Messages in this thread | | | Date | Fri, 17 Jul 2009 09:44:38 -0400 (EDT) | From | "Robert P. J. Day" <> | Subject | what is "temporary" about code in "__register_chrdev_region()"? |
| |
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 --
======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA
Linux Consulting, Training and Annoying Kernel Pedantry.
Web page: http://crashcourse.ca Twitter: http://twitter.com/rpjday "Kernel Newbie Corner" column @ linux.com: http://cli.gs/WG6WYX ========================================================================
| |