[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>

diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 290e504..d682ff1 100644 (file)
--- 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 15aba30..92098df 100644 (file)
--- 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);