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authorVadim Pasternak <vadimp@mellanox.com>2017-11-01 14:10:42 +0300
committerDavid S. Miller <davem@davemloft.net>2017-11-01 14:40:58 +0300
commitd70eaa386bf9ecc1e5b3002f64eb59172fcec4fd (patch)
treee7ec45ab653b8941a19d360e22d2e9af8000ecb2 /drivers
parent122f00cdc1bb27cb0ff4b0a8cffa3bb27f61f949 (diff)
downloadlinux-d70eaa386bf9ecc1e5b3002f64eb59172fcec4fd.tar.xz
mlxsw: i2c: Fix buffer increment counter for write transaction
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: 6882b0aee180 ("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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/i2c.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/i2c.c b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
index 12c3a4449120..c0dcfa05b077 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/i2c.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
@@ -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;