net/mlx5: Avoid passing dma address 0 to firmware

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Currently the firmware can't work with a page with dma address 0.
Passing such an address to the firmware will cause the give_pages
command to fail.

To avoid this, in case we get a 0 dma address of a page from the
dma engine, we avoid passing it to FW by remapping to get an address
other than 0.

Fixes: bf0bf77f65 ('mlx5: Support communicating arbitrary host...')
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Noa Osherovich 2016-10-25 18:36:35 +03:00 • committed by David S. Miller

parent 04c0c1ab38

commit 6b276190c5

1 changed files with 18 additions and 8 deletions

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26

drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c

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