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USB: Don't specify Class/Subclass 0xff at device level

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Actually, at device level we want to specify 0, so we can select
individual Class/Subclass values at Interface values.

Table 9-8 of the USB2 Specification is quite clear about this.
This commit is contained in:
Harald Welte
2017-03-06 10:04:56 +01:00
parent 495a67da7d
commit eab7e456fe
1 changed files with 3 additions and 3 deletions
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6
firmware/libcommon/source/usb.c
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@@ -567,9 +567,9 @@ const USBDeviceDescriptor deviceDescriptor = {
.bLength = sizeof(USBDeviceDescriptor),
.bDescriptorType = USBGenericDescriptor_DEVICE,
.bcdUSB = USBDeviceDescriptor_USB2_00,
.bDeviceClass = 0xff,
.bDeviceSubClass = 0xff,
.bDeviceProtocol = 0xff,
.bDeviceClass = 0,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.bMaxPacketSize0 = BOARD_USB_ENDPOINTS_MAXPACKETSIZE(0),
.idVendor = BOARD_USB_VENDOR_ID,
.idProduct = BOARD_USB_PRODUCT_ID,