netdev - Re: [patch] e1000e, igbvf: fix default message level

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Date:	Sat, 10 Mar 2012 23:06:29 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Dan Carpenter <dan.carpenter@...cle.com>
CC:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Bruce Allan <bruce.w.allan@...el.com>,
	Carolyn Wyborny <carolyn.wyborny@...el.com>,
	Don Skidmore <donald.c.skidmore@...el.com>,
	Greg Rose <gregory.v.rose@...el.com>,
	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>,
	Alex Duyck <alexander.h.duyck@...el.com>,
	John Ronciak <john.ronciak@...el.com>,
	"David S. Miller" <davem@...emloft.net>,
	<e1000-devel@...ts.sourceforge.net>, <netdev@...r.kernel.org>,
	<kernel-janitors@...r.kernel.org>
Subject: Re: [patch] e1000e, igbvf: fix default message level

On Sat, 2012-03-10 at 11:49 +0300, Dan Carpenter wrote:
> The intent here was to enable both NETIF_MSG_DRV and NETIF_MSG_PROBE
> messages, but in the original code only the NETIF_MSG_DRV bit was set.
> 
> NETIF_MSG_DRV and NETIF_MSG_PROBE are bits 0 and 1, they are not
> supposed to be used to do a shift.  I think the confusion is because
> the msg_enable can also be controlled through ethtool which passes a bit
> number that is used to do a bit shift.
[...]

No, the ethtool interface also uses a mask.

However netif_msg_init() is commonly used to initialise the msg_enable
mask based on a module parameter that's a bit number.

Ben.

-- 
Ben Hutchings, Staff 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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