linux-kernel - Re: [PATCH v2 2/4] da850-evm: add UI Expander pushbuttons

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <AANLkTimRbsmR6xMok8P_wXpQAd1Xykew6_pPhqUWGsEN@mail.gmail.com>
Date:	Mon, 22 Nov 2010 08:50:48 -0500
From:	Ben Gardiner <bengardiner@...ometrics.ca>
To:	"Nori, Sekhar" <nsekhar@...com>
Cc:	Kevin Hilman <khilman@...prootsystems.com>,
	"davinci-linux-open-source@...ux.davincidsp.com" 
	<davinci-linux-open-source@...ux.davincidsp.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	"Govindarajan, Sriramakrishnan" <srk@...com>,
	Paul Mundt <lethal@...ux-sh.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Alexander Clouter <alex@...riz.org.uk>,
	Chris Cordahi <christophercordahi@...ometrics.ca>
Subject: Re: [PATCH v2 2/4] da850-evm: add UI Expander pushbuttons

On Mon, Nov 22, 2010 at 6:49 AM, Nori, Sekhar <nsekhar@...com> wrote:
> On Fri, Nov 19, 2010 at 21:08:10, Ben Gardiner wrote:
>> [...]
>> By setting INPUT_POLLDEV default for the da850-evm users will get
>> functioning pushbuttons and switches with the default config but they
>> will be able to disable INPUT_POLLDEV or gpio-keys drivers in their
>> defconfig at their convenience.
>
> I guess we could also just modify the defconfig to switch on
> INPUT_POLLDEV? Since only gpio-keys functionality is affected
> by not enabling the correct options in kernel, it should be OK.

Yes -- only gpio-keys is affected but enabling the option does
introduce an additional .o file:

drivers/input/Makefile:obj-$(CONFIG_INPUT_POLLDEV)      += input-polldev.o

I agree that in its current state a user couls inadvertently disable
the gpio-keys support on da850-evm simply by disabling INPUT_POLLDEV
-- which is less than Ideal. How about I replace the current changes
to arch/arm/mach-davinci/Kconfig with:

config KEYBOARD_GPIO
        default MACH_DAVINCI_DA850_EVM
        select INPUT_POLLDEV

So 1) gpio-keys functionality is default for the da850evm and 2)
whenever gpio-keys is enabled so is INPUT_POLLDEV.

Best Regards,
Ben Gardiner

---
Nanometrics Inc.
http://www.nanometrics.ca
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/