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Merge pull request #2128 from lymzzyh/master

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[components][USB][Device][Core]fix the device_qualifier error respond on fullspeed
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Bernard Xiong 2018-12-27 17:39:40 +08:00 committed by GitHub
commit e70cece9b5
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1 changed files with 12 additions and 1 deletions
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13
components/drivers/usb/usbdevice/core/core.c
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@ -194,7 +194,18 @@ static rt_err_t _get_descriptor(struct udevice* device, ureq_t setup)
_get_string_descriptor(device, setup);
break;
case USB_DESC_TYPE_DEVICEQUALIFIER:
_get_qualifier_descriptor(device, setup);
/* If a full-speed only device (with a device descriptor version number equal to 0200H) receives a
GetDescriptor() request for a device_qualifier, it must respond with a request error. The host must not make
a request for an other_speed_configuration descriptor unless it first successfully retrieves the
device_qualifier descriptor. */
if(device->dcd->device_is_hs)
{
_get_qualifier_descriptor(device, setup);
}
else
{
rt_usbd_ep0_set_stall(device);
}
break;
case USB_DESC_TYPE_OTHERSPEED:
_get_config_descriptor(device, setup);