int ia64_esi_call_phys()

in kernel/esi.c [140:185]

• 41 lines of code
• 5 McCabe index (conditional complexity)

int ia64_esi_call_phys (efi_guid_t guid, struct ia64_sal_retval *isrvp,
			u64 func, u64 arg1, u64 arg2, u64 arg3, u64 arg4,
			u64 arg5, u64 arg6, u64 arg7)
{
	struct ia64_fpreg fr[6];
	unsigned long flags;
	u64 esi_params[8];
	char *p;
	int i;

	if (!esi_systab)
		return -1;

	p = (char *) (esi_systab + 1);
	for (i = 0; i < esi_systab->entry_count; i++) {
		if (*p == ESI_DESC_ENTRY_POINT) {
			ia64_esi_desc_entry_point_t *esi = (void *)p;
			if (!efi_guidcmp(guid, esi->guid)) {
				ia64_sal_handler esi_proc;
				struct pdesc pdesc;

				pdesc.addr = (void *)esi->esi_proc;
				pdesc.gp = (void *)esi->gp;

				esi_proc = (ia64_sal_handler) &pdesc;

				esi_params[0] = func;
				esi_params[1] = arg1;
				esi_params[2] = arg2;
				esi_params[3] = arg3;
				esi_params[4] = arg4;
				esi_params[5] = arg5;
				esi_params[6] = arg6;
				esi_params[7] = arg7;
				ia64_save_scratch_fpregs(fr);
				spin_lock_irqsave(&sal_lock, flags);
				*isrvp = esi_call_phys(esi_proc, esi_params);
				spin_unlock_irqrestore(&sal_lock, flags);
				ia64_load_scratch_fpregs(fr);
				return 0;
			}
		}
		p += ESI_DESC_SIZE(*p);
	}
	return -1;
}