On Sat, Aug 15, 2009 at 07:17:11PM +0100, Russell King - ARM Linux wrote:
> +#ifndef CONFIG_SPARSEMEM
> +int pfn_valid(unsigned long pfn)
> +{
> + struct meminfo *mi = &meminfo;
> + unsigned int mid, left = 0, right = mi->nr_banks;
> +
> + while ((mid = (right - left) / 2) > 0) {
> + struct membank *bank = &mi->bank[mid];
> +
> + if (pfn < bank_pfn_start(bank))
> + right = mid;
> + else if (pfn >= bank_pfn_end(bank))
> + left = mid + 1;
> + else
> + return 1;
> + }
> + return 0;
> +}
> +EXPORT_SYMBOL(pfn_valid);
> +#endif
The above function will ignore the first bank. I don't think that was
intended.
Rabin
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