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Message-Id: <149b5cc1b5813bb4052f8dff4cbe0b5be62d086e.1348332941.git.richardcochran@gmail.com> Date: Sat, 22 Sep 2012 19:02:04 +0200 From: Richard Cochran <richardcochran@...il.com> To: <netdev@...r.kernel.org> Cc: Ben Hutchings <bhutchings@...arflare.com>, David Miller <davem@...emloft.net>, Jacob Keller <jacob.e.keller@...el.com>, Jeff Kirsher <jeffrey.t.kirsher@...el.com>, John Stultz <john.stultz@...aro.org>, Matthew Vick <matthew.vick@...el.com> Subject: [PATCH V3 net-next 4/4] ptp: clarify the clock_name sysfs attribute There has been some confusion among PHC driver authors about the intended purpose of the clock_name attribute. This patch expands the documation in order to clarify how the clock_name field should be understood. Signed-off-by: Richard Cochran <richardcochran@...il.com> --- Documentation/ABI/testing/sysfs-ptp | 6 +++++- include/linux/ptp_clock_kernel.h | 4 +++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-ptp b/Documentation/ABI/testing/sysfs-ptp index d40d2b5..05aeedf 100644 --- a/Documentation/ABI/testing/sysfs-ptp +++ b/Documentation/ABI/testing/sysfs-ptp @@ -19,7 +19,11 @@ Date: September 2010 Contact: Richard Cochran <richardcochran@...il.com> Description: This file contains the name of the PTP hardware clock - as a human readable string. + as a human readable string. The purpose of this + attribute is to provide the user with a "friendly + name" and to help distinguish PHY based devices from + MAC based ones. The string does not necessarily have + to be any kind of unique id. What: /sys/class/ptp/ptpN/max_adjustment Date: September 2010 diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h index 56c71b2..f2dc6d8 100644 --- a/include/linux/ptp_clock_kernel.h +++ b/include/linux/ptp_clock_kernel.h @@ -42,7 +42,9 @@ struct ptp_clock_request { * struct ptp_clock_info - decribes a PTP hardware clock * * @owner: The clock driver should set to THIS_MODULE. - * @name: A short name to identify the clock. + * @name: A short "friendly name" to identify the clock and to + * help distinguish PHY based devices from MAC based ones. + * The string is not meant to be a unique id. * @max_adj: The maximum possible frequency adjustment, in parts per billon. * @n_alarm: The number of programmable alarms. * @n_ext_ts: The number of external time stamp channels. -- 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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