linux-kernel - Re: [PATCH v1.1] gpiolib: append SFI helpers for GPIO API

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Message-ID: <1370262387.2025.25.camel@joe-AO722>
Date:	Mon, 03 Jun 2013 05:26:27 -0700
From:	Joe Perches <joe@...ches.com>
To:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:	Ryan Mallon <rmallon@...il.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@...el.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Len Brown <lenb@...nel.org>, linux-kernel@...r.kernel.org,
	David Cohen <david.a.cohen@...el.com>,
	Grant Likely <grant.likely@...aro.org>
Subject: Re: [PATCH v1.1] gpiolib: append SFI helpers for GPIO API

On Mon, 2013-06-03 at 11:16 +0300, Andy Shevchenko wrote:
> On Sun, 2013-06-02 at 19:06 -0700, Joe Perches wrote: 
> > On Mon, 2013-06-03 at 11:59 +1000, Ryan Mallon wrote:
> > > On 31/05/13 19:27, Andy Shevchenko wrote:
> > > > +	sfi_gpio_table = kmalloc(num * sizeof(*pentry), GFP_KERNEL);
> > > Use kcalloc when you have a size and a count.
> > kmalloc_array unless you want zero'ed memory
> One proposed to use kmemdup to clean up a bit. What do you think?

Seems correct to use kmemdup but what validates num?

It seems like a possible error path exists there regardless
of whether kmemdup is used or not.


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