netdev - [PATCH 2/2] gianfar: Fix potential oops during OF address translation

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Message-ID: <20100423171244.GB2140@oksana.dev.rtsoft.ru>
Date:	Fri, 23 Apr 2010 21:12:44 +0400
From:	Anton Vorontsov <avorontsov@...sta.com>
To:	David Miller <davem@...emloft.net>
Cc:	Sandeep Gopalpet <Sandeep.Kumar@...escale.com>,
	netdev@...r.kernel.org, linuxppc-dev@...abs.org
Subject: [PATCH 2/2] gianfar: Fix potential oops during OF address
 translation

gianfar driver may pass NULL pointer to the of_translate_address(),
which may lead to a kernel oops. Fix this by using of_iomap(), which
is also much simpler and shorter.

Signed-off-by: Anton Vorontsov <avorontsov@...sta.com>
---
 drivers/net/gianfar.c |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)

diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 080d1ce..df49af3 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -549,12 +549,8 @@ static int gfar_parse_group(struct device_node *np,
 		struct gfar_private *priv, const char *model)
 {
 	u32 *queue_mask;
-	u64 addr, size;
-
-	addr = of_translate_address(np,
-			of_get_address(np, 0, &size, NULL));
-	priv->gfargrp[priv->num_grps].regs = ioremap(addr, size);
 
+	priv->gfargrp[priv->num_grps].regs = of_iomap(np, 0);
 	if (!priv->gfargrp[priv->num_grps].regs)
 		return -ENOMEM;
 
-- 
1.7.0.5
--
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