pch_gbe: scale time stamps to nanoseconds

This patch fixes the helper functions that give the transmit and receive time stamps to return nanoseconds, instead of arbitrary clock ticks. [ RC - Rebased Takahiro's changes and wrote a commit message explaining the changes. ] Signed-off-by: Takahiro Shimizu <[email protected]> Signed-off-by: Richard Cochran <[email protected]> Signed-off-by: David S. Miller <[email protected]>
rtvt123 · Apr 21, 2012 · d50566c · d50566c
1 parent 5f568e5
commit d50566c
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Showing 2 changed files with 2 additions and 4 deletions.
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
@@ -101,8 +101,6 @@ const char pch_driver_version[] = DRV_VERSION;
 
 #ifdef CONFIG_PCH_PTP
 /* Macros for ieee1588 */
-#define TICKS_NS_SHIFT  5
-
 /* 0x40 Time Synchronization Channel Control Register Bits */
 #define MASTER_MODE   (1<<0)
 #define SLAVE_MODE    (0<<0)
@@ -183,7 +181,6 @@ static void pch_rx_timestamp(
 		goto out;
 
 	ns = pch_rx_snap_read(pdev);
-	ns <<= TICKS_NS_SHIFT;
 
 	shhwtstamps = skb_hwtstamps(skb);
 	memset(shhwtstamps, 0, sizeof(*shhwtstamps));
@@ -226,7 +223,6 @@ static void pch_tx_timestamp(
 	}
 
 	ns = pch_tx_snap_read(pdev);
-	ns <<= TICKS_NS_SHIFT;
 
 	memset(&shhwtstamps, 0, sizeof(shhwtstamps));
 	shhwtstamps.hwtstamp = ns_to_ktime(ns);

diff --git a/drivers/ptp/ptp_pch.c b/drivers/ptp/ptp_pch.c
@@ -261,6 +261,7 @@ u64 pch_rx_snap_read(struct pci_dev *pdev)
 
 	ns = ((u64) hi) << 32;
 	ns |= lo;
+	ns <<= TICKS_NS_SHIFT;
 
 	return ns;
 }
@@ -277,6 +278,7 @@ u64 pch_tx_snap_read(struct pci_dev *pdev)
 
 	ns = ((u64) hi) << 32;
 	ns |= lo;
+	ns <<= TICKS_NS_SHIFT;
 
 	return ns;
 }