Hi, On Fri, Dec 14, 2012 at 06:22:27PM +0800, victor wrote: > > > Thanks. The driver's probe() can be called. Now when insmod > > > g_file_storage.ko, it says the file-backed storage gadget failed to > > > start. I have defined the udc_start() function in usb_gadget_ops > > > structure and added the udc_start() function. What else do I need to > add? > > > > > > Here is the message at console: > > > > > > # insmod kagen2_udc.ko > > > # insmod g_file_storage.ko file=/dev/mmcblk0 > > > gadget: controller 'kagen2_usb' not recognized > > > > this should have caught your attention!! Also, rebase to a newer kernel as > that > > message has already been dropped. > > > > The udc_start() function is being called now. Before this, it was not called > because of driver->max_speed checking in udc_start(). After udc_start(), > which function is to be called when the gadget device is connected to the > host PC? > > Thanks. I will look at the "controller 'kagen2_usb' not recognized" message. > The development is being done on arm9 architecture. I am afraid it is not > possible to move to a newer kernel now. fair enough. Just to help you out, I believe that message will be under drivers/usb/gadget/gadget_chips.h: http://git.kernel.org/?p=linux/kernel/git/balbi/usb.git;a=blob;f=drivers/usb/gadget/gadget_chips.h;h=a8855d0b7f3bdf19fbdc76eab8a25992f07884b0;hb=76e10d158efb6d4516018846f60c2ab5501900bc note that you must add your gadget_is_kagen2() and check for it on usb_gadget_controller_number(). Also keep in mind that this doesn't exist anymore for recent kernels. -- balbi
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