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m68knommu: user generic iomap to support ioread*/iowrite*

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There is no reason we cannot use the generic iomap support to give us
the ioread* and iowrite* family of IO access functions. The m68k arch with
MMU enabled does, so this makes us consistent for all m68k now.

Some potentially valid drivers will fail to compile without these,
for example:

drivers/i2c/busses/i2c-ocores.c:81:2: error: implicit declaration of
function ‘iowrite8’ [-Werror=implicit-function-declaration]
drivers/i2c/busses/i2c-ocores.c:86:2: error: implicit declaration of
function ‘iowrite16’ [-Werror=implicit-function-declaration]
drivers/i2c/busses/i2c-ocores.c:91:2: error: implicit declaration of
function ‘iowrite32’ [-Werror=implicit-function-declaration]
drivers/i2c/busses/i2c-ocores.c:96:2: error: implicit declaration of
function ‘ioread8’ [-Werror=implicit-function-declaration]
drivers/i2c/busses/i2c-ocores.c:101:2: error: implicit declaration of
function ‘ioread16’ [-Werror=implicit-function-declaration]
drivers/i2c/busses/i2c-ocores.c:106:2: error: implicit declaration of
function ‘ioread32’ [-Werror=implicit-function-declaration]

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This commit is contained in:
Greg Ungerer 2013-08-02 17:24:38 +10:00
parent 42cb38bcb7
commit f79b859212
2 changed files with 2 additions and 1 deletions
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2
arch/m68k/Kconfig
View File

@ -11,6 +11,7 @@ config M68K
select VIRT_TO_BUS
select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
select GENERIC_CPU_DEVICES
select GENERIC_IOMAP
select GENERIC_STRNCPY_FROM_USER if MMU
select GENERIC_STRNLEN_USER if MMU
select FPU if MMU
@ -72,7 +73,6 @@ source "kernel/Kconfig.freezer"
config MMU
bool "MMU-based Paged Memory Management Support"
default y
select GENERIC_IOMAP
help
Select if you want MMU-based virtualised addressing space
support by paged memory management. If unsure, say 'Y'.

1
arch/m68k/include/asm/io_no.h
View File

@ -4,6 +4,7 @@
#ifdef __KERNEL__
#include <asm/virtconvert.h>
#include <asm-generic/iomap.h>
/*
* These are for ISA/PCI shared memory _only_ and should never be used