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Date:	Mon, 07 Apr 2014 15:10:47 -0400 (EDT)
From:	David Miller <>
Subject: Re: [PATCH] net/at91_ether: avoid NULL pointer dereference

From: Gilles Chanteperdrix <>
Date: Sun,  6 Apr 2014 20:37:44 +0200

> The at91_ether driver calls macb_mii_init passing a 'struct macb'
> structure whose tx_clk member is initialized to 0. However,
> macb_handle_link_change() expects tx_clk to be the result of
> a call to clk_get, and so IS_ERR(tx_clk) to be true if the clock
> is invalid. This causes an oops when booting Linux 3.14 on the
> csb637 board. The following changes avoids this.
> Signed-off-by: Gilles Chanteperdrix <>

Applied and queued up for -stable, thanks!
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