diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 7fd08755a1f9..854a6581d2f9 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -26,10 +26,6 @@ config GENERIC_BUG
 config GENERIC_BUG_RELATIVE_POINTERS
 	def_bool y
 
-config GENERIC_CSUM
-	bool
-	default y if KASAN
-
 config GENERIC_LOCKBREAK
 	def_bool y if PREEMPTION
 
diff --git a/arch/s390/include/asm/checksum.h b/arch/s390/include/asm/checksum.h
index d977a3a2f619..1b6b992cf18e 100644
--- a/arch/s390/include/asm/checksum.h
+++ b/arch/s390/include/asm/checksum.h
@@ -12,12 +12,7 @@
 #ifndef _S390_CHECKSUM_H
 #define _S390_CHECKSUM_H
 
-#ifdef CONFIG_GENERIC_CSUM
-
-#include <asm-generic/checksum.h>
-
-#else /* CONFIG_GENERIC_CSUM */
-
+#include <linux/kasan-checks.h>
 #include <linux/uaccess.h>
 #include <linux/in6.h>
 
@@ -40,6 +35,7 @@ static inline __wsum csum_partial(const void *buff, int len, __wsum sum)
 		.odd = (unsigned long) len,
 	};
 
+	kasan_check_read(buff, len);
 	asm volatile(
 		"0:	cksm	%[sum],%[rp]\n"
 		"	jo	0b\n"
@@ -135,5 +131,4 @@ static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
 	return csum_fold((__force __wsum)(sum >> 32));
 }
 
-#endif /* CONFIG_GENERIC_CSUM */
 #endif /* _S390_CHECKSUM_H */