what is "temporary" about code in "__register_chrdev_region()"?

* what is "temporary" about code in "__register_chrdev_region()"?
@ 2009-07-17 13:44 Robert P. J. Day
  0 siblings, 0 replies; only message in thread
From: Robert P. J. Day @ 2009-07-17 13:44 UTC (permalink / raw)
  To: Linux Kernel Mailing List

  i was just perusing the code for that routine in fs/char_dev.c and
noticed the label that some of that code was, well, temporary:

        /* temporary */     [line 99]
        if (major == 0) {
                for (i = ARRAY_SIZE(chrdevs)-1; i > 0; i--) {
                        if (chrdevs[i] == NULL)
                                break;
                }

                if (i == 0) {
                        ret = -EBUSY;
                        goto out;
                }
                major = i;
                ret = major;
        }

  so what's "temporary" about it?  that it can (dynamically) handle a
major number of zero?  is that supposed to represent a first step in
migrating to alloc_chrdev_region(), or what?  i'm just curious,

rday
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Robert P. J. Day                               Waterloo, Ontario, CANADA

        Linux Consulting, Training and Annoying Kernel Pedantry.

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