Sorry, this should go to the list as well (I just sent to Johannes Erdfelt):
On Wed, Jan 29, 2003 at 07:31:31PM +0100, okurth wrote: > On Wed, Jan 29, 2003 at 11:44:16AM -0500, Johannes Erdfelt wrote: > > On Wed, Jan 29, 2003, Oliver Kurth <[EMAIL PROTECTED]> wrote: > > > With my at76c503 driver, I get this error: > > > > This happens just after the usbdfu module (in at76c503 package) has > > > downloaded the firmware, in the probe() function. I guess one reason > > > might be that at that moment the device has changed its interfaces > > > and this confuses uhci. It does not happen on another host with > > > ohci. Haven't tried usb-uhci yet. > > > > > > Is this anything I have to worry about? Anything I can do in the driver? > > > > > > I looked at the relevant code of uhci_result_control() in uhci, but > > > I do not understand it yet. > > > > It's not because it's getting confused. The UHCI driver is at a lower > > layer than that. > > So low it can't get confused? ;-) > > > When you say "changed its interfaces", what do you mean? That you had > > switched alternate settings? You had switched configuration? > > I mean that the lsusb output differs: the interface class changes and > it gets two more bulk endpoints. See here: > > before: (just after plugging in) > > Bus 001 Device 005: ID 0d5c:a002 > Language IDs: none (invalid length string descriptor bf; len=0) > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 1.10 > bDeviceClass 254 > bDeviceSubClass 1 > bDeviceProtocol 0 > bMaxPacketSize0 8 > idVendor 0x0d5c > idProduct 0xa002 > bcdDevice 1.00 > iManufacturer 0 > iProduct 0 > iSerial 0 > bNumConfigurations 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 25 > bNumInterfaces 1 > bConfigurationValue 1 > iConfiguration 0 > bmAttributes 0x80 > MaxPower 500mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 0 > bInterfaceClass 254 > bInterfaceSubClass 1 > bInterfaceProtocol 0 > iInterface 0 > unknown descriptor type: 07 21 01 13 05 00 04 > Language IDs: none (invalid length string descriptor bf; len=0) > > > after the fw is loaded: > > Bus 001 Device 004: ID 0d5c:a002 > Language IDs: none (invalid length string descriptor bf; len=0) > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 1.10 > bDeviceClass 254 > bDeviceSubClass 1 > bDeviceProtocol 0 > bMaxPacketSize0 8 > idVendor 0x0d5c > idProduct 0xa002 > bcdDevice 1.00 > iManufacturer 0 > iProduct 0 > iSerial 0 > bNumConfigurations 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 32 > bNumInterfaces 1 > bConfigurationValue 1 > iConfiguration 0 > bmAttributes 0x80 > MaxPower 500mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 2 > bInterfaceClass 255 Vendor Specific Class > bInterfaceSubClass 0 > bInterfaceProtocol 255 > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x85 EP 5 IN > bmAttributes 2 > Transfer Type Bulk > Synch Type none > wMaxPacketSize 64 > bInterval 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x02 EP 2 OUT > bmAttributes 2 > Transfer Type Bulk > Synch Type none > wMaxPacketSize 64 > bInterval 0 > Language IDs: none (invalid length string descriptor bf; len=0) > > Too make it more clear, here is a diff: > > 1c1 > < Bus 001 Device 005: ID 0d5c:a002 > --- > > Bus 001 Device 004: ID 0d5c:a002 > 21c21 > < wTotalLength 25 > --- > > wTotalLength 32 > 32,35c32,35 > < bNumEndpoints 0 > < bInterfaceClass 254 > < bInterfaceSubClass 1 > < bInterfaceProtocol 0 > --- > > bNumEndpoints 2 > > bInterfaceClass 255 Vendor Specific Class > > bInterfaceSubClass 0 > > bInterfaceProtocol 255 > 37c37,54 > < unknown descriptor type: 07 21 01 13 05 00 04 > --- > > Endpoint Descriptor: > > bLength 7 > > bDescriptorType 5 > > bEndpointAddress 0x85 EP 5 IN > > bmAttributes 2 > > Transfer Type Bulk > > Synch Type none > > wMaxPacketSize 64 > > bInterval 0 > > Endpoint Descriptor: > > bLength 7 > > bDescriptorType 5 > > bEndpointAddress 0x02 EP 2 OUT > > bmAttributes 2 > > Transfer Type Bulk > > Synch Type none > > wMaxPacketSize 64 > > bInterval 0 > > Sorry for this long message. And, as I said, I do not know whether > that really is the problem, I thought it might be. And no, I did > not change the configuration. I do that later, after the error message. > But I get the error message when the device has just been plugged in, > so it does not know of any configuration change. > > Greetings, > Oliver > -- > An MTA for home users, notebooks and PDAs: http://masqmail.cx/masqmail/ > A driver for Atmel at76c503 based WLAN Adapters: http://masqmail.cx/at76c503/ -- An MTA for home users, notebooks and PDAs: http://masqmail.cx/masqmail/ A driver for Atmel at76c503 based WLAN Adapters: http://masqmail.cx/at76c503/
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