ide: remove wrong setting of BM_STATUS_INT

Similar to the case removed in commit 69c38b8f (ide/core: Remove explicit
setting of BM_STATUS_INT, 2011-05-19), the only remaining use of
add_status(..., BM_STATUS_INT) is for short PRDs.  The flag should
not be raised in this case.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NJohn Snow <jsnow@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

hw/ide/ahci.c

@@ -1107,10 +1107,6 @@ static int ahci_dma_add_status(IDEDMA *dma, int status)
     AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
     DPRINTF(ad->port_no, "set status: %x\n", status);
 
-    if (status & BM_STATUS_INT) {
-        ahci_trigger_irq(ad->hba, ad, PORT_IRQ_STAT_DSS);
-    }
-
     return 0;
 }
 

hw/ide/atapi.c

@@ -355,7 +355,6 @@ static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret)
 
 eot:
     bdrv_acct_done(s->bs, &s->acct);
-    s->bus->dma->ops->add_status(s->bus->dma, BM_STATUS_INT);
     ide_set_inactive(s);
 }