| /* |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file "COPYING" in the main directory of this archive |
| * for more details. |
| * |
| * Copyright (C) 2004 by Ralf Baechle |
| * |
| * Dummy ISA DMA functions for systems that don't have ISA but share drivers |
| * with ISA such as legacy free PCI. |
| */ |
| #include <linux/errno.h> |
| #include <linux/module.h> |
| #include <linux/spinlock.h> |
| |
| DEFINE_SPINLOCK(dma_spin_lock); |
| |
| int request_dma(unsigned int dmanr, const char * device_id) |
| { |
| return -EINVAL; |
| } |
| |
| void free_dma(unsigned int dmanr) |
| { |
| } |
| |
| EXPORT_SYMBOL(dma_spin_lock); |
| EXPORT_SYMBOL(request_dma); |
| EXPORT_SYMBOL(free_dma); |