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>

1 files changed, 5 insertions, 2 deletions

diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h
index a644b29f1161..56c71b27112e 100644
--- a/include/linux/ptp_clock_kernel.h
+++ b/include/linux/ptp_clock_kernel.h
@@ -21,6 +21,7 @@
 #ifndef _PTP_CLOCK_KERNEL_H_
 #define _PTP_CLOCK_KERNEL_H_
 
+#include <linux/device.h>
 #include <linux/pps_kernel.h>
 #include <linux/ptp_clock.h>
 
@@ -93,10 +94,12 @@ struct ptp_clock;
 /**
  * ptp_clock_register() - register a PTP hardware clock driver
  *
- * @info:  Structure describing the new clock.
+ * @info:   Structure describing the new clock.
+ * @parent: Pointer to the parent device of the new clock.
  */
 
-extern struct ptp_clock *ptp_clock_register(struct ptp_clock_info *info);
+extern struct ptp_clock *ptp_clock_register(struct ptp_clock_info *info,
+                                            struct device *parent);
 
 /**
  * ptp_clock_unregister() - unregister a PTP hardware clock driver