Hi Marek, On Sun, Nov 17, 2013 at 11:59:10PM +0100, Marek Vasut wrote: > Dear Peter Chen, > > > > Probe the usbmisc driver earlier, otherwise the ci_hdrc_imx.c will > > > get -EPROBE_DEFER from usbmisc when both are compiled into the kernel > > > and thus USB gadget mode won't work. > > > > Hi Marek, you know the root cause of it, you suggested using > > a better way to fix it. > > > > http://marc.info/?l=linux-usb&m=138060107809076&w=2 > > Argh, I see. So what's the solution here really ?
I think one solution here is to load the composite driver as a module, after you are sure the corresponding udc is already registered. Alternativly, we also have the configfs interface now. Look into: Documentation/usb/gadget_configfs.txt It should be possible to attach an udc to the gadget-driver afterwards with: echo $UDC_NAME > $CONFIGFS_HOME/usb_gadget/$GADGET_NAME/UDC Regards, Michael -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- 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
