[PATCH 05/24] ARM: imx: use __iomem pointers for MMIO

Fabio Estevam festevam at gmail.com
Fri Sep 14 18:31:46 EDT 2012


On Fri, Sep 14, 2012 at 6:34 PM, Arnd Bergmann <arnd at arndb.de> wrote:
> ARM is moving to stricter checks on readl/write functions,
> so we need to use the correct types everywhere.
>
> This found a bug in mach-armadillo5x0.c, where we attempt mmio
> on the MXC_CCM_RCSR address that is currently defined to 0xc
> and consequently causes an illegal address access.
...

>         /* 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);
> +       /* FIXME __raw_writel(__raw_readl(MXC_CCM_RCSR) | (1 << 30), MXC_CCM_RCSR); */

Good catch, the correct access would be:
__raw_readl(mx3_ccm_base + MXC_CCM_RCSR) ...

I will fix this after your series reaches linux-next.

Regards,

Fabio Estevam



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