Hello there, I wanted to know if someone had any idea on why some nokia phones don't setup properly as mass storage devices in some configurations, before I start digging with usbmon & the kernel code.
* Working configuration: x86/2.6.23.1, with ehci + uhci The phone (N73) sets up properly, but gets bound to the uhci driver. * Not working configuration: mipseb/2.6.21.5, ehci+ohci Appears transiently in usb/devices then gets removed after the following kernel errors: usb 2-1: new full speed USB device using ohci_hcd and address 3 usb 2-1: config index 0 descriptor too short (expected 9, got 0) usb 2-1: can't read configurations, error -22 usb 2-1: new full speed USB device using ohci_hcd and address 4 usb 2-1: no configurations usb 2-1: can't read configurations, error -22 usb 2-1: new full speed USB device using ohci_hcd and address 5 usb 2-1: device descriptor read/8, error -62 usb 2-1: device not accepting address 5, error -62 usb 2-1: new full speed USB device using ohci_hcd and address 6 usb 2-1: device descriptor read/8, error -62 usb 2-1: device not accepting address 6, error -62 .... The questions are: - The phone itself declares to be usb 2.0: T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=0421 ProdID=0487 Rev= 1.00 S: Product=Nokia N73 C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=03(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms Why does it get bound to the uhci driver at full speed, whereas it should (for me) be bound to the ehci at high speed ? When I plug other devices (e.g. flash key), on the same port, they are properly recognized as 2.0 and bound to the ehci driver, not its companion ohci/uhci. I don't feel it is normal... Where does the ehci/companion driver selection occur, and what is the logic behind that ? - Did someone test such devices in mass storage mode with ohci drivers ? May this be an endianness issue on the ohci driver ? Note that I have tested almost all userland possibilities: - with/without the ohci/ehci drivers - old_scheme_first - other cable/device Hoping anybodyhas a clue, I may provide any additional info you may find relevant. sincerely, -- Eric Estievenart ------------------------------------------------------------------------- SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
