mlxsw: i2c: Limit single transaction buffer size

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Maximum size of buffer is obtained from underlying I2C adapter and in
case adapter allows I2C transaction buffer size greater than 100 bytes,
transaction will fail due to firmware limitation.

As a result driver will fail initialization.

Limit the maximum size of transaction buffer by 100 bytes to fit to
firmware.

Remove unnecessary calculation:
max_t(u16, MLXSW_I2C_BLK_DEF, quirk_size).
This condition can not happened.

Fixes: 3029a693be ("mlxsw: i2c: Allow flexible setting of I2C transactions size")
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Vadim Pasternak 2023-08-24 15:43:09 +02:00 • committed by David S. Miller

parent 146c7c3305

commit d7248f1cc8

1 changed files with 2 additions and 1 deletions

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drivers/net/ethernet/mellanox/mlxsw/i2c.c

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