net: axienet: Fix TX ring slot available check

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The check for whether a TX ring slot was available was incorrect,
since a slot which had been loaded with transmit data but the device had
not started transmitting would be treated as available, potentially
causing non-transmitted slots to be overwritten. The control field in
the descriptor should be checked, rather than the status field (which may
only be updated when the device completes the entry).

Fixes: 8a3b7a252d ("drivers/net/ethernet/xilinx: added Xilinx AXI Ethernet driver")
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Robert Hancock 2022-01-18 15:41:29 -06:00 • committed by David S. Miller

parent 70f5817ded

commit 996defd7f8

1 changed files with 2 additions and 2 deletions

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drivers/net/ethernet/xilinx/xilinx_axienet_main.c

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