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Diffstat (limited to 'arch/s390/include/asm/facility.h')
-rw-r--r--arch/s390/include/asm/facility.h17
1 files changed, 11 insertions, 6 deletions
diff --git a/arch/s390/include/asm/facility.h b/arch/s390/include/asm/facility.h
index 2ee66a65f2d4..0aa6a7ed95a3 100644
--- a/arch/s390/include/asm/facility.h
+++ b/arch/s390/include/asm/facility.h
@@ -13,6 +13,16 @@
#define MAX_FACILITY_BIT (256*8) /* stfle_fac_list has 256 bytes */
+static inline int __test_facility(unsigned long nr, void *facilities)
+{
+ unsigned char *ptr;
+
+ if (nr >= MAX_FACILITY_BIT)
+ return 0;
+ ptr = (unsigned char *) facilities + (nr >> 3);
+ return (*ptr & (0x80 >> (nr & 7))) != 0;
+}
+
/*
* The test_facility function uses the bit odering where the MSB is bit 0.
* That makes it easier to query facility bits with the bit number as
@@ -20,12 +30,7 @@
*/
static inline int test_facility(unsigned long nr)
{
- unsigned char *ptr;
-
- if (nr >= MAX_FACILITY_BIT)
- return 0;
- ptr = (unsigned char *) &S390_lowcore.stfle_fac_list + (nr >> 3);
- return (*ptr & (0x80 >> (nr & 7))) != 0;
+ return __test_facility(nr, &S390_lowcore.stfle_fac_list);
}
/**