Re: [PATCH 3/5]acpi:glue.c Fix warning: variable 'ret' set but not used

From: David Howells
Date: Mon Jun 28 2010 - 08:48:51 EST

Justin P. Mattock <justinmattock@xxxxxxxxx> wrote:

> + if (ret) {
> + printk(KERN_WARNING "dev%d: Failed to get exception\n", ret);
> + }

That's not a good warning because it's a meaningless string and you're passing
the error number to the dev%d.

Better would perhaps be:

"dev%d: Failed to create physical_node sysfs link: %d\n"

Note also that you're only checking the result of one sysfs_create_link().
You should probably check both.

Also you're introducing a pair of unnecessary braces as there's only one
statement in the if-body.

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