Commit 6e191f7b authored by Anton Blanchard's avatar Anton Blanchard Committed by Linus Torvalds

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: default avatarAnton Blanchard <anton@samba.org>
Reviewed-by: default avatarWu Fengguang <fengguang.wu@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 70655c06
...@@ -908,6 +908,9 @@ static int __init chr_dev_init(void) ...@@ -908,6 +908,9 @@ static int __init chr_dev_init(void)
printk("unable to get major %d for memory devs\n", MEM_MAJOR); printk("unable to get major %d for memory devs\n", MEM_MAJOR);
mem_class = class_create(THIS_MODULE, "mem"); mem_class = class_create(THIS_MODULE, "mem");
if (IS_ERR(mem_class))
return PTR_ERR(mem_class);
mem_class->devnode = mem_devnode; mem_class->devnode = mem_devnode;
for (minor = 1; minor < ARRAY_SIZE(devlist); minor++) { for (minor = 1; minor < ARRAY_SIZE(devlist); minor++) {
if (!devlist[minor].name) if (!devlist[minor].name)
......
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