On Wed, Sep 26, 2018 at 06:10:10PM -0700, Nathan Chancellor wrote:
> Clang warns when an emumerated type is implicitly converted to another.
>
> drivers/infiniband/sw/rxe/rxe.c:106:27: warning: implicit conversion
> from enumeration type 'enum rxe_device_param' to different enumeration
> type 'enum ib_atomic_cap' [-Wenum-conversion]
> rxe->attr.atomic_cap = RXE_ATOMIC_CAP;
> ~ ^~~~~~~~~~~~~~
> drivers/infiniband/sw/rxe/rxe.c:131:22: warning: implicit conversion
> from enumeration type 'enum rxe_port_param' to different enumeration
> type 'enum ib_port_state' [-Wenum-conversion]
> port->attr.state = RXE_PORT_STATE;
> ~ ^~~~~~~~~~~~~~
> drivers/infiniband/sw/rxe/rxe.c:132:24: warning: implicit conversion
> from enumeration type 'enum rxe_port_param' to different enumeration
> type 'enum ib_mtu' [-Wenum-conversion]
> port->attr.max_mtu = RXE_PORT_MAX_MTU;
> ~ ^~~~~~~~~~~~~~~~
> drivers/infiniband/sw/rxe/rxe.c:133:27: warning: implicit conversion
> from enumeration type 'enum rxe_port_param' to different enumeration
> type 'enum ib_mtu' [-Wenum-conversion]
> port->attr.active_mtu = RXE_PORT_ACTIVE_MTU;
> ~ ^~~~~~~~~~~~~~~~~~~
> drivers/infiniband/sw/rxe/rxe.c:151:24: warning: implicit conversion
> from enumeration type 'enum rxe_port_param' to different enumeration
> type 'enum ib_mtu' [-Wenum-conversion]
> ib_mtu_enum_to_int(RXE_PORT_ACTIVE_MTU);
> ~~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~
> 5 warnings generated.
>
> Mark all of these conversions as explicit to make it clear that this is
> expected behavior. All of these values are mapped to a value from the
> expected type.
>
> Reported-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>
> drivers/infiniband/sw/rxe/rxe.c | 11 ++++++-----
> 1 file changed, 6 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c
> index 10999fa69281..cac5e038449b 100644
> +++ b/drivers/infiniband/sw/rxe/rxe.c
> @@ -103,7 +103,8 @@ static void rxe_init_device_param(struct rxe_dev *rxe)
> rxe->attr.max_res_rd_atom = RXE_MAX_RES_RD_ATOM;
> rxe->attr.max_qp_init_rd_atom = RXE_MAX_QP_INIT_RD_ATOM;
> rxe->attr.max_ee_init_rd_atom = RXE_MAX_EE_INIT_RD_ATOM;
> - rxe->attr.atomic_cap = RXE_ATOMIC_CAP;
> + rxe->attr.atomic_cap =
> + (enum ib_atomic_cap)RXE_ATOMIC_CAP;
Yikes, this is just a bug in the rxe driver, it shouldn't be coded
like that, use IB_ATOMIC_HCA directly
That giant thing in rxe_param.h is an abomination :(
> rxe->attr.max_ee = RXE_MAX_EE;
> rxe->attr.max_rdd = RXE_MAX_RDD;
> rxe->attr.max_mw = RXE_MAX_MW;
> @@ -128,9 +129,9 @@ static void rxe_init_device_param(struct rxe_dev *rxe)
> /* initialize port attributes */
> static int rxe_init_port_param(struct rxe_port *port)
> {
> - port->attr.state = RXE_PORT_STATE;
> - port->attr.max_mtu = RXE_PORT_MAX_MTU;
> - port->attr.active_mtu = RXE_PORT_ACTIVE_MTU;
> + port->attr.state = (enum ib_port_state)RXE_PORT_STATE;
> + port->attr.max_mtu = (enum ib_mtu)RXE_PORT_MAX_MTU;
> + port->attr.active_mtu = (enum ib_mtu)RXE_PORT_ACTIVE_MTU;
Similar problem.
> port->attr.gid_tbl_len = RXE_PORT_GID_TBL_LEN;
> port->attr.port_cap_flags = RXE_PORT_PORT_CAP_FLAGS;
> port->attr.max_msg_sz = RXE_PORT_MAX_MSG_SZ;
> @@ -148,7 +149,7 @@ static int rxe_init_port_param(struct rxe_port *port)
> port->attr.active_speed = RXE_PORT_ACTIVE_SPEED;
> port->attr.phys_state = RXE_PORT_PHYS_STATE;
> port->mtu_cap =
> - ib_mtu_enum_to_int(RXE_PORT_ACTIVE_MTU);
> + ib_mtu_enum_to_int((enum ib_mtu)RXE_PORT_ACTIVE_MTU);
And again
Jason
