From: Radu Bulie radu-andrei.bulie@nxp.com
stable inclusion from stable-v5.10.102 commit 016e3ca9c588a6793542d6a8d40c15027654f82e bugzilla: https://gitee.com/openeuler/kernel/issues/I567K6
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit 07dd44852be89386ab12210df90a2d78779f3bff upstream.
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: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yu Liao liaoyu15@huawei.com Reviewed-by: Wei Li liwei391@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.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 f917bc9c8796..d89ddc165ec2 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c @@ -4225,7 +4225,7 @@ 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);
/* Obtain a MC portal */