static int __init parse_bootparam()

in kernel/setup.c [149:178]

• 22 lines of code
• 7 McCabe index (conditional complexity)

static int __init parse_bootparam(const bp_tag_t* tag)
{
	extern tagtable_t __tagtable_begin, __tagtable_end;
	tagtable_t *t;

	/* Boot parameters must start with a BP_TAG_FIRST tag. */

	if (tag->id != BP_TAG_FIRST) {
		pr_warn("Invalid boot parameters!\n");
		return 0;
	}

	tag = (bp_tag_t*)((unsigned long)tag + sizeof(bp_tag_t) + tag->size);

	/* Parse all tags. */

	while (tag != NULL && tag->id != BP_TAG_LAST) {
		for (t = &__tagtable_begin; t < &__tagtable_end; t++) {
			if (tag->id == t->tag) {
				t->parse(tag);
				break;
			}
		}
		if (t == &__tagtable_end)
			pr_warn("Ignoring tag 0x%08x\n", tag->id);
		tag = (bp_tag_t*)((unsigned long)(tag + 1) + tag->size);
	}

	return 0;
}