From bae115a2bb479142605726e6aa130f43f50e801a Mon Sep 17 00:00:00 2001 From: Kamal Heib Date: Sun, 29 Oct 2017 04:03:37 +0200 Subject: [PATCH] net/mlx5: FPGA, return -EINVAL if size is zero 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 Reviewed-by: Yevgeny Kliteynik Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/fpga/sdk.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/sdk.c b/drivers/net/ethernet/mellanox/mlx5/core/fpga/sdk.c index 3c11d6e2160a..14962969c5ba 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fpga/sdk.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/sdk.c @@ -66,6 +66,9 @@ static int mlx5_fpga_mem_read_i2c(struct mlx5_fpga_device *fdev, size_t size, u8 actual_size; int err; + if (!size) + return -EINVAL; + if (!fdev->mdev) return -ENOTCONN; @@ -95,6 +98,9 @@ static int mlx5_fpga_mem_write_i2c(struct mlx5_fpga_device *fdev, size_t size, u8 actual_size; int err; + if (!size) + return -EINVAL; + if (!fdev->mdev) return -ENOTCONN; -- 2.39.5