| Message ID | 20211127141953.GD24002@kili (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | [net-next] net/mlx5: SF, silence an uninitialized variable warning | expand |
On Sat, Nov 27, 2021 at 05:19:53PM +0300, Dan Carpenter wrote: > This code sometimes calls mlx5_sf_hw_table_hwc_init() when "ext_base_id" > is uninitialized. It's not used on that path, but it generates a static > checker warning to pass uninitialized variables to another function. > It may also generate runtime UBSan warnings depending on if the > mlx5_sf_hw_table_hwc_init() function is inlined or not. > > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> > --- > drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) Thanks, Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
On Sun, 2021-11-28 at 11:26 +0200, Leon Romanovsky wrote: > On Sat, Nov 27, 2021 at 05:19:53PM +0300, Dan Carpenter wrote: > > This code sometimes calls mlx5_sf_hw_table_hwc_init() when > > "ext_base_id" > > is uninitialized. It's not used on that path, but it generates a > > static > > checker warning to pass uninitialized variables to another > > function. > > It may also generate runtime UBSan warnings depending on if the > > mlx5_sf_hw_table_hwc_init() function is inlined or not. > > > > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> > > --- > > drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > Thanks, > Reviewed-by: Leon Romanovsky <leonro@nvidia.com> applied to net-next-mlx5.
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c b/drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c index 252d6017387d..17aa348989cb 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c @@ -247,7 +247,7 @@ int mlx5_sf_hw_table_init(struct mlx5_core_dev *dev) { struct mlx5_sf_hw_table *table; u16 max_ext_fn = 0; - u16 ext_base_id; + u16 ext_base_id = 0; u16 max_fn = 0; u16 base_id; int err;
This code sometimes calls mlx5_sf_hw_table_hwc_init() when "ext_base_id" is uninitialized. It's not used on that path, but it generates a static checker warning to pass uninitialized variables to another function. It may also generate runtime UBSan warnings depending on if the mlx5_sf_hw_table_hwc_init() function is inlined or not. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> --- drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)