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ARM: make arch_ret_to_user macro optional

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Only 3 platforms need arch_ret_to_user macro, so add ARCH_HAS_RET_TO_USER
kconfig option and make iop13xx, iop32x and iop33x select it.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
This commit is contained in:
Rob Herring 2012-02-07 09:28:22 -06:00
parent d65b4e98d7
commit 13a5045d4e
2 changed files with 13 additions and 1 deletions
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6
arch/arm/Kconfig
View File

@ -186,6 +186,9 @@ config GENERIC_ISA_DMA
config FIQ
bool
config NEED_RET_TO_USER
bool
config ARCH_MTD_XIP
bool
@ -479,6 +482,7 @@ config ARCH_IOP13XX
select ARCH_SUPPORTS_MSI
select VMSPLIT_1G
select NEED_MACH_MEMORY_H
select NEED_RET_TO_USER
help
Support for Intel's IOP13XX (XScale) family of processors.
@ -486,6 +490,7 @@ config ARCH_IOP32X
bool "IOP32x-based"
depends on MMU
select CPU_XSCALE
select NEED_RET_TO_USER
select PLAT_IOP
select PCI
select ARCH_REQUIRE_GPIOLIB
@ -497,6 +502,7 @@ config ARCH_IOP33X
bool "IOP33x-based"
depends on MMU
select CPU_XSCALE
select NEED_RET_TO_USER
select PLAT_IOP
select PCI
select ARCH_REQUIRE_GPIOLIB

8
arch/arm/kernel/entry-common.S
View File

@ -10,9 +10,15 @@
#include <asm/unistd.h>
#include <asm/ftrace.h>
#include <mach/entry-macro.S>
#include <asm/unwind.h>
#ifdef CONFIG_NEED_RET_TO_USER
#include <mach/entry-macro.S>
#else
.macro arch_ret_to_user, tmp1, tmp2
.endm
#endif
#include "entry-header.S"