mlxsw: i2c: Limit single transaction buffer size

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[ Upstream commit d7248f1cc8 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Vadim Pasternak 2023-08-24 15:43:09 +02:00 • committed by Greg Kroah-Hartman

parent b97bbe8346

commit 634309d070

1 changed files with 2 additions and 1 deletions

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

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