Commit f4a0be84 authored May 15, 2019 by Claudiu Manoil Committed by David S. Miller May 15, 2019

enetc: Fix NULL dma address unmap for Tx BD extensions



For the unlikely case of TxBD extensions (i.e. ptp)
the driver tries to unmap the tx_swbd corresponding
to the extension, which is bogus as it has no buffer
attached.

Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent cb07d915

drivers/net/ethernet/freescale/enetc/enetc.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -313,7 +313,9 @@ static bool enetc_clean_tx_ring(struct enetc_bdr *tx_ring, int napi_budget)
		while (bds_to_clean && tx_frm_cnt < ENETC_DEFAULT_TX_WORK) {
		bool is_eof = !!tx_swbd->skb;

		if (likely(tx_swbd->dma))
		enetc_unmap_tx_buff(tx_ring, tx_swbd);

		if (is_eof) {
		napi_consume_skb(tx_swbd->skb, napi_budget);
		tx_swbd->skb = NULL;

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