Look at serial.c:
#if (LINUX_VERSION_CODE > 0x2032D && defined(CONFIG_DEVFS_FS))
serial_driver.name = "tts/%d";
#else
serial_driver.name = "ttyS";
#endif
tty_name will just print "ttyS". So the transition for this case
was fixed->broken.
>
> No, originally tty_name() did it, and then I shifted it to the
> drivers. I don't recall the reason, but it was necessary. So I don't
> want this changed.
Oh dear. Why cannot devfs expand the minor part itself?
It looks like all the drivers need to be given a %d, as Ivan suggests. And we
need to audit all uses to make sure nobody is doing printk(driver.name);
I think it would be better to drop the printf control construct from the
names altogether.
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