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mlxsw: i2c: Fix buffer increment counter for write transaction

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It fixes a problem for the last chunk where 'chunk_size' is smaller than
MLXSW_I2C_BLK_MAX and data is copied to the wrong offset, overriding
previous data.

Fixes: 6882b0aee1 ("mlxsw: Introduce support for I2C bus")
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vadim Pasternak 2017-11-01 12:10:42 +01:00 committed by David S. Miller
parent 122f00cdc1
commit d70eaa386b
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlxsw/i2c.c
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@ -294,7 +294,7 @@ mlxsw_i2c_write(struct device *dev, size_t in_mbox_size, u8 *in_mbox, int num,
write_tran.len = MLXSW_I2C_ADDR_WIDTH + chunk_size;
mlxsw_i2c_set_slave_addr(tran_buf, off);
memcpy(&tran_buf[MLXSW_I2C_ADDR_BUF_SIZE], in_mbox +
chunk_size * i, chunk_size);
MLXSW_I2C_BLK_MAX * i, chunk_size);
j = 0;
end = jiffies + timeout;