[E1000-devel] [PATCH 1/1] fixed race between eop read and DD-check for e1000 in e1000_clean_tx_irq()

[Dmitry Skorodumov]

if between "eop = tx_ring->buffer_info[i].next_to_watch" and check for DD-status
CPU is interrupted and another CPU queues send and hardware completes the send,
then we next_to_watch changes and we go inside cycle with invalid eop
with buffer_info->skb NULL. The solution is to reread eop at after DD-check.

Signed-off-by: Dmitry Skorodumov <sdmi...@parallels.com>

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