From: Jacob Keller <jacob.e.kel...@intel.com>

This function was missing a documentation comment. Add one now.

Signed-off-by: Jacob Keller <jacob.e.kel...@intel.com>
Tested-by: Andrew Bowers <andrewx.bow...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
index 20f11ea641e2..376ad91d6a8d 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
@@ -851,6 +851,15 @@ void ixgbe_ptp_rx_rgtstamp(struct ixgbe_q_vector *q_vector,
        ixgbe_ptp_convert_to_hwtstamp(adapter, skb_hwtstamps(skb), regval);
 }
 
+/**
+ * ixgbe_ptp_get_ts_config - get current hardware timestamping configuration
+ * @adapter: pointer to adapter structure
+ * @ifr: ioctl data
+ *
+ * This function returns the current timestamping settings. Rather than
+ * attempt to deconstruct registers to fill in the values, simply keep a copy
+ * of the old settings around, and return a copy when requested.
+ */
 int ixgbe_ptp_get_ts_config(struct ixgbe_adapter *adapter, struct ifreq *ifr)
 {
        struct hwtstamp_config *config = &adapter->tstamp_config;
-- 
2.21.0

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