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[MIPS] Remove duplicate ISA DMA code for 0 DMA channel case. 

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2006-11-30 01:14:51 +00:00
parent 0b7883f498
commit aa414dff4f
4 changed files with 8 additions and 34 deletions
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11
arch/mips/Kconfig
View File

@ -266,8 +266,8 @@ config MIPS_MALTA
select BOOT_ELF32
select HAVE_STD_PC_SERIAL_PORT
select DMA_NONCOHERENT
select IRQ_CPU
select GENERIC_ISA_DMA
select IRQ_CPU
select HW_HAS_PCI
select I8259
select MIPS_BOARDS_GEN
@ -534,7 +534,7 @@ config SGI_IP22
select HW_HAS_EISA
select IP22_CPU_SCACHE
select IRQ_CPU
select NO_ISA if ISA
select GENERIC_ISA_DMA_SUPPORT_BROKEN
select SWAP_IO_SPACE
select SYS_HAS_CPU_R4X00
select SYS_HAS_CPU_R5000
@ -881,6 +881,9 @@ config MIPS_NILE4
config MIPS_DISABLE_OBSOLETE_IDE
bool
config GENERIC_ISA_DMA_SUPPORT_BROKEN
bool
#
# Endianess selection. Suffiently obscure so many users don't know what to
# answer,so we try hard to limit the available choices. Also the use of a
@ -1852,13 +1855,11 @@ source "drivers/pci/Kconfig"
config ISA
bool
config NO_ISA
bool
config EISA
bool "EISA support"
depends on HW_HAS_EISA
select ISA
select GENERIC_ISA_DMA
---help---
The Extended Industry Standard Architecture (EISA) bus was
developed as an open alternative to the IBM MicroChannel bus.

1
arch/mips/kernel/Makefile
View File

@ -45,7 +45,6 @@ obj-$(CONFIG_MIPS_APSP_KSPD) += kspd.o
obj-$(CONFIG_MIPS_VPE_LOADER) += vpe.o
obj-$(CONFIG_MIPS_VPE_APSP_API) += rtlx.o
obj-$(CONFIG_NO_ISA) += dma-no-isa.o
obj-$(CONFIG_I8259) += i8259.o
obj-$(CONFIG_IRQ_CPU) += irq_cpu.o
obj-$(CONFIG_IRQ_CPU_RM7K) += irq-rm7000.o

28
arch/mips/kernel/dma-no-isa.c
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@ -1,28 +0,0 @@
/*
* 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);

2
include/asm-mips/dma.h
View File

@ -74,7 +74,9 @@
*
*/
#ifndef GENERIC_ISA_DMA_SUPPORT_BROKEN
#define MAX_DMA_CHANNELS 8
#endif
/*
* The maximum address in KSEG0 that we can perform a DMA transfer to on this