[PATCH net-next 4/8] ptp: deprecate gettime64() in favor of gettimex64()

[Miroslav Lichvar]

When a driver provides gettimex64(), use it in the PTP_SYS_OFFSET ioctl
and POSIX clock's gettime() instead of gettime64(). Drivers should
provide only one of the functions.

Cc: Richard Cochran <richardcoch...@gmail.com>
Cc: Jacob Keller <jacob.e.kel...@intel.com>
Signed-off-by: Miroslav Lichvar <mlich...@redhat.com>
---
 drivers/ptp/ptp_chardev.c        | 5 ++++-
 drivers/ptp/ptp_clock.c          | 5 ++++-
 include/linux/ptp_clock_kernel.h | 2 ++
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c
index aad0d36cf5c0..797fab33bb98 100644
--- a/drivers/ptp/ptp_chardev.c
+++ b/drivers/ptp/ptp_chardev.c
@@ -260,7 +260,10 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, 
unsigned long arg)
                        pct->sec = ts.tv_sec;
                        pct->nsec = ts.tv_nsec;
                        pct++;
-                       err = ptp->info->gettime64(ptp->info, &ts);
+                       if (ops->gettimex64)
+                               err = ops->gettimex64(ops, &ts, NULL);
+                       else
+                               err = ops->gettime64(ops, &ts);
                        if (err)
                                goto out;
                        pct->sec = ts.tv_sec;
diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c
index 5419a89d300e..40fda23e4b05 100644
--- a/drivers/ptp/ptp_clock.c
+++ b/drivers/ptp/ptp_clock.c
@@ -117,7 +117,10 @@ static int ptp_clock_gettime(struct posix_clock *pc, 
struct timespec64 *tp)
        struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
        int err;
 
-       err = ptp->info->gettime64(ptp->info, tp);
+       if (ptp->info->gettimex64)
+               err = ptp->info->gettimex64(ptp->info, tp, NULL);
+       else
+               err = ptp->info->gettime64(ptp->info, tp);
        return err;
 }
 
diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h
index a1ec0448e341..7121bbe76979 100644
--- a/include/linux/ptp_clock_kernel.h
+++ b/include/linux/ptp_clock_kernel.h
@@ -82,6 +82,8 @@ struct ptp_system_timestamp {
  *            parameter delta: Desired change in nanoseconds.
  *
  * @gettime64:  Reads the current time from the hardware clock.
+ *              This method is deprecated.  New drivers should implement
+ *              the @gettimex64 method instead.
  *              parameter ts: Holds the result.
  *
  * @gettimex64:  Reads the current time from the hardware clock and optionally
-- 
2.17.2