On Fri, Feb 18, 2011 at 06:05:24PM +0530, Santosh Shilimkar wrote:
> diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
> index 170c9bb..a8caee4 100644
> --- a/arch/arm/mm/cache-l2x0.c
> +++ b/arch/arm/mm/cache-l2x0.c
> @@ -67,18 +67,22 @@ static inline void l2x0_inv_line(unsigned long addr)
> writel_relaxed(addr, base + L2X0_INV_LINE_PA);
> }
>
> -#ifdef CONFIG_PL310_ERRATA_588369
> +#if defined(CONFIG_PL310_ERRATA_588369) ||
> defined(CONFIG_PL310_ERRATA_727915)
> static void debug_writel(unsigned long val)
> {
> - extern void omap_smc1(u32 fn, u32 arg);
> -
> - /*
> - * Texas Instrument secure monitor api to modify the
> - * PL310 Debug Control Register.
> - */
> - omap_smc1(0x100, val);
> + if (outer_cache.set_debug)
> + outer_cache.set_debug(val);
> + else
> + writel(val, l2x0_base + L2X0_DEBUG_CTRL);
> +}
I think changing this to:
#define debug_writel(val) outer_cache.set_debug(val)
static void l2x0_set_debug(unsigned long val)
{
writel(val, l2x0_base + L2X0_DEBUG_CTRL);
}
> +#else
> +/* Optimised out for non-errata case */
> +static inline void debug_writel(unsigned long val)
> +{
> }
#define l2x0_set_debug NULL
> +#endif
> @@ -329,6 +330,7 @@ void __init l2x0_init(void __iomem *base, __u32 aux_val,
> __u32 aux_mask)
> outer_cache.flush_all = l2x0_flush_all;
> outer_cache.inv_all = l2x0_inv_all;
> outer_cache.disable = l2x0_disable;
> + outer_cache.set_debug = NULL;
outer_cache.set_debug = l2x0_set_debug;
may result in more efficient code as we're avoiding having to test the
value of outer_cache.set_debug each time we want to call it and branch
appropriately.
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