linux-kernel - Re: [PATCH] mfd: ti_am335x_tscadc: fix spin lock and reg

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]

Date:	Wed, 7 Aug 2013 09:40:54 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Zubair Lutfullah <zubair.lutfullah@...il.com>
Cc:	sameo@...ux.intel.com, linux-kernel@...r.kernel.org,
	gregkh@...uxfoundation.org, bigeasy@...utronix.de
Subject: Re: [PATCH] mfd: ti_am335x_tscadc: fix spin lock and reg_cache

On Mon, 05 Aug 2013, Zubair Lutfullah wrote:

> Reg_cache variable is used to lock step enable register
> from being accessed and written by both TSC and ADC
> at the same time.
> However, it isn't updated anywhere in the code at all.
> 
> If both TSC and ADC are used, eventually 1FFFF is always
> written enabling all 16 steps uselessly causing a mess.
> 
> Patch fixes it by correcting the locks and updates the
> variable by reading the step enable register
> 
> Signed-off-by: Zubair Lutfullah <zubair.lutfullah@...il.com>
> ---
>  drivers/mfd/ti_am335x_tscadc.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Better that it comes from somewhere.

Applied, thanks.

-- 
Lee Jones
Linaro ST-Ericsson Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
--
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/