linux-kernel - Re: [PATCH RESEND v3 1/7] Intel MIC Host Driver for X100 family.

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Date:	Thu, 5 Sep 2013 21:55:03 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Sudeep Dutt <sudeep.dutt@...el.com>
Cc:	Arnd Bergmann <arnd@...db.de>,
	Rusty Russell <rusty@...tcorp.com.au>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Rob Landley <rob@...dley.net>, linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	linux-doc@...r.kernel.org, Asias He <asias@...hat.com>,
	Nikhil Rao <nikhil.rao@...el.com>,
	Ashutosh Dixit <ashutosh.dixit@...el.com>,
	Caz Yokoyama <Caz.Yokoyama@...el.com>,
	Dasaratharaman Chandramouli 
	<dasaratharaman.chandramouli@...el.com>,
	Harshavardhan R Kharche <harshavardhan.r.kharche@...el.com>,
	"Yaozu (Eddie) Dong" <eddie.dong@...el.com>,
	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>
Subject: Re: [PATCH RESEND v3 1/7] Intel MIC Host Driver for X100 family.

Very minor nits, you can change this in a future add-on patch:

> +static DEVICE_ATTR(family, S_IRUGO, mic_show_family, NULL);

This should use DEVICE_ATTR_RO(), so that we don't have to audit the
permissions of your DEVICE_ATTR() files.

> +static DEVICE_ATTR(stepping, S_IRUGO, mic_show_stepping, NULL);

Same here.

> +static struct attribute *mic_default_attrs[] = {
> +	&dev_attr_family.attr,
> +	&dev_attr_stepping.attr,
> +
> +	NULL
> +};
> +
> +static struct attribute_group mic_attr_group = {
> +	.attrs = mic_default_attrs,
> +};
> +
> +static const struct attribute_group *__mic_attr_group[] = {
> +	&mic_attr_group,
> +	NULL
> +};

These last two structures can be replaced with:
ATTRIBUTE_GROUPS(mic_default);

> +void mic_sysfs_init(struct mic_device *mdev)
> +{
> +	mdev->attr_group = __mic_attr_group;
> +}

This is "odd", why not just export the data structure and reference it
in the other code?  The pci core does this, and so do other busses.

Anyway, it's not a big deal, just a bit strange to me.

thanks,

greg k-h
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