net/mlx5: Use read-modify-write when changing PCMR register values

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Currently changing a PCMR field is done by setting the field in a
zeroed buffer, zeroing other unrelated fields.
Fix this behaviour by modifying only the required field after first
reading the current register values, as a pre-step towards using more
fields in PCMR register.

Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

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Eli Britstein 2019-01-21 09:00:42 +02:00 • committed by Saeed Mahameed

parent 2fce40a592

commit bfedc645de

1 changed files with 4 additions and 0 deletions

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

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