ARM: entry: prefetch abort: tail-call the main prefetch abort handler
Tail-call the main C prefetch abort handler code from the per-CPU
helper code. Also note that the helper function becomes ABI
compliant in terms of the registers preserved.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index b17e579..af2fba7 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -45,7 +45,7 @@
.endm
.macro pabt_helper
- @ PABORT handler takes fault address in r4
+ @ PABORT handler takes pt_regs in r2, fault address in r4 and psr in r5
#ifdef MULTI_PABORT
ldr ip, .LCprocfns
mov lr, pc
@@ -306,9 +306,8 @@
.align 5
__pabt_svc:
svc_entry
- pabt_helper
mov r2, sp @ regs
- bl do_PrefetchAbort @ call abort handler
+ pabt_helper
@
@ IRQs off again before pulling preserved data off the stack
@@ -653,9 +652,8 @@
.align 5
__pabt_usr:
usr_entry
- pabt_helper
mov r2, sp @ regs
- bl do_PrefetchAbort @ call abort handler
+ pabt_helper
UNWIND(.fnend )
/* fall through */
/*