| Message ID | 20180223131540.1065413-2-arnd@arndb.de |
|---|---|
| State | Accepted |
| Commit | ed2da6270ed9ea37d39e9ab597fc5b3b4215ae2a |
| Headers | show |
| Series | [net-next,1/2] mlxsw: spectrum_kvdl: use div_u64() for 64-bit division | expand |
On 02/23/2018 03:15 PM, Arnd Bergmann wrote: > gcc warns that 'resource_id' is not initialized if we don't come though > any of the three 'case' statements before: > > drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c: In function 'mlxsw_sp_kvdl_part_init': > drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c:275:8: error: 'resource_id' may be used uninitialized in this function [-Werror=maybe-uninitialized] > > In the current code, that won't happen, but it's more robust to explicitly > handle this by returning a failure from mlxsw_sp_kvdl_part_init. > > Fixes: 887839e6960d ("mlxsw: spectrum_kvdl: Add support for dynamic partition set") > Signed-off-by: Arnd Bergmann <arnd@arndb.de> > --- > drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c > index 6fd701db90c9..059eb3214328 100644 > --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c > +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c > @@ -270,6 +270,8 @@ static int mlxsw_sp_kvdl_part_init(struct mlxsw_sp *mlxsw_sp, > case MLXSW_SP_KVDL_PART_LARGE_CHUNKS: > resource_id = MLXSW_SP_RESOURCE_KVD_LINEAR_LARGE_CHUNKS; > break; > + default: > + return -EINVAL; > } > > err = devlink_resource_size_get(devlink, resource_id, &resource_size); > Acked-by: Arkadi Sharshevsky <arkadis@mellanox.com>
From: Arnd Bergmann <arnd@arndb.de> Date: Fri, 23 Feb 2018 14:15:32 +0100 > gcc warns that 'resource_id' is not initialized if we don't come though > any of the three 'case' statements before: > > drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c: In function 'mlxsw_sp_kvdl_part_init': > drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c:275:8: error: 'resource_id' may be used uninitialized in this function [-Werror=maybe-uninitialized] > > In the current code, that won't happen, but it's more robust to explicitly > handle this by returning a failure from mlxsw_sp_kvdl_part_init. > > Fixes: 887839e6960d ("mlxsw: spectrum_kvdl: Add support for dynamic partition set") > Signed-off-by: Arnd Bergmann <arnd@arndb.de> Applied.
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c index 6fd701db90c9..059eb3214328 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c @@ -270,6 +270,8 @@ static int mlxsw_sp_kvdl_part_init(struct mlxsw_sp *mlxsw_sp, case MLXSW_SP_KVDL_PART_LARGE_CHUNKS: resource_id = MLXSW_SP_RESOURCE_KVD_LINEAR_LARGE_CHUNKS; break; + default: + return -EINVAL; } err = devlink_resource_size_get(devlink, resource_id, &resource_size);
gcc warns that 'resource_id' is not initialized if we don't come though any of the three 'case' statements before: drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c: In function 'mlxsw_sp_kvdl_part_init': drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c:275:8: error: 'resource_id' may be used uninitialized in this function [-Werror=maybe-uninitialized] In the current code, that won't happen, but it's more robust to explicitly handle this by returning a failure from mlxsw_sp_kvdl_part_init. Fixes: 887839e6960d ("mlxsw: spectrum_kvdl: Add support for dynamic partition set") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c | 2 ++ 1 file changed, 2 insertions(+) -- 2.9.0