linux-kernel - Re: [PATCH] iio: adc: cpcap: fix incorrect validation

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Date:   Sun, 19 Nov 2017 11:34:16 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Tony Lindgren <tony@...mide.com>
Cc:     Sebastian Reichel <sre@...nel.org>, Pan Bian <bianpan2016@....com>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Rob Herring <robh@...nel.org>, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iio: adc: cpcap: fix incorrect validation

On Mon, 13 Nov 2017 10:49:03 -0800
Tony Lindgren <tony@...mide.com> wrote:

> * Sebastian Reichel <sre@...nel.org> [171112 18:30]:
> > Hi,
> > 
> > On Mon, Nov 13, 2017 at 12:01:20AM +0800, Pan Bian wrote:  
> > > Function platform_get_irq_byname() returns a negative error code on
> > > failure, and a zero or positive number on success. However, in function
> > > cpcap_adc_probe(), positive IRQ numbers are also taken as error cases.
> > > Use "if (ddata->irq < 0)" instead of "if (!ddata->irq)" to validate the
> > > return value of platform_get_irq_byname().
> > > 
> > > Signed-off-by: Pan Bian <bianpan2016@....com>
> > > ---  
> > 
> > Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.co.uk>  
> 
> Acked-by: Tony Lindgren <tony@...mide.com>

Applied to the fixes-togreg branch of iio.git.

Thanks,

Jonathan