| Message ID | 20171127132027.1734806-3-arnd@arndb.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 27/Nov/2017 14:19, Arnd Bergmann wrote: > 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 > Signed-off-by: Ismael Luceno <ismael@iodev.co.uk>
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);
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(-)