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authorNicolas Pitre <nico@cam.org>2005-10-12 19:51:24 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-10-12 19:51:24 +0100
commit60ac133aac9e07b94f2cb6bf571bf8aef69248c3 (patch)
treef75a44630c4cd0b63c025eee1ccc615a6ec7157e /arch
parentda64c6ee6bb71bfb3f09d9bb89ce1aa4b1ee7e89 (diff)
downloadlinux-2.6.34-ux500-60ac133aac9e07b94f2cb6bf571bf8aef69248c3.tar.gz
[ARM] 2974/1: fix ARM710 swi bug workaround
Patch from Nicolas Pitre Either no one is using an ARM710 with recent kernels, or all ARM710s still in use are not afflicted by this swi bug. Nevertheless, the code to work around the ARM710 swi bug is itself currently buggy since it uses r8 as a pointer to S_PC while in fact it holds the spsr content these days. Fix that, and simplify the code as well. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/kernel/entry-common.S7
1 files changed, 1 insertions, 6 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 81d450ac3fa..066597f4345 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -106,15 +106,10 @@ ENTRY(ret_from_fork)
.endm
.Larm700bug:
- ldr r0, [sp, #S_PSR] @ Get calling cpsr
- sub lr, lr, #4
- str lr, [r8]
- msr spsr_cxsf, r0
ldmia sp, {r0 - lr}^ @ Get calling r0 - lr
mov r0, r0
- ldr lr, [sp, #S_PC] @ Get PC
add sp, sp, #S_FRAME_SIZE
- movs pc, lr
+ subs pc, lr, #4
#else
.macro arm710_bug_check, instr, temp
.endm