From 7b758389a29cb7f456ec2d27b7a08cb3cc4e1f1c Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Thu, 17 Apr 2008 07:46:11 +0200
Subject: [PATCH] [S390] Export stfle.
Make stfle visible so other code can call this.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
---
arch/s390/kernel/setup.c | 11 +++++++++--
include/asm-s390/system.h | 2 ++
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 290e504061a..d682ff135a1 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -687,7 +687,7 @@ static __init unsigned int stfl(void)
return S390_lowcore.stfl_fac_list;
}
-static __init int stfle(unsigned long long *list, int doublewords)
+static int __init __stfle(unsigned long long *list, int doublewords)
{
typedef struct { unsigned long long _[doublewords]; } addrtype;
register unsigned long __nr asm("0") = doublewords - 1;
@@ -697,6 +697,13 @@ static __init int stfle(unsigned long long *list, int doublewords)
return __nr + 1;
}
+int __init stfle(unsigned long long *list, int doublewords)
+{
+ if (!(stfl() & (1UL << 24)))
+ return -EOPNOTSUPP;
+ return __stfle(list, doublewords);
+}
+
/*
* Setup hardware capabilities.
*/
@@ -741,7 +748,7 @@ static void __init setup_hwcaps(void)
* HWCAP_S390_DFP bit 6.
*/
if ((elf_hwcap & (1UL << 2)) &&
- stfle(&facility_list_extended, 1) > 0) {
+ __stfle(&facility_list_extended, 1) > 0) {
if (facility_list_extended & (1ULL << (64 - 43)))
elf_hwcap |= 1UL << 6;
}
diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h
index 15aba30601a..92098df4d6e 100644
--- a/include/asm-s390/system.h
+++ b/include/asm-s390/system.h
@@ -406,6 +406,8 @@ __set_psw_mask(unsigned long mask)
#define local_mcck_enable() __set_psw_mask(psw_kernel_bits)
#define local_mcck_disable() __set_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK)
+int stfle(unsigned long long *list, int doublewords);
+
#ifdef CONFIG_SMP
extern void smp_ctl_set_bit(int cr, int bit);
--
2.41.3