[PATCH] s390: add <linux/minmax.h> to <asm/facility.h>

[Randy Dunlap]

S390's <asm/facility.h> uses the min_t() macro, so it should
include <linux/minmax.h> to avoid build errors.

In file included from arch/s390/pci/pci_insn.c:12:
arch/s390/include/asm/facility.h: In function '__stfle':
arch/s390/include/asm/facility.h:98:22: error: implicit declaration of
function 'min_t' [-Werror=implicit-function-declaration]
   98 |                 nr = min_t(unsigned long, (nr + 1) * 8, size * 8);
arch/s390/include/asm/facility.h:98:28: error: expected expression
before 'unsigned'
   98 |                 nr = min_t(unsigned long, (nr + 1) * 8, size * 8);


Fixes: 4f18d869ffd0 ("s390: fix stfle zero padding")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
Cc: Naresh Kamboju <naresh.kamboju@xxxxxxxxxx>
Cc: Heiko Carstens <hca@xxxxxxxxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Cc: linux-s390@xxxxxxxxxxxxxxx
---
 arch/s390/include/asm/facility.h |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20211028.orig/arch/s390/include/asm/facility.h
+++ linux-next-20211028/arch/s390/include/asm/facility.h
@@ -9,6 +9,7 @@
 #define __ASM_FACILITY_H
 
 #include <asm/facility-defs.h>
+#include <linux/minmax.h>
 #include <linux/string.h>
 #include <linux/preempt.h>
 #include <asm/lowcore.h>