linux-kernel - [ 028/108] ARM: imx: armadillo5x0: Fix illegal register access

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Date:	Sun, 07 Oct 2012 23:59:02 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Fabio Estevam <fabio.estevam@...escale.com>,
	Arnd Bergmann <arnd@...db.de>,
	Sascha Hauer <s.hauer@...gutronix.de>
Subject: [ 028/108] ARM: imx: armadillo5x0: Fix illegal register access

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

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

From: Fabio Estevam <fabio.estevam@...escale.com>

commit 35495173e1df621dff0e9a244accbe32cd28a98f upstream.

Since commit eb92044eb (ARM i.MX3: Make ccm base address a variable )
it is necessary to pass the CCM register base as a variable.

Fix the CCM register access in mach-armadillo5x0 by passing mx3_ccm_base and
avoid illegal accesses.

Also applies to v3.5

Reported-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Fabio Estevam <fabio.estevam@...escale.com>
Acked-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/arm/mach-imx/mach-armadillo5x0.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-imx/mach-armadillo5x0.c b/arch/arm/mach-imx/mach-armadillo5x0.c
index 2c6ab32..5985ed1 100644
--- a/arch/arm/mach-imx/mach-armadillo5x0.c
+++ b/arch/arm/mach-imx/mach-armadillo5x0.c
@@ -526,7 +526,8 @@ static void __init armadillo5x0_init(void)
 	imx31_add_mxc_nand(&armadillo5x0_nand_board_info);
 
 	/* set NAND page size to 2k if not configured via boot mode pins */
-	__raw_writel(__raw_readl(MXC_CCM_RCSR) | (1 << 30), MXC_CCM_RCSR);
+	__raw_writel(__raw_readl(mx3_ccm_base + MXC_CCM_RCSR) |
+					(1 << 30), mx3_ccm_base + MXC_CCM_RCSR);
 
 	/* RTC */
 	/* Get RTC IRQ and register the chip */


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