[PATCH 5.11 538/601] sfc: ef10: fix TX queue lookup in TX event handling

Greg Kroah-Hartman
2021-05-12T17:56:49Z

From: Edward Cree <ecree.xilinx@gmail.com>

[ Upstream commit 172e269edfce34bac7c61c15551816bda4b0f140 ]

We're starting from a TXQ label, not a TXQ type, so
efx_channel_get_tx_queue() is inappropriate. This worked by chance,
because labels and types currently match on EF10, but we shouldn't
rely on that.

Fixes: 12804793b17c ("sfc: decouple TXQ type from label")
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/sfc/ef10.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index da6886dcac37..4fa72b573c17 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -2928,8 +2928,7 @@ efx_ef10_handle_tx_event(struct efx_channel *channel, efx_qword_t *event)

/* Get the transmit queue */
tx_ev_q_label = EFX_QWORD_FIELD(*event, ESF_DZ_TX_QLABEL);
- tx_queue = efx_channel_get_tx_queue(channel,
- tx_ev_q_label % EFX_MAX_TXQ_PER_CHANNEL);
+ tx_queue = channel->tx_queue + (tx_ev_q_label % EFX_MAX_TXQ_PER_CHANNEL);

if (!tx_queue->timestamping) {
/* Transmit completion */
--
2.30.2