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ehci: add sanity check for maxframes 

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20170703111549.10924-1-kraxel@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2017-07-03 13:15:49 +02:00
parent 6e2c463343
commit 2a7f263068
1 changed files with 5 additions and 0 deletions
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5
hw/usb/hcd-ehci.c
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@ -2483,6 +2483,11 @@ void usb_ehci_realize(EHCIState *s, DeviceState *dev, Error **errp)
NB_PORTS);
return;
}
if (s->maxframes < 8 || s->maxframes > 512) {
error_setg(errp, "maxframes %d out if range (8 .. 512)",
s->maxframes);
return;
}
usb_bus_new(&s->bus, sizeof(s->bus), s->companion_enable ?
&ehci_bus_ops_companion : &ehci_bus_ops_standalone, dev);