linux-kernel - [PATCH] blackfin: time: Use read_persistent_clock64() instead of read_persistent

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Date:   Wed, 28 Feb 2018 13:57:22 +0800
From:   Baolin Wang <baolin.wang@...aro.org>
To:     john.stultz@...aro.org, nicstange@...il.com, arnd@...db.de
Cc:     adi-buildroot-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, broonie@...nel.org,
        baolin.wang@...aro.org
Subject: [PATCH] blackfin: time: Use read_persistent_clock64() instead of read_persistent_clock()

Since struct timespec is not y2038 safe on 32bit machines, this patch
converts read_persistent_clock() to read_persistent_clock64() using
struct timespec64.

Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
---
 arch/blackfin/kernel/time-ts.c |    6 ++++--
 arch/blackfin/kernel/time.c    |    6 ++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/arch/blackfin/kernel/time-ts.c b/arch/blackfin/kernel/time-ts.c
index 0135055..95a80ab 100644
--- a/arch/blackfin/kernel/time-ts.c
+++ b/arch/blackfin/kernel/time-ts.c
@@ -357,9 +357,11 @@ void bfin_coretmr_clockevent_init(void)
 #endif /* CONFIG_TICKSOURCE_CORETMR */
 
 
-void read_persistent_clock(struct timespec *ts)
+void read_persistent_clock64(struct timespec64 *ts)
 {
-	time_t secs_since_1970 = (365 * 37 + 9) * 24 * 60 * 60;	/* 1 Jan 2007 */
+	/* 1 Jan 2007 */
+	time64_t secs_since_1970 = (365 * 37 + 9) * 24 * 60 * 60;
+
 	ts->tv_sec = secs_since_1970;
 	ts->tv_nsec = 0;
 }
diff --git a/arch/blackfin/kernel/time.c b/arch/blackfin/kernel/time.c
index 3126b92..48a6684 100644
--- a/arch/blackfin/kernel/time.c
+++ b/arch/blackfin/kernel/time.c
@@ -132,9 +132,11 @@ irqreturn_t timer_interrupt(int irq, void *dummy)
 	return IRQ_HANDLED;
 }
 
-void read_persistent_clock(struct timespec *ts)
+void read_persistent_clock64(struct timespec64 *ts)
 {
-	time_t secs_since_1970 = (365 * 37 + 9) * 24 * 60 * 60;	/* 1 Jan 2007 */
+	/* 1 Jan 2007 */
+	time64_t secs_since_1970 = (365 * 37 + 9) * 24 * 60 * 60;
+
 	ts->tv_sec = secs_since_1970;
 	ts->tv_nsec = 0;
 }
-- 
1.7.9.5