On Wednesday 16 January 2008, Thomi Aurel RUAG A wrote: > > Alternatively, the issue might be the way the SET_LINE_CODING or > > SET_CONTROL_LINE_STATE requests are rejected by the current serial > > gadget code. Fixing that should be a straightforward patchlet. If > > you're NOT getting one of the warning messages about unsupported > > messages from gs_setup, that option becomes unlikely.
Were you getting such messages from the kernel? "dmesg" would show them if you were. > I logged the USB transactions with a USB Sniffer. > During my analysis (still ongoing) i found that in the "abstract control > manangement functional descriptor" defines the bmCapabilities as 0 (zero) > (found in the configuration descriptor). > This means that non of the following features are supported: > - Set_Comm_Feature > - Clear_Comm_Feature > - Get_Comm_Feature > - Set_Line_Coding > - Get_Line_Coding > - Set_Control_Line_State > - Serial_State notification > - Send_Break > - Network_Connection > (found on USB Class Definitons for Communication Devices, Version 1.1, > Table 28, page 36, Rev. 1999-01-19) > I found the definition of the descriptor in the source file > (drivers/usb/gadget/serial.c) on line 429, where the bmCapabilities were > defined. > So, setting that to another value wouldn't be tricky but what does > it means for the according features? Set it to zero and see if it helps. Maybe MS-Windoes demands som of those features; I wouldn't know. But again, if you're not already getting warning messages, that's not the issue. > You wrote "Fixing that should be a straightforward patchlet" could you > explain that in more detail? The FIXME comments there say exactly what should happen. There's similar control-OUT code in g_zero and the RNDIS code in g_ether. But again: if you're not already getting those warnings, don't bother looking since that's not the problem. - Dave - To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
