linux-kernel - Re: [PATCH v2] counter: fix an IS

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Message-ID: <20220111203356.cnzpo4uyhnybm5cp@pengutronix.de>
Date:   Tue, 11 Jan 2022 21:33:56 +0100
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     William Breathitt Gray <vilhelm.gray@...il.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH v2] counter: fix an IS_ERR() vs NULL bug

On Tue, Jan 11, 2022 at 08:32:43PM +0300, Dan Carpenter wrote:
> There are 8 callers for devm_counter_alloc() and they all check for NULL
> instead of error pointers.  I think NULL is the better thing to return
> for allocation functions so update counter_alloc() and devm_counter_alloc()
> to return NULL instead of error pointers.
> 
> Fixes: c18e2760308e ("counter: Provide alternative counter registration functions")
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

Acked-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

Thanks
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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