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Message-Id: <20121122004034.452636003@linuxfoundation.org>
Date: Wed, 21 Nov 2012 16:39:17 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
alan@...rguk.ukuu.org.uk, Jacob Keller <jacob.e.keller@...el.com>,
Richard Cochran <richard.cochran@...il.com>,
John Stultz <john.stultz@...aro.org>,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
"David S. Miller" <davem@...emloft.net>
Subject: [ 011/171] ptp: update adjfreq callback description
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jacob Keller <jacob.e.keller@...el.com>
commit 87f4d7c1d36f44b0822053b7e5dedc31fdd0ab99 upstream.
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: Jacob Keller <jacob.e.keller@...el.com>
CC: Richard Cochran <richard.cochran@...il.com>
CC: John Stultz <john.stultz@...aro.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
include/linux/ptp_clock_kernel.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/include/linux/ptp_clock_kernel.h
+++ b/include/linux/ptp_clock_kernel.h
@@ -50,7 +50,8 @@ struct ptp_clock_request {
* clock operations
*
* @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.
* parameter delta: Desired change in nanoseconds.
--
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