mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-29 22:14:41 +08:00
8c93650890
drivers with ISA such as legacy free PCI. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
29 lines
655 B
C
29 lines
655 B
C
/*
|
|
* 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);
|