From: Arnd Bergmann Date: Fri, 23 Feb 2018 13:15:32 +0000 (+0100) Subject: mlxsw: spectrum_kvdl: avoid uninitialized variable warning X-Git-Tag: Ubuntu-5.0.0-8.9~2754^2~365 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=ed2da6270ed9ea37d39e9ab597fc5b3b4215ae2a;p=mirror_ubuntu-disco-kernel.git mlxsw: spectrum_kvdl: avoid uninitialized variable warning 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 Acked-by: Arkadi Sharshevsky Signed-off-by: David S. Miller --- 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);