linux-kernel - Re: [PATCH] Generic WorkQueue Engine (GenWQE) device driver (v4)

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Message-ID: <20131030173615.GC20147@kroah.com>
Date:	Wed, 30 Oct 2013 10:36:15 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Frank Haverkamp <haver@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, arnd@...db.de,
	cody@...ux.vnet.ibm.com, schwidefsky@...ibm.com,
	utz.bacher@...ibm.com, mmarek@...e.cz, rmallon@...il.com,
	jsvogt@...ibm.com, MIJUNG@...ibm.com, cascardo@...ux.vnet.ibm.com,
	michael@...ra.de, Frank Haverkamp <haver@...t.ibm.com>
Subject: Re: [PATCH] Generic WorkQueue Engine (GenWQE) device driver (v4)

On Wed, Oct 30, 2013 at 10:32:58AM +0100, Frank Haverkamp wrote:
> +/*
> + * Module initialization and PCIe setup. Card health monitoring and
> + * recovery functionality. Character device creation and deletion are
> + * controlled from here.
> + *
> + * Please use the new sysfs interfaces to enable the VFs after PF
> + * driver loading.
> + *
> + * Enable VFs:
> + *   sudo sh -c 'echo 15 > /sys/bus/pci/devices/0000\:1b\:00.0/sriov_numvfs'
> + * or
> + *   sudo sh -c 'echo 15 > /sys/class/genwqe/genwqe0_card/device/sriov_numvfs'
> + * Disable VFs:
> + *   Write a 0 into the same sysfs entries.
> + */

Put this documentation somewhere a user has a _chance_ of reading it.
Digging it out of code comments is not ok.  Why isn't this in the ABI
file for the sysfs files?

thanks,

greg k-h
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