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authorHeiko Carstens <heiko.carstens@de.ibm.com>2017-03-20 14:29:50 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-05-09 09:50:24 +0200
commitbce133ab7d4c4799949478fc7897cc335f3042e9 (patch)
tree079ffc1fa8aca04e60206c9e18999e30e5c63b00
parenta801ff4d8e4e84f8922694ece01193b17fe053bd (diff)
s390/facilites: use stfle_fac_list array size for MAX_FACILITY_BIT
commit 6f5165e864d240d15675cc2fb5a369d57e1f60d0 upstream. Use the actual size of the facility list array within the lowcore structure for the MAX_FACILITY_BIT define instead of a comment which states what this is good for. This makes it a bit harder to break things. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--arch/s390/include/asm/facility.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/facility.h b/arch/s390/include/asm/facility.h
index 7a8a1457dbb8..5811e7849a2e 100644
--- a/arch/s390/include/asm/facility.h
+++ b/arch/s390/include/asm/facility.h
@@ -15,7 +15,7 @@
#include <linux/preempt.h>
#include <asm/lowcore.h>
-#define MAX_FACILITY_BIT (256*8) /* stfle_fac_list has 256 bytes */
+#define MAX_FACILITY_BIT (sizeof(((struct lowcore *)0)->stfle_fac_list) * 8)
static inline void __set_facility(unsigned long nr, void *facilities)
{