4.9-stable review patch. If anyone has any objections, please let me know.
------------------ From: Heiko Carstens <[email protected]> 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 <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/s390/include/asm/facility.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- 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) {
