igc: Remove stale comment about Tx timestamping

[ Upstream commit 47ce2956c7a61ff354723e28235205fa2012265b ]

The initial igc Tx timestamping implementation used only one register for
retrieving Tx timestamps. Commit 3ed247e78911 ("igc: Add support for
multiple in-flight TX timestamps") added support for utilizing all four of
them e.g., for multiple domain support. Remove the stale comment/FIXME.

Fixes: 3ed247e78911 ("igc: Add support for multiple in-flight TX timestamps")
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index fc1de116d55486a9327019a21116d2bd6eb003fc..e83700ad7e6229ec8264e08163bcbd9073acbd83 100644 (file)
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -1640,10 +1640,6 @@ done:
 
        if (unlikely(test_bit(IGC_RING_FLAG_TX_HWTSTAMP, &tx_ring->flags) &&
                     skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
-               /* FIXME: add support for retrieving timestamps from
-                * the other timer registers before skipping the
-                * timestamping request.
-                */
                unsigned long flags;
                u32 tstamp_flags;