netdev - Re: [PATCH] ethtool: fix ethtool_get_regs() to work with zero length registers

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Date:	Wed, 20 Jul 2011 13:38:09 +0200
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Kalle Valo <kvalo@....qualcomm.com>
Cc:	netdev@...r.kernel.org, linux-wireless@...r.kernel.org
Subject: Re: [PATCH] ethtool: fix ethtool_get_regs() to work with zero
 length registers

On Wed, 2011-07-20 at 12:18 +0300, Kalle Valo wrote:
> cfg80211 exports zero length register size as it currently only uses
> struct ethtool_regs.version to export struct wiphy.hw_version.
[...]

The ethtool_regs::version field represents the version of the register
dump format.  This may or may not relate to a hardware version.

If you don't actually provide a register dump then don't implement this
operation.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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