linux-kernel - Re: [patch net] sky2: fix rx filter setup on link up

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Message-ID: <20120922131445.611d794d@nehalam.linuxnetplumber.net>
Date:	Sat, 22 Sep 2012 13:14:45 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Jiri Pirko <jiri@...nulli.us>
Cc:	netdev@...r.kernel.org, davem@...emloft.net, mlindner@...vell.com,
	linux-kernel@...r.kernel.org
Subject: Re: [patch net] sky2: fix rx filter setup on link up

On Mon, 17 Sep 2012 17:10:17 +0200
Jiri Pirko <jiri@...nulli.us> wrote:

> +	sky2_write_rx_filter(sky2, filter);
> +	memcpy(sky2->rx_filter, filter, sizeof(sky2->rx_filter));

This isn't safe since rx_filter might be referred to from interrupt
context (ie link up PHY interrupt). Maybe using atomic64 would be
best.
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