ptp: link the phc device to its parent device

PTP Hardware Clock devices appear as class devices in sysfs. This patch
changes the registration API to use the parent device, clarifying the
clock's relationship to the underlying device.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 5 insertions, 4 deletions

diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c
index c470ddf1a6fa..79f4bce061bd 100644
--- a/drivers/ptp/ptp_clock.c
+++ b/drivers/ptp/ptp_clock.c
@@ -182,7 +182,8 @@ static void delete_ptp_clock(struct posix_clock *pc)
 
 /* public interface */
 
-struct ptp_clock *ptp_clock_register(struct ptp_clock_info *info)
+struct ptp_clock *ptp_clock_register(struct ptp_clock_info *info,
+                                     struct device *parent)
 {
         struct ptp_clock *ptp;
         int err = 0, index, major = MAJOR(ptp_devt);
@@ -215,7 +216,7 @@ struct ptp_clock *ptp_clock_register(struct ptp_clock_info *info)
         init_waitqueue_head(&ptp->tsev_wq);
 
         /* Create a new device in our class. */
-        ptp->dev = device_create(ptp_class, NULL, ptp->devid, ptp,
+        ptp->dev = device_create(ptp_class, parent, ptp->devid, ptp,
                                  "ptp%d", ptp->index);
         if (IS_ERR(ptp->dev))
                 goto no_device;
diff --git a/drivers/ptp/ptp_ixp46x.c b/drivers/ptp/ptp_ixp46x.c
index e03c40692b00..d49b85164fd2 100644
--- a/drivers/ptp/ptp_ixp46x.c
+++ b/drivers/ptp/ptp_ixp46x.c
@@ -298,7 +298,7 @@ static int __init ptp_ixp_init(void)
 
         ixp_clock.caps = ptp_ixp_caps;
 
-        ixp_clock.ptp_clock = ptp_clock_register(&ixp_clock.caps);
+        ixp_clock.ptp_clock = ptp_clock_register(&ixp_clock.caps, NULL);
 
         if (IS_ERR(ixp_clock.ptp_clock))
                 return PTR_ERR(ixp_clock.ptp_clock);
diff --git a/drivers/ptp/ptp_pch.c b/drivers/ptp/ptp_pch.c
index 3a9c17eced10..e624e4dd2abb 100644
--- a/drivers/ptp/ptp_pch.c
+++ b/drivers/ptp/ptp_pch.c
@@ -627,7 +627,7 @@ pch_probe(struct pci_dev *pdev, const struct pci_device_id *id)
         }
 
         chip->caps = ptp_pch_caps;
-        chip->ptp_clock = ptp_clock_register(&chip->caps);
+        chip->ptp_clock = ptp_clock_register(&chip->caps, &pdev->dev);
 
         if (IS_ERR(chip->ptp_clock))
                 return PTR_ERR(chip->ptp_clock);