From f5781efc9b9ac74231286760e36af50df41fa78f Mon Sep 17 00:00:00 2001
From: Radu Bulie <radu-andrei.bulie@nxp.com>
Date: Mon, 14 Feb 2022 19:45:34 +0200
Subject: [PATCH 02/11] dpaa2-eth: Initialize mutex used in one step
timestamping path
Git-commit: 07dd44852be89386ab12210df90a2d78779f3bff
Patch-mainline: v5.17-rc5
References: git-fixes
1588 Single Step Timestamping code path uses a mutex to
enforce atomicity for two events:
- update of ptp single step register
- transmit ptp event packet
Before this patch the mutex was not initialized. This
caused unexpected crashes in the Tx function.
Fixes: c55211892f463 ("dpaa2-eth: support PTP Sync packet one-step timestamping")
Signed-off-by: Radu Bulie <radu-andrei.bulie@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Denis Kirjanov <denis.kirjanov@suse.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index 2864cc356b61..b87602ad007e 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -4338,7 +4338,7 @@ static int dpaa2_eth_probe(struct fsl_mc_device *dpni_dev)
}
INIT_WORK(&priv->tx_onestep_tstamp, dpaa2_eth_tx_onestep_tstamp);
-
+ mutex_init(&priv->onestep_tstamp_lock);
skb_queue_head_init(&priv->tx_skbs);
priv->rx_copybreak = DPAA2_ETH_DEFAULT_COPYBREAK;
--
2.16.4