This is a note to let you know that I've just added the patch titled
net/at91_ether: avoid NULL pointer dereference
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-at91_ether-avoid-null-pointer-dereference.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Apr 10 20:31:47 PDT 2014
From: Gilles Chanteperdrix <gilles.chanteperdrix@xxxxxxxxxxx>
Date: Sun, 6 Apr 2014 20:37:44 +0200
Subject: net/at91_ether: avoid NULL pointer dereference
From: Gilles Chanteperdrix <gilles.chanteperdrix@xxxxxxxxxxx>
[ Upstream commit c293fb785bdda64d88f197e6758a3c16ae83e569 ]
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 <gilles.chanteperdrix@xxxxxxxxxxx>
Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/cadence/at91_ether.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/ethernet/cadence/at91_ether.c
+++ b/drivers/net/ethernet/cadence/at91_ether.c
@@ -342,6 +342,9 @@ static int __init at91ether_probe(struct
}
clk_enable(lp->pclk);
+ lp->hclk = ERR_PTR(-ENOENT);
+ lp->tx_clk = ERR_PTR(-ENOENT);
+
/* Install the interrupt handler */
dev->irq = platform_get_irq(pdev, 0);
res = devm_request_irq(&pdev->dev, dev->irq, at91ether_interrupt, 0, dev->name, dev);
Patches currently in stable-queue which might be from gilles.chanteperdrix@xxxxxxxxxxx are
queue-3.14/net-at91_ether-avoid-null-pointer-dereference.patch
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