From 2eec76f580983daa4248b5e1bb5971b420230491 Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Tue, 3 Apr 2012 22:59:16 +0000 Subject: ptp: Add a method for obtaining the device index. This commit adds a method that MAC drivers may call in order to find out the device number of their associated PTP Hardware Clock. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller --- drivers/ptp/ptp_clock.c | 6 ++++++ include/linux/ptp_clock_kernel.h | 8 ++++++++ 2 files changed, 14 insertions(+) diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c index 10451a15e828..17731231bb2d 100644 --- a/drivers/ptp/ptp_clock.c +++ b/drivers/ptp/ptp_clock.c @@ -304,6 +304,12 @@ void ptp_clock_event(struct ptp_clock *ptp, struct ptp_clock_event *event) } EXPORT_SYMBOL(ptp_clock_event); +int ptp_clock_index(struct ptp_clock *ptp) +{ + return ptp->index; +} +EXPORT_SYMBOL(ptp_clock_index); + /* module operations */ static void __exit ptp_exit(void) diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h index dd2e44fba63e..945704c2ed65 100644 --- a/include/linux/ptp_clock_kernel.h +++ b/include/linux/ptp_clock_kernel.h @@ -136,4 +136,12 @@ struct ptp_clock_event { extern void ptp_clock_event(struct ptp_clock *ptp, struct ptp_clock_event *event); +/** + * ptp_clock_index() - obtain the device index of a PTP clock + * + * @ptp: The clock obtained from ptp_clock_register(). + */ + +extern int ptp_clock_index(struct ptp_clock *ptp); + #endif -- cgit v1.2.3