On Wed, 22 Jul 2009, Alan Cox wrote: > > The device is going away, so there's no point in updating the > > permissions on the device file. The correct thing to do is to delete > > the file. > > However someone has the file open still what happens if the disconnect > races fchmod() The same thing that happens if the disconnect races fchmod() when nobody has the file open -- whatever that is. > A lot of drivers don't reuse minor numbers at all nowdays for exactly > these reasons. The tty layer can't yet cope with that however. Why not? Sure, eventually numbers will have to be reused, but not in the short term. (Unless your system has about as many serial ports as possible minor numbers.) > I raise it as a point of discussion. I'm not sure what the right answer > is. Okay, if enough people end up thinking the patch shouldn't be accepted then so be it... We'll see. But if that's the case then we should merge a different patch, one that forces minor numbers not to be reused even if the device file isn't held open. Shall I start up a flame-war^Wdiscussion about this on LKML? Alan Stern -- 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
