linux-kernel - [PATCH 1/3] y2038: remove ktime to/from timespec/timeval conversion

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Date:   Fri, 10 Jan 2020 16:42:30 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Arnd Bergmann <arnd@...db.de>, y2038@...ts.linaro.org,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Deepa Dinamani <deepa.kernel@...il.com>
Subject: [PATCH 1/3] y2038: remove ktime to/from timespec/timeval conversion

A couple of helpers are now obsolete and can be removed, so drivers can
no longer start using them and instead use y2038-safe interfaces.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 include/linux/ktime.h | 37 -------------------------------------
 1 file changed, 37 deletions(-)

diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index b2bb44f87f5a..d1fb05135665 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -66,33 +66,15 @@ static inline ktime_t ktime_set(const s64 secs, const unsigned long nsecs)
  */
 #define ktime_sub_ns(kt, nsval)		((kt) - (nsval))
 
-/* convert a timespec to ktime_t format: */
-static inline ktime_t timespec_to_ktime(struct timespec ts)
-{
-	return ktime_set(ts.tv_sec, ts.tv_nsec);
-}
-
 /* convert a timespec64 to ktime_t format: */
 static inline ktime_t timespec64_to_ktime(struct timespec64 ts)
 {
 	return ktime_set(ts.tv_sec, ts.tv_nsec);
 }
 
-/* convert a timeval to ktime_t format: */
-static inline ktime_t timeval_to_ktime(struct timeval tv)
-{
-	return ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC);
-}
-
-/* Map the ktime_t to timespec conversion to ns_to_timespec function */
-#define ktime_to_timespec(kt)		ns_to_timespec((kt))
-
 /* Map the ktime_t to timespec conversion to ns_to_timespec function */
 #define ktime_to_timespec64(kt)		ns_to_timespec64((kt))
 
-/* Map the ktime_t to timeval conversion to ns_to_timeval function */
-#define ktime_to_timeval(kt)		ns_to_timeval((kt))
-
 /* Convert ktime_t to nanoseconds */
 static inline s64 ktime_to_ns(const ktime_t kt)
 {
@@ -215,25 +197,6 @@ static inline ktime_t ktime_sub_ms(const ktime_t kt, const u64 msec)
 
 extern ktime_t ktime_add_safe(const ktime_t lhs, const ktime_t rhs);
 
-/**
- * ktime_to_timespec_cond - convert a ktime_t variable to timespec
- *			    format only if the variable contains data
- * @kt:		the ktime_t variable to convert
- * @ts:		the timespec variable to store the result in
- *
- * Return: %true if there was a successful conversion, %false if kt was 0.
- */
-static inline __must_check bool ktime_to_timespec_cond(const ktime_t kt,
-						       struct timespec *ts)
-{
-	if (kt) {
-		*ts = ktime_to_timespec(kt);
-		return true;
-	} else {
-		return false;
-	}
-}
-
 /**
  * ktime_to_timespec64_cond - convert a ktime_t variable to timespec64
  *			    format only if the variable contains data
-- 
2.20.0