linux-kernel - [PATCH 3.11 032/138] mtd: nuc900_nand: NULL dereference in nuc900_nand

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Message-Id: <1401795584-22664-33-git-send-email-luis.henriques@canonical.com>
Date:	Tue,  3 Jun 2014 12:37:58 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Dan Carpenter <dan.carpenter@...cle.com>,
	Brian Norris <computersforpeace@...il.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.11 032/138] mtd: nuc900_nand: NULL dereference in nuc900_nand_enable()

3.11.10.11 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit c69dbbf3335a21aae74376d7e5db50a486d52439 upstream.

Instead of writing to "nand->reg + REG_FMICSR" we write to "REG_FMICSR"
which is NULL and not a valid register.

Fixes: 8bff82cbc308 ('mtd: add nand support for w90p910 (v2)')
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Brian Norris <computersforpeace@...il.com>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/mtd/nand/nuc900_nand.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/nuc900_nand.c b/drivers/mtd/nand/nuc900_nand.c
index cd6be2ed53a8..14203f3bb0cd 100644
--- a/drivers/mtd/nand/nuc900_nand.c
+++ b/drivers/mtd/nand/nuc900_nand.c
@@ -225,7 +225,7 @@ static void nuc900_nand_enable(struct nuc900_nand *nand)
 	val = __raw_readl(nand->reg + REG_FMICSR);
 
 	if (!(val & NAND_EN))
-		__raw_writel(val | NAND_EN, REG_FMICSR);
+		__raw_writel(val | NAND_EN, nand->reg + REG_FMICSR);
 
 	val = __raw_readl(nand->reg + REG_SMCSR);
 
-- 
1.9.1

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