diff --git a/include/linux/restart_block.h b/include/linux/restart_block.h
index bcfdb918cd810ec5e7b006764e3be936edea34b7..5d83d0c1d06cc22507d8b8e03d75e0bf8de32fd8 100644
--- a/include/linux/restart_block.h
+++ b/include/linux/restart_block.h
@@ -7,6 +7,7 @@
 
 #include <linux/compiler.h>
 #include <linux/types.h>
+#include <linux/time64.h>
 
 struct timespec;
 struct compat_timespec;
@@ -15,9 +16,7 @@ struct pollfd;
 enum timespec_type {
 	TT_NONE		= 0,
 	TT_NATIVE	= 1,
-#ifdef CONFIG_COMPAT
 	TT_COMPAT	= 2,
-#endif
 };
 
 /*
@@ -40,10 +39,8 @@ struct restart_block {
 			clockid_t clockid;
 			enum timespec_type type;
 			union {
-				struct timespec __user *rmtp;
-#ifdef CONFIG_COMPAT
+				struct __kernel_timespec __user *rmtp;
 				struct compat_timespec __user *compat_rmtp;
-#endif
 			};
 			u64 expires;
 		} nanosleep;
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 40bb40d1741b0e01c4af5f7f2ba91ad0332b835d..c9a2a26018525be2a53aaa1b19b32b19353f043a 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -536,7 +536,8 @@ asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
 				    size_t len);
 
 /* kernel/hrtimer.c */
-asmlinkage long sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp);
+asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp,
+			      struct __kernel_timespec __user *rmtp);
 
 /* kernel/itimer.c */
 asmlinkage long sys_getitimer(int which, struct itimerval __user *value);
@@ -573,8 +574,8 @@ asmlinkage long sys_clock_gettime(clockid_t which_clock,
 asmlinkage long sys_clock_getres(clockid_t which_clock,
 				struct __kernel_timespec __user *tp);
 asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags,
-				const struct timespec __user *rqtp,
-				struct timespec __user *rmtp);
+				const struct __kernel_timespec __user *rqtp,
+				struct __kernel_timespec __user *rmtp);
 
 /* kernel/printk.c */
 asmlinkage long sys_syslog(int type, char __user *buf, int len);
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index f183257ff0c6d4426f9470cc148c9d27dddbe5a5..d7051b3993b544b91c811183511fa04710122035 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -1747,8 +1747,10 @@ long hrtimer_nanosleep(const struct timespec64 *rqtp,
 	return ret;
 }
 
-SYSCALL_DEFINE2(nanosleep, struct timespec __user *, rqtp,
-		struct timespec __user *, rmtp)
+#if !defined(CONFIG_64BIT_TIME) || defined(CONFIG_64BIT)
+
+SYSCALL_DEFINE2(nanosleep, struct __kernel_timespec __user *, rqtp,
+		struct __kernel_timespec __user *, rmtp)
 {
 	struct timespec64 tu;
 
@@ -1763,6 +1765,8 @@ SYSCALL_DEFINE2(nanosleep, struct timespec __user *, rqtp,
 	return hrtimer_nanosleep(&tu, HRTIMER_MODE_REL, CLOCK_MONOTONIC);
 }
 
+#endif
+
 #ifdef CONFIG_COMPAT_32BIT_TIME
 
 COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp,
diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c
index 4e76021cea7f3c543283f0e9d58f4ca54808ef9c..474e4ca2e28f33fa470073ad1e533dfe620bb352 100644
--- a/kernel/time/posix-stubs.c
+++ b/kernel/time/posix-stubs.c
@@ -126,8 +126,8 @@ SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock, struct __kernel_time
 }
 
 SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
-		const struct timespec __user *, rqtp,
-		struct timespec __user *, rmtp)
+		const struct __kernel_timespec __user *, rqtp,
+		struct __kernel_timespec __user *, rmtp)
 {
 	struct timespec64 t;
 
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 93b2c38ad0f3511c840fccb2ce992189bea6b8a0..c21f4c4f86607fa5a1bdf1799f550ddd86027511 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1212,8 +1212,8 @@ static int common_nsleep(const clockid_t which_clock, int flags,
 }
 
 SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
-		const struct timespec __user *, rqtp,
-		struct timespec __user *, rmtp)
+		const struct __kernel_timespec __user *, rqtp,
+		struct __kernel_timespec __user *, rmtp)
 {
 	const struct k_clock *kc = clockid_to_kclock(which_clock);
 	struct timespec64 t;