Commit 87f4d7c1 authored by Jacob Keller's avatar Jacob Keller Committed by David S. Miller

ptp: update adjfreq callback description

This patch updates the adjfreq callback description to include a note that the
delta in ppb is always relative to the base frequency, and not to the current
frequency of the hardware clock.
Signed-off-by: default avatarJacob Keller <jacob.e.keller@intel.com>
CC: stable@vger.kernel.org [v3.5+]
CC: Richard Cochran <richard.cochran@gmail.com>
CC: John Stultz <john.stultz@linaro.org>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0481776b
...@@ -54,7 +54,8 @@ struct ptp_clock_request { ...@@ -54,7 +54,8 @@ struct ptp_clock_request {
* clock operations * clock operations
* *
* @adjfreq: Adjusts the frequency of the hardware clock. * @adjfreq: Adjusts the frequency of the hardware clock.
* parameter delta: Desired period change in parts per billion. * parameter delta: Desired frequency offset from nominal frequency
* in parts per billion
* *
* @adjtime: Shifts the time of the hardware clock. * @adjtime: Shifts the time of the hardware clock.
* parameter delta: Desired change in nanoseconds. * parameter delta: Desired change in nanoseconds.
......
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