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Make sure the "wMaxPacketSize" limitations are respected.

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This commit is contained in:
Hans Petter Selasky 2012-09-27 15:45:24 +00:00
parent 19f9c619a2
commit 7a2275046d
1 changed files with 28 additions and 3 deletions
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31
sys/dev/usb/controller/dwc_otg.c
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@ -3974,9 +3974,34 @@ dwc_otg_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc,
return;
}
} else {
if (udev->speed != USB_SPEED_LOW &&
udev->speed != USB_SPEED_FULL &&
udev->speed != USB_SPEED_HIGH) {
uint16_t mps;
mps = UGETW(edesc->wMaxPacketSize);
/* Apply limitations of our USB host driver */
switch (udev->speed) {
case USB_SPEED_HIGH:
if (mps > 512) {
DPRINTF("wMaxPacketSize=0x%04x"
"is not supported\n", (int)mps);
/* not supported */
return;
}
break;
case USB_SPEED_FULL:
case USB_SPEED_LOW:
if (mps > 188) {
DPRINTF("wMaxPacketSize=0x%04x"
"is not supported\n", (int)mps);
/* not supported */
return;
}
break;
default:
DPRINTF("Invalid device speed\n");
/* not supported */
return;
}