r->req.aiocb != NULL);
r->req.aiocb = NULL;
bdrv_acct_done(s->qdev.conf.bs, &r->acct);
if (r->req.aiocb != NULL) {
r->req.aiocb = NULL;
bdrv_acct_done(s->qdev.conf.bs, &r->acct);
}
if (r->req.io_canceled) {
goto done;
}
@ -277,6 +278,14 @@ done:
}
}
static void scsi_dma_complete(void *opaque, int ret)
{
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
assert(r->req.aiocb != NULL);
scsi_dma_complete_noio(opaque, ret);
}
static void scsi_read_complete(void * opaque, int ret)
{
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
@ -496,7 +505,7 @@ static void scsi_write_data(SCSIRequest *req)
if (r->req.cmd.buf[0] == VERIFY_10 || r->req.cmd.buf[0] == VERIFY_12 ||
r->req.cmd.buf[0] == VERIFY_16) {
if (r->req.sg) {
scsi_dma_complete(r, 0);
scsi_dma_complete_noio(r, 0);
} else {
scsi_write_complete(r, 0);
}