From: Paul Thomas pthomas8589@gmail.com
[ Upstream commit a62520473f15750cd1432d36b377a06cd7cff8d2 ]
Make sure SKBTX_HW_TSTAMP (i.e. SOF_TIMESTAMPING_TX_HARDWARE) has been enabled for this skb. It does fix the issue where normal socks that aren't expecting a timestamp will not wake up on select, but when a user does want a SOF_TIMESTAMPING_TX_HARDWARE it does work.
Signed-off-by: Paul Thomas pthomas8589@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Lee Jones lee.jones@linaro.org --- drivers/net/ethernet/cadence/macb_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index bc9ab227d055..5aff1b460151 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -852,7 +852,9 @@ static void macb_tx_interrupt(struct macb_queue *queue)
/* First, update TX stats if needed */ if (skb) { - if (gem_ptp_do_txstamp(queue, skb, desc) == 0) { + if (unlikely(skb_shinfo(skb)->tx_flags & + SKBTX_HW_TSTAMP) && + gem_ptp_do_txstamp(queue, skb, desc) == 0) { /* skb now belongs to timestamp buffer * and will be removed later */