Re: [PATCH 2/7] usb: fsl_udc_core: check return value ofcreate_proc_read_entry()

From: Vasiliy Kulikov
Date: Sun Aug 01 2010 - 02:20:01 EST

On Sat, Jul 31, 2010 at 21:17 +0200, Dan Carpenter wrote:
> On Sat, Jul 31, 2010 at 09:38:20PM +0400, Kulikov Vasiliy wrote:
> > create_proc_read_entry() may fail, if so return -ENOMEM.
> >
> It can fail, but also we return NULL if procfs is disabled. I haven't
> looked at it very carefully, would this patch break the module if procfs
> was disabled?
Probably you are right, but many drivers in tree compare return value
with NULL. Some of them interpret this as error, some of them simply
call pr_warn("Hmm, I cannot create file in proc, strange..."). Maybe
there is more simplier way to check it without #ifdefs?

> The same applies to the similar patches in this set.
> regards,
> dan carpenter
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