Am Donnerstag, den 10.08.2017, 07:56 +0100 schrieb Okash Khawaja: > Hi, > > struct usb_serial_device has probe and attach callbacks. After attach > is invoked, device minor numbers are allocated and then registered with > driver core. So attach callback doesn't know minor number. > > Can a usb-serial driver know about device minor number as soon as it is > registered with driver core? Merely registering a driver does not allocate a minor. And is the order of device enumeration is unknown at that time, it cannot know a minor number. You cannot make assumptions about driver load. Your driver was loaded. End of story. Register it with the proper subsystem. Regards Oliver -- 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
