netdev - Re: [PATCH net-next v2 05/10] drivers: base: Add device_find

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Message-Id: <20170112.162135.441956368122992032.davem@davemloft.net>
Date:   Thu, 12 Jan 2017 16:21:35 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     f.fainelli@...il.com
Cc:     netdev@...r.kernel.org, jason@...edaemon.net, andrew@...n.ch,
        sebastian.hesselbarth@...il.com,
        gregory.clement@...e-electrons.com, linux@...linux.org.uk,
        vivien.didelot@...oirfairelinux.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        gregkh@...uxfoundation.org
Subject: Re: [PATCH net-next v2 05/10] drivers: base: Add
 device_find_class()

From: Florian Fainelli <f.fainelli@...il.com>
Date: Wed, 11 Jan 2017 19:41:16 -0800

> Add a helper function to lookup a device reference given a class name.
> This is a preliminary patch to remove adhoc code from net/dsa/dsa.c and
> make it more generic.
> 
> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
> ---
>  drivers/base/core.c    | 19 +++++++++++++++++++
>  include/linux/device.h |  1 +
>  2 files changed, 20 insertions(+)
> 
> diff --git a/drivers/base/core.c b/drivers/base/core.c
> index 020ea7f05520..3dd6047c10d8 100644
> --- a/drivers/base/core.c
> +++ b/drivers/base/core.c
> @@ -2065,6 +2065,25 @@ struct device *device_find_child(struct device *parent, void *data,
>  }
>  EXPORT_SYMBOL_GPL(device_find_child);
>  
> +static int dev_is_class(struct device *dev, void *class)

I know you are just moving code, but this class argumnet is a string
and thus should be "char *" or even "const char *".