enetc: Fix NULL dma address unmap for Tx BD extensions

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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>

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Claudiu Manoil 2019-05-15 19:08:56 +03:00 • committed by David S. Miller

parent cb07d915bf

commit f4a0be84d7

1 changed files with 3 additions and 1 deletions

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

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