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8c936508 RB |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (C) 2004 by Ralf Baechle | |
7 | * | |
8 | * Dummy ISA DMA functions for systems that don't have ISA but share drivers | |
9 | * with ISA such as legacy free PCI. | |
10 | */ | |
11 | #include <linux/errno.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/spinlock.h> | |
14 | ||
15 | DEFINE_SPINLOCK(dma_spin_lock); | |
16 | ||
17 | int request_dma(unsigned int dmanr, const char * device_id) | |
18 | { | |
19 | return -EINVAL; | |
20 | } | |
21 | ||
22 | void free_dma(unsigned int dmanr) | |
23 | { | |
24 | } | |
25 | ||
26 | EXPORT_SYMBOL(dma_spin_lock); | |
27 | EXPORT_SYMBOL(request_dma); | |
28 | EXPORT_SYMBOL(free_dma); |