On Tue, Apr 05 2016, Alan Stern wrote: > Suppose one usb_function is carrying out an I/O operation while > another one in the same config gets a Set-Interface request from the > host. That cannot happen. A single instance of mass_storage cannot¹ be added twice to the same configuration. ¹ To be more precise, not via configfs. A legacy gadget could do that, but that would be a bug in that legacy driver, not f_mass_storage. Moreover, no current legacy gadgets do that though so IMO this is an academic discussion. -- Best regards ミハウ “𝓶𝓲𝓷𝓪86” ナザレヴイツ «If at first you don’t succeed, give up skydiving» -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html