On Sun, 2008-12-28 at 10:34 +0100, Ivo van Doorn wrote:
> On Sunday 28 December 2008, Piter PUNK wrote:
> > If the those 148f:2573 USB devices doesn't exists or
> > if they exists and works fine with rt73usb, can we
> > remove 148f:2573 from rt2500usb?
>
> No we can't, you can blame manufacturers for shipping
> USB sticks with different chipsets but the exact same USB ID.
Maybe there are some hints on the USB level that would make it possible
to distinguish between the devices without loading the driver?
Something like the number of endpoints? Then we could ask USB
developers to provide a way to specify them in the USB devece table.
I have a device that works with rt73usb, but not rt2500usb. I'm
attaching the output of "lsusb -v" for the device. If we look at
similar information for other devices, we could find out how to
distinguish them.
--
Regards,
Pavel Roskin
Bus 001 Device 004: ID 148f:2573 Ralink Technology, Corp. RT2501USB Wireless Adapter
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x148f Ralink Technology, Corp.
idProduct 0x2573 RT2501USB Wireless Adapter
bcdDevice 0.01
iManufacturer 1 Ralink
iProduct 2 802.11 bg WLAN
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 300mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
