From mboxrd@z Thu Jan  1 00:00:00 1970
From: Russell King - ARM Linux <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
Subject: Re: [PATCH v4 1/9] phy: add
	phy_get_bus_width()/phy_set_bus_width() calls
Date: Thu, 12 Dec 2013 11:27:15 +0000
Message-ID: <20131212112715.GK4360@n2100.arm.linux.org.uk>
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To: Matt Porter <mporter-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>, Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>, Kishon Vijay Abraham I <kishon-l0cyMroinI0@public.gmane.org>, Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>, Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>, Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>, Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>, Ian Campbell <ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>, Christian Daudt <bcm-xK7y4jjYLqYh9ZMKESR00Q@public.gmane.org>, Paul Zimmerman <paulz-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>, Devicetree List <devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Kamil Debski <k.debski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>, Linaro Patches <patches-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Tomasz Figa <t.figa-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>, Linux USB List <linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Linux Kernel Mailing List <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Kyungmin Park <kyungmin.park-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>, Linux ARM Kernel List <linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>
List-Id: devicetree@vger.kernel.org

On Thu, Dec 12, 2013 at 06:18:29AM -0500, Matt Porter wrote:
>  /**
> + * struct phy_attrs - represents phy attributes
> + * @bus_width: Data path width implemented by PHY
> + */
> +struct phy_attrs {
> +	u32			bus_width;

Why u32?

>  int phy_power_off(struct phy *phy);
> +static inline u32 phy_get_bus_width(struct phy *phy)
> +{
> +	return phy->attrs.bus_width;
...
>  
> +static inline u32 phy_get_bus_width(struct phy *phy)
> +{
> +	return -ENOSYS;

Why u32, especially as you're returning a negative number here.

If the bus width is a small integer (I'm assuming you don't have up to
2^30 bus signals) then what's wrong with it being an 'int' ?
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