Patchwork imx21ads : Fix overlapping static i/o mappings

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Submitter Jaccon Bastiaansen
Date April 30, 2012, 9:53 a.m.
Message ID <1335779623-30383-1-git-send-email-jaccon.bastiaansen@gmail.com>
Download mbox | patch
Permalink /patch/155826/
State New
Headers show

Comments

Jaccon Bastiaansen - April 30, 2012, 9:53 a.m.
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 <jaccon.bastiaansen@gmail.com>
---
 arch/arm/mach-imx/mach-mx21ads.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
Sascha Hauer - May 9, 2012, 7:29 a.m.
On Mon, Apr 30, 2012 at 11:53:43AM +0200, Jaccon Bastiaansen wrote:
> 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 <jaccon.bastiaansen@gmail.com>

Applied, thanks. Please add a ARM i.MX prefix next time to you subject.
Also, added a Cc stable.

Sascha

> ---
>  arch/arm/mach-imx/mach-mx21ads.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/arm/mach-imx/mach-mx21ads.c b/arch/arm/mach-imx/mach-mx21ads.c
> index e432d4a..4460d25 100644
> --- 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))
> -- 
> 1.7.1
> 
>

Patch

diff --git a/arch/arm/mach-imx/mach-mx21ads.c b/arch/arm/mach-imx/mach-mx21ads.c
index e432d4a..4460d25 100644
--- 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))