hw: ehci: check return value of 'usb_packet_map'
If 'usb_packet_map' fails, we should stop to process the usb request. Signed-off-by: Li Qiang <liq3ea@163.com> Message-Id: <20200812161727.29412-1-liq3ea@163.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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@ -1373,7 +1373,10 @@ static int ehci_execute(EHCIPacket *p, const char *action)
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spd = (p->pid == USB_TOKEN_IN && NLPTR_TBIT(p->qtd.altnext) == 0);
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usb_packet_setup(&p->packet, p->pid, ep, 0, p->qtdaddr, spd,
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(p->qtd.token & QTD_TOKEN_IOC) != 0);
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usb_packet_map(&p->packet, &p->sgl);
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if (usb_packet_map(&p->packet, &p->sgl)) {
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qemu_sglist_destroy(&p->sgl);
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return -1;
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}
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p->async = EHCI_ASYNC_INITIALIZED;
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}
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@ -1453,7 +1456,10 @@ static int ehci_process_itd(EHCIState *ehci,
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if (ep && ep->type == USB_ENDPOINT_XFER_ISOC) {
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usb_packet_setup(&ehci->ipacket, pid, ep, 0, addr, false,
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(itd->transact[i] & ITD_XACT_IOC) != 0);
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usb_packet_map(&ehci->ipacket, &ehci->isgl);
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if (usb_packet_map(&ehci->ipacket, &ehci->isgl)) {
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qemu_sglist_destroy(&ehci->isgl);
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return -1;
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}
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usb_handle_packet(dev, &ehci->ipacket);
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usb_packet_unmap(&ehci->ipacket, &ehci->isgl);
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} else {
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