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hw: ehci: check return value of 'usb_packet_map'

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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>
This commit is contained in:
Li Qiang 2020-08-12 09:17:27 -07:00 committed by Gerd Hoffmann
parent dd8525472a
commit 2fdb42d840
1 changed files with 8 additions and 2 deletions
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10
hw/usb/hcd-ehci.c
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@ -1373,7 +1373,10 @@ static int ehci_execute(EHCIPacket *p, const char *action)
spd = (p->pid == USB_TOKEN_IN && NLPTR_TBIT(p->qtd.altnext) == 0);
usb_packet_setup(&p->packet, p->pid, ep, 0, p->qtdaddr, spd,
(p->qtd.token & QTD_TOKEN_IOC) != 0);
usb_packet_map(&p->packet, &p->sgl);
if (usb_packet_map(&p->packet, &p->sgl)) {
qemu_sglist_destroy(&p->sgl);
return -1;
}
p->async = EHCI_ASYNC_INITIALIZED;
}
@ -1453,7 +1456,10 @@ static int ehci_process_itd(EHCIState *ehci,
if (ep && ep->type == USB_ENDPOINT_XFER_ISOC) {
usb_packet_setup(&ehci->ipacket, pid, ep, 0, addr, false,
(itd->transact[i] & ITD_XACT_IOC) != 0);
usb_packet_map(&ehci->ipacket, &ehci->isgl);
if (usb_packet_map(&ehci->ipacket, &ehci->isgl)) {
qemu_sglist_destroy(&ehci->isgl);
return -1;
}
usb_handle_packet(dev, &ehci->ipacket);
usb_packet_unmap(&ehci->ipacket, &ehci->isgl);
} else {