From 4483b159168d3db41458925512523e44d0d49cd4 Mon Sep 17 00:00:00 2001
From: Ralf Baechle <ralf@linux-mips.org>
Date: Thu, 5 Aug 2010 13:25:59 +0100
Subject: [PATCH] MIPS: Provide more elevant interface cu2_notifier for CP2
extensions.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: https://patchwork.linux-mips.org/patch/1504/
---
arch/mips/cavium-octeon/cpu.c | 6 +-----
arch/mips/include/asm/cop2.h | 12 ++++++++++++
arch/mips/kernel/traps.c | 7 +------
3 files changed, 14 insertions(+), 11 deletions(-)
diff --git a/arch/mips/cavium-octeon/cpu.c b/arch/mips/cavium-octeon/cpu.c
index b6df5387e855..c664c8cc2b42 100644
--- a/arch/mips/cavium-octeon/cpu.c
+++ b/arch/mips/cavium-octeon/cpu.c
@@ -41,12 +41,8 @@ static int cnmips_cu2_call(struct notifier_block *nfb, unsigned long action,
return NOTIFY_OK; /* Let default notifier send signals */
}
-static struct notifier_block cnmips_cu2_notifier = {
- .notifier_call = cnmips_cu2_call,
-};
-
static int cnmips_cu2_setup(void)
{
- return register_cu2_notifier(&cnmips_cu2_notifier);
+ return cu2_notifier(cnmips_cu2_call, 0);
}
early_initcall(cnmips_cu2_setup);
diff --git a/arch/mips/include/asm/cop2.h b/arch/mips/include/asm/cop2.h
index 6b04c98b7fad..2cb2f0c2c4f8 100644
--- a/arch/mips/include/asm/cop2.h
+++ b/arch/mips/include/asm/cop2.h
@@ -9,6 +9,8 @@
#ifndef __ASM_COP2_H
#define __ASM_COP2_H
+#include <linux/notifier.h>
+
enum cu2_ops {
CU2_EXCEPTION,
CU2_LWC2_OP,
@@ -20,4 +22,14 @@ enum cu2_ops {
extern int register_cu2_notifier(struct notifier_block *nb);
extern int cu2_notifier_call_chain(unsigned long val, void *v);
+#define cu2_notifier(fn, pri) \
+({ \
+ static struct notifier_block fn##_nb __cpuinitdata = { \
+ .notifier_call = fn, \
+ .priority = pri \
+ }; \
+ \
+ register_cu2_notifier(&fn##_nb); \
+})
+
#endif /* __ASM_COP2_H */
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 852780868fb4..1515b673179d 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -907,11 +907,6 @@ static int default_cu2_call(struct notifier_block *nfb, unsigned long action,
return NOTIFY_OK;
}
-static struct notifier_block default_cu2_notifier = {
- .notifier_call = default_cu2_call,
- .priority = 0x80000000, /* Run last */
-};
-
asmlinkage void do_cpu(struct pt_regs *regs)
{
unsigned int __user *epc;
@@ -1734,5 +1729,5 @@ void __init trap_init(void)
sort_extable(__start___dbe_table, __stop___dbe_table);
- register_cu2_notifier(&default_cu2_notifier);
+ cu2_notifier(default_cu2_call, 0x80000000); /* Run last */
}
--
2.34.1