On 9/7/05, Miloslav Trmac <[email protected]> wrote:
> +static int __init map_bios(void)
> +{
> + static const unsigned char __initdata signature[]
> + = { 0x42, 0x21, 0x55, 0x30 };
> +
> + void __iomem *base;
> + size_t offset;
> + uint32_t entry_point;
> +
> + base = ioremap(0xF0000, 0x10000); /* Can't fail */
How come? ioremap can return NULL if, for example, we run out of memory.
> + for (offset = 0; offset < 0x10000; offset += 0x10) {
> + if (check_signature(base + offset, signature,
> + sizeof(signature)) != 0)
> + goto found;
> + }
Pekka
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