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Subject[ 03/61] ARM i.MX imx21ads: Fix overlapping static i/o mappings
3.4-stable review patch.  If anyone has any objections, please let me know.


From: Jaccon Bastiaansen <>

commit 350ab15bb2ffe7103bc6bf6c634f3c5b286eaf2a upstream.

The statically defined I/O memory regions for the i.MX21 on chip
peripherals and the on board I/O peripherals of the i.MX21ADS board
overlap. This results in a kernel crash during startup. This is fixed
by reducing the memory range for the on board I/O peripherals to the
actually required range.

Signed-off-by: Jaccon Bastiaansen <>
Signed-off-by: Sascha Hauer <>
Signed-off-by: Greg Kroah-Hartman <>

arch/arm/mach-imx/mach-mx21ads.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/mach-imx/mach-mx21ads.c
+++ b/arch/arm/mach-imx/mach-mx21ads.c
@@ -32,7 +32,7 @@
* Memory-mapped I/O on MX21ADS base board
#define MX21ADS_MMIO_BASE_ADDR 0xf5000000
-#define MX21ADS_MMIO_SIZE SZ_16M
+#define MX21ADS_MMIO_SIZE 0xc00000

#define MX21ADS_REG_ADDR(offset) (void __force __iomem *) \
(MX21ADS_MMIO_BASE_ADDR + (offset))

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