net/mlx5: FPGA, return -EINVAL if size is zero
authorKamal Heib <kamalh@mellanox.com>
Sun, 29 Oct 2017 02:03:37 +0000 (04:03 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 2 Jan 2018 19:31:12 +0000 (20:31 +0100)
commitcea58617977baafe4a1be8f55c8e55d21c6cfb20
treeb8b229184249ee2bbc31836aab788c6b2a4d1e44
parent5504319c6993d51565b582c685c3e09c0e07fded
net/mlx5: FPGA, return -EINVAL if size is zero

[ Upstream commit bae115a2bb479142605726e6aa130f43f50e801a ]

Currently, if a size of zero is passed to
mlx5_fpga_mem_{read|write}_i2c()
the "err" return value will not be initialized, which triggers gcc
warnings:

[..]/mlx5/core/fpga/sdk.c:87 mlx5_fpga_mem_read_i2c() error:
uninitialized symbol 'err'.
[..]/mlx5/core/fpga/sdk.c:115 mlx5_fpga_mem_write_i2c() error:
uninitialized symbol 'err'.

fix that.

Fixes: a9956d35d199 ('net/mlx5: FPGA, Add SBU infrastructure')
Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Reviewed-by: Yevgeny Kliteynik <kliteyn@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/ethernet/mellanox/mlx5/core/fpga/sdk.c