mlx4: allow device removal by fixing dma unmap size

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After opening the network interface, Mellanox ConnectX device cannot be
removed by hotplug because it has not properly unmapped all DMA memory.

It happens that mlx4_en_activate_rx_rings overrides the variable that
keeps the size of the memory mapped.

This is fixed by passing to mlx4_en_destroy_rx_ring the same size that is
given to mlx4_en_create_rx_ring.

After applying this patch, hot unplugging the device works after opening
the interface.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Thadeu Lima de Souza Cascardo 2012-02-06 08:39:49 +00:00 • committed by David S. Miller

parent 4c41b36737

commit 68355f7113

3 changed files with 6 additions and 4 deletions

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3

drivers/net/ethernet/mellanox/mlx4/en_netdev.c

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4

drivers/net/ethernet/mellanox/mlx4/en_rx.c

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3

drivers/net/ethernet/mellanox/mlx4/mlx4_en.h

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