linux-kernel - Re: [PATCH 2/3] mfd: cros_ec: Use the proper size when looking at the cros_ec

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Date:	Wed, 2 Jul 2014 08:23:38 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Doug Anderson <dianders@...omium.org>
Cc:	Wolfram Sang <wsa@...-dreams.de>, Mark Brown <broonie@...nel.org>,
	Vincent Palatin <vpalatin@...omium.org>,
	Bill Richardson <wfrichar@...omium.org>,
	Randall Spangler <rspangler@...omium.org>, sjg@...omium.org,
	afaerber@...e.de, stephan@...khronix.com, olof@...om.net,
	sameo@...ux.intel.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] mfd: cros_ec: Use the proper size when looking at
 the cros_ec_i2c result

On Fri, 27 Jun 2014, Doug Anderson wrote:

> We know how many bytes the EC should be sending us (which is also the
> number of bytes transferred) and also how many bytes the EC actually
> wanted to send to us.  When computing the checksum and copying back
> data let's make sure we take the lesser of the two of those.  We'll
> also complain if the EC tried to send us too many bytes.  The EC
> sending us too few bytes is legit for when we send the EC an invalid
> command.
> 
> This is based on similar code in cros_ec_spi.
> 
> Signed-off-by: Doug Anderson <dianders@...omium.org>
> ---
>  drivers/mfd/cros_ec_i2c.c | 15 ++++++++++++---
>  1 file changed, 12 insertions(+), 3 deletions(-)

Acked-by: Lee Jones <lee.jones@...aro.org>

Is this patch orthogonal i.e. can it be applied without the other two
patches?

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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