powerpc: use time64_t in read_persistent_clock

Looking through the remaining users of the deprecated mktime()
function, I found the powerpc rtc handlers, which use it in
place of rtc_tm_to_time64().

To clean this up, I'm changing over the read_persistent_clock()
function to the read_persistent_clock64() variant, and change
all the platform specific handlers along with it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

2 files changed, 12 insertions, 21 deletions

diff --git a/arch/powerpc/platforms/powermac/pmac.h b/arch/powerpc/platforms/powermac/pmac.h
index 6f15b8804e9b..16a52afdb76e 100644
--- a/arch/powerpc/platforms/powermac/pmac.h
+++ b/arch/powerpc/platforms/powermac/pmac.h
@@ -15,7 +15,7 @@ struct rtc_time;
 extern int pmac_newworld;
 
 extern long pmac_time_init(void);
-extern unsigned long pmac_get_boot_time(void);
+extern time64_t pmac_get_boot_time(void);
 extern void pmac_get_rtc_time(struct rtc_time *);
 extern int pmac_set_rtc_time(struct rtc_time *);
 extern void pmac_read_rtc_time(void);
diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c
index 274af6fa388e..d5d1c452038e 100644
--- a/arch/powerpc/platforms/powermac/time.c
+++ b/arch/powerpc/platforms/powermac/time.c
@@ -84,15 +84,6 @@ long __init pmac_time_init(void)
 	return delta;
 }
 
-#if defined(CONFIG_ADB_CUDA) || defined(CONFIG_ADB_PMU)
-static void to_rtc_time(unsigned long now, struct rtc_time *tm)
-{
-	to_tm(now, tm);
-	tm->tm_year -= 1900;
-	tm->tm_mon -= 1;
-}
-#endif
-
 #if defined(CONFIG_ADB_CUDA) || defined(CONFIG_ADB_PMU) || \
     defined(CONFIG_PMAC_SMU)
 static unsigned long from_rtc_time(struct rtc_time *tm)
@@ -103,10 +94,10 @@ static unsigned long from_rtc_time(struct rtc_time *tm)
 #endif
 
 #ifdef CONFIG_ADB_CUDA
-static unsigned long cuda_get_time(void)
+static time64_t cuda_get_time(void)
 {
 	struct adb_request req;
-	unsigned int now;
+	time64_t now;
 
 	if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
 		return 0;
@@ -117,10 +108,10 @@ static unsigned long cuda_get_time(void)
 		       req.reply_len);
 	now = (req.reply[3] << 24) + (req.reply[4] << 16)
 		+ (req.reply[5] << 8) + req.reply[6];
-	return ((unsigned long)now) - RTC_OFFSET;
+	return now - RTC_OFFSET;
 }
 
-#define cuda_get_rtc_time(tm)	to_rtc_time(cuda_get_time(), (tm))
+#define cuda_get_rtc_time(tm)	rtc_time64_to_tm(cuda_get_time(), (tm))
 
 static int cuda_set_rtc_time(struct rtc_time *tm)
 {
@@ -147,10 +138,10 @@ static int cuda_set_rtc_time(struct rtc_time *tm)
 #endif
 
 #ifdef CONFIG_ADB_PMU
-static unsigned long pmu_get_time(void)
+static time64_t pmu_get_time(void)
 {
 	struct adb_request req;
-	unsigned int now;
+	time64_t now;
 
 	if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
 		return 0;
@@ -160,10 +151,10 @@ static unsigned long pmu_get_time(void)
 		       req.reply_len);
 	now = (req.reply[0] << 24) + (req.reply[1] << 16)
 		+ (req.reply[2] << 8) + req.reply[3];
-	return ((unsigned long)now) - RTC_OFFSET;
+	return now - RTC_OFFSET;
 }
 
-#define pmu_get_rtc_time(tm)	to_rtc_time(pmu_get_time(), (tm))
+#define pmu_get_rtc_time(tm)	rtc_time64_to_tm(pmu_get_time(), (tm))
 
 static int pmu_set_rtc_time(struct rtc_time *tm)
 {
@@ -188,13 +179,13 @@ static int pmu_set_rtc_time(struct rtc_time *tm)
 #endif
 
 #ifdef CONFIG_PMAC_SMU
-static unsigned long smu_get_time(void)
+static time64_t smu_get_time(void)
 {
 	struct rtc_time tm;
 
 	if (smu_get_rtc_time(&tm, 1))
 		return 0;
-	return from_rtc_time(&tm);
+	return rtc_tm_to_time64(&tm);
 }
 
 #else
@@ -204,7 +195,7 @@ static unsigned long smu_get_time(void)
 #endif
 
 /* Can't be __init, it's called when suspending and resuming */
-unsigned long pmac_get_boot_time(void)
+time64_t pmac_get_boot_time(void)
 {
 	/* Get the time from the RTC, used only at boot time */
 	switch (sys_ctrler) {