Commit 6e191f7b authored Apr 06, 2010 by Anton Blanchard Committed by Linus Torvalds Apr 07, 2010

devmem: handle class_create() failure



I hit this when we had a bug in IDR for a few days.  Basically sysfs would
fail to create new inodes since it uses an IDR and therefore class_create
would fail.

While we are unlikely to see this fail we may as well handle it instead of
oopsing.

Signed-off-by: Anton Blanchard <anton@samba.org>
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 70655c06

drivers/char/mem.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -908,6 +908,9 @@ static int __init chr_dev_init(void)
		printk("unable to get major %d for memory devs\n", MEM_MAJOR);

		mem_class = class_create(THIS_MODULE, "mem");
		if (IS_ERR(mem_class))
		return PTR_ERR(mem_class);

		mem_class->devnode = mem_devnode;
		for (minor = 1; minor < ARRAY_SIZE(devlist); minor++) {
		if (!devlist[minor].name)

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