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Subject[PATCH 3/8] [media] solo6x10: use ktime_get_ts64() for time sync
Date
solo6x10 correctly deals with time stamps and will never
suffer from overflows, but it uses the deprecated 'struct timespec'
type and 'ktime_get_ts()' interface to read the monotonic clock.

This changes it to use ktime_get_ts64() instead, so we can
eventually remove ktime_get_ts().

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/media/pci/solo6x10/solo6x10-core.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/media/pci/solo6x10/solo6x10-core.c b/drivers/media/pci/solo6x10/solo6x10-core.c
index ca0873e47bea..19ffd2ed3cc7 100644
--- a/drivers/media/pci/solo6x10/solo6x10-core.c
+++ b/drivers/media/pci/solo6x10/solo6x10-core.c
@@ -47,18 +47,19 @@ MODULE_PARM_DESC(full_eeprom, "Allow access to full 128B EEPROM (dangerous)");

static void solo_set_time(struct solo_dev *solo_dev)
{
- struct timespec ts;
+ struct timespec64 ts;

- ktime_get_ts(&ts);
+ ktime_get_ts64(&ts);

- solo_reg_write(solo_dev, SOLO_TIMER_SEC, ts.tv_sec);
- solo_reg_write(solo_dev, SOLO_TIMER_USEC, ts.tv_nsec / NSEC_PER_USEC);
+ /* no overflow because we use monotonic timestamps */
+ solo_reg_write(solo_dev, SOLO_TIMER_SEC, (u32)ts.tv_sec);
+ solo_reg_write(solo_dev, SOLO_TIMER_USEC, (u32)ts.tv_nsec / NSEC_PER_USEC);
}

static void solo_timer_sync(struct solo_dev *solo_dev)
{
u32 sec, usec;
- struct timespec ts;
+ struct timespec64 ts;
long diff;

if (solo_dev->type != SOLO_DEV_6110)
@@ -72,11 +73,11 @@ static void solo_timer_sync(struct solo_dev *solo_dev)
sec = solo_reg_read(solo_dev, SOLO_TIMER_SEC);
usec = solo_reg_read(solo_dev, SOLO_TIMER_USEC);

- ktime_get_ts(&ts);
+ ktime_get_ts64(&ts);

- diff = (long)ts.tv_sec - (long)sec;
+ diff = (s32)ts.tv_sec - (s32)sec;
diff = (diff * 1000000)
- + ((long)(ts.tv_nsec / NSEC_PER_USEC) - (long)usec);
+ + ((s32)(ts.tv_nsec / NSEC_PER_USEC) - (s32)usec);

if (diff > 1000 || diff < -1000) {
solo_set_time(solo_dev);
--
2.9.0
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