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From: Viresh Kumar <viresh.kumar@st.com>
To: Stephen Warren <swarren@wwwdotorg.org>
Cc: "dmitry.torokhov@gmail.com" <dmitry.torokhov@gmail.com>,
	"devicetree-discuss@lists.ozlabs.org"
	<devicetree-discuss@lists.ozlabs.org>,
	spear-devel <spear-devel@list.st.com>,
	"viresh.linux@gmail.com" <viresh.linux@gmail.com>,
	"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
	"sr@denx.de" <sr@denx.de>
Subject: Re: [PATCH V2 1/2] Input: of_keymap: Introduce matrix_keypad_of_build_keymap()
Date: Thu, 29 Mar 2012 13:53:53 +0530	[thread overview]
Message-ID: <4F741C19.4080703@st.com> (raw)
In-Reply-To: <4F738261.1060002@wwwdotorg.org>

On 3/29/2012 2:58 AM, Stephen Warren wrote:
> so the DT parsing can easily overflow this, and is driven by
> user-supplied data.

Got it. This check is must.

> I think you'll need to pass input_dev->keycodesize

you mean keycodemax here?

> into matrix_keypad_of_build_keymap() to achieve the overall
> range-checking.

Will do that.

> but also checking col against (1<<row_shift) would be
> needed to make sure the individual "fields" of the array index don't
> overflow too.

Ok. Please cross check V3 to verify, i got you comments correctly.

-- 
viresh

  reply	other threads:[~2012-03-29  8:25 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-27  5:38 [PATCH V2 1/2] Input: of_keymap: Introduce matrix_keypad_of_build_keymap() Viresh Kumar
2012-03-27  5:38 ` [PATCH V2 2/2] Input: spear-keyboard: add device tree bindings Viresh Kumar
2012-03-27  7:13   ` Dmitry Torokhov
2012-03-27  7:37     ` Viresh Kumar
2012-03-27  7:51       ` Dmitry Torokhov
2012-03-27  8:05         ` Viresh Kumar
2012-03-27 15:46   ` Stephen Warren
2012-03-27 15:45 ` [PATCH V2 1/2] Input: of_keymap: Introduce matrix_keypad_of_build_keymap() Stephen Warren
2012-03-28  4:55   ` Viresh Kumar
2012-03-28 21:28     ` Stephen Warren
2012-03-29  8:23       ` Viresh Kumar [this message]
     [not found] ` <4aba6f2cd9f050f419660555bdb661915c1be9b1.1332826100.git.viresh.kumar-qxv4g6HH51o@public.gmane.org>
2012-03-28  9:54   ` [PATCH V3 2/2] Input: spear-keyboard: add device tree bindings Viresh Kumar

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