| Message ID | 20191112123938.2346-1-benjamin.gaignard@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/dp_mst: Fix W=1 warnings | expand |
Le mer. 13 nov. 2019 à 08:55, Benjamin Gaignard <benjamin.gaignard@st.com> a écrit : > > Fix the warnings that show up with W=1. > They are all about unused but set variables. gentle ping to reviewers, Thanks, Benjamin > > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> > --- > drivers/gpu/drm/drm_dp_mst_topology.c | 50 +++++++++++++---------------------- > 1 file changed, 19 insertions(+), 31 deletions(-) > > diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c > index b854a422a523..6ff554be8000 100644 > --- a/drivers/gpu/drm/drm_dp_mst_topology.c > +++ b/drivers/gpu/drm/drm_dp_mst_topology.c > @@ -672,7 +672,6 @@ static bool drm_dp_sideband_msg_build(struct drm_dp_sideband_msg_rx *msg, > u8 *replybuf, u8 replybuflen, bool hdr) > { > int ret; > - u8 crc4; > > if (hdr) { > u8 hdrlen; > @@ -714,8 +713,6 @@ static bool drm_dp_sideband_msg_build(struct drm_dp_sideband_msg_rx *msg, > } > > if (msg->curchunk_idx >= msg->curchunk_len) { > - /* do CRC */ > - crc4 = drm_dp_msg_data_crc4(msg->chunk, msg->curchunk_len - 1); > /* copy chunk into bigger msg */ > memcpy(&msg->msg[msg->curlen], msg->chunk, msg->curchunk_len - 1); > msg->curlen += msg->curchunk_len - 1; > @@ -1744,14 +1741,13 @@ static u8 drm_dp_calculate_rad(struct drm_dp_mst_port *port, > */ > static bool drm_dp_port_setup_pdt(struct drm_dp_mst_port *port) > { > - int ret; > u8 rad[6], lct; > bool send_link = false; > switch (port->pdt) { > case DP_PEER_DEVICE_DP_LEGACY_CONV: > case DP_PEER_DEVICE_SST_SINK: > /* add i2c over sideband */ > - ret = drm_dp_mst_register_i2c_bus(&port->aux); > + drm_dp_mst_register_i2c_bus(&port->aux); > break; > case DP_PEER_DEVICE_MST_BRANCHING: > lct = drm_dp_calculate_rad(port, rad); > @@ -1821,21 +1817,18 @@ ssize_t drm_dp_mst_dpcd_write(struct drm_dp_aux *aux, > > static void drm_dp_check_mstb_guid(struct drm_dp_mst_branch *mstb, u8 *guid) > { > - int ret; > - > memcpy(mstb->guid, guid, 16); > > if (!drm_dp_validate_guid(mstb->mgr, mstb->guid)) { > if (mstb->port_parent) { > - ret = drm_dp_send_dpcd_write( > + drm_dp_send_dpcd_write( > mstb->mgr, > mstb->port_parent, > DP_GUID, > 16, > mstb->guid); > } else { > - > - ret = drm_dp_dpcd_write( > + drm_dp_dpcd_write( > mstb->mgr->aux, > DP_GUID, > mstb->guid, > @@ -2427,14 +2420,14 @@ static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr, > { > struct drm_dp_sideband_msg_tx *txmsg; > struct drm_dp_link_address_ack_reply *reply; > - int i, len, ret; > + int i, ret; > > txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL); > if (!txmsg) > return; > > txmsg->dst = mstb; > - len = build_link_address(txmsg); > + build_link_address(txmsg); > > mstb->link_address_sent = true; > drm_dp_queue_down_tx(mgr, txmsg); > @@ -2476,7 +2469,6 @@ drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr, > { > struct drm_dp_enum_path_resources_ack_reply *path_res; > struct drm_dp_sideband_msg_tx *txmsg; > - int len; > int ret; > > txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL); > @@ -2484,7 +2476,7 @@ drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr, > return -ENOMEM; > > txmsg->dst = mstb; > - len = build_enum_path_resources(txmsg, port->port_num); > + build_enum_path_resources(txmsg, port->port_num); > > drm_dp_queue_down_tx(mgr, txmsg); > > @@ -2567,7 +2559,7 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr, > { > struct drm_dp_sideband_msg_tx *txmsg; > struct drm_dp_mst_branch *mstb; > - int len, ret, port_num; > + int ret, port_num; > u8 sinks[DRM_DP_MAX_SDP_STREAMS]; > int i; > > @@ -2592,9 +2584,9 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr, > sinks[i] = i; > > txmsg->dst = mstb; > - len = build_allocate_payload(txmsg, port_num, > - id, > - pbn, port->num_sdp_streams, sinks); > + build_allocate_payload(txmsg, port_num, > + id, > + pbn, port->num_sdp_streams, sinks); > > drm_dp_queue_down_tx(mgr, txmsg); > > @@ -2623,7 +2615,7 @@ int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, > struct drm_dp_mst_port *port, bool power_up) > { > struct drm_dp_sideband_msg_tx *txmsg; > - int len, ret; > + int ret; > > port = drm_dp_mst_topology_get_port_validated(mgr, port); > if (!port) > @@ -2636,7 +2628,7 @@ int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, > } > > txmsg->dst = port->parent; > - len = build_power_updown_phy(txmsg, port->port_num, power_up); > + build_power_updown_phy(txmsg, port->port_num, power_up); > drm_dp_queue_down_tx(mgr, txmsg); > > ret = drm_dp_mst_wait_tx_reply(port->parent, txmsg); > @@ -2856,7 +2848,6 @@ static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr, > struct drm_dp_mst_port *port, > int offset, int size, u8 *bytes) > { > - int len; > int ret = 0; > struct drm_dp_sideband_msg_tx *txmsg; > struct drm_dp_mst_branch *mstb; > @@ -2871,7 +2862,7 @@ static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr, > goto fail_put; > } > > - len = build_dpcd_read(txmsg, port->port_num, offset, size); > + build_dpcd_read(txmsg, port->port_num, offset, size); > txmsg->dst = port->parent; > > drm_dp_queue_down_tx(mgr, txmsg); > @@ -2909,7 +2900,6 @@ static int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr, > struct drm_dp_mst_port *port, > int offset, int size, u8 *bytes) > { > - int len; > int ret; > struct drm_dp_sideband_msg_tx *txmsg; > struct drm_dp_mst_branch *mstb; > @@ -2924,7 +2914,7 @@ static int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr, > goto fail_put; > } > > - len = build_dpcd_write(txmsg, port->port_num, offset, size, bytes); > + build_dpcd_write(txmsg, port->port_num, offset, size, bytes); > txmsg->dst = mstb; > > drm_dp_queue_down_tx(mgr, txmsg); > @@ -3147,7 +3137,7 @@ static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up) > { > int len; > u8 replyblock[32]; > - int replylen, origlen, curreply; > + int replylen, curreply; > int ret; > struct drm_dp_sideband_msg_rx *msg; > int basereg = up ? DP_SIDEBAND_MSG_UP_REQ_BASE : DP_SIDEBAND_MSG_DOWN_REP_BASE; > @@ -3167,7 +3157,6 @@ static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up) > } > replylen = msg->curchunk_len + msg->curchunk_hdrlen; > > - origlen = replylen; > replylen -= len; > curreply = len; > while (replylen > 0) { > @@ -3959,17 +3948,16 @@ void drm_dp_mst_dump_topology(struct seq_file *m, > mutex_lock(&mgr->lock); > if (mgr->mst_primary) { > u8 buf[DP_PAYLOAD_TABLE_SIZE]; > - int ret; > > - ret = drm_dp_dpcd_read(mgr->aux, DP_DPCD_REV, buf, DP_RECEIVER_CAP_SIZE); > + drm_dp_dpcd_read(mgr->aux, DP_DPCD_REV, buf, DP_RECEIVER_CAP_SIZE); > seq_printf(m, "dpcd: %*ph\n", DP_RECEIVER_CAP_SIZE, buf); > - ret = drm_dp_dpcd_read(mgr->aux, DP_FAUX_CAP, buf, 2); > + drm_dp_dpcd_read(mgr->aux, DP_FAUX_CAP, buf, 2); > seq_printf(m, "faux/mst: %*ph\n", 2, buf); > - ret = drm_dp_dpcd_read(mgr->aux, DP_MSTM_CTRL, buf, 1); > + drm_dp_dpcd_read(mgr->aux, DP_MSTM_CTRL, buf, 1); > seq_printf(m, "mst ctrl: %*ph\n", 1, buf); > > /* dump the standard OUI branch header */ > - ret = drm_dp_dpcd_read(mgr->aux, DP_BRANCH_OUI, buf, DP_BRANCH_OUI_HEADER_SIZE); > + drm_dp_dpcd_read(mgr->aux, DP_BRANCH_OUI, buf, DP_BRANCH_OUI_HEADER_SIZE); > seq_printf(m, "branch oui: %*phN devid: ", 3, buf); > for (i = 0x3; i < 0x8 && buf[i]; i++) > seq_printf(m, "%c", buf[i]); > -- > 2.15.0 > > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/dri-devel
On Tue, 12 Nov 2019, Benjamin Gaignard <benjamin.gaignard@st.com> wrote: > Fix the warnings that show up with W=1. > They are all about unused but set variables. > > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> > --- > drivers/gpu/drm/drm_dp_mst_topology.c | 50 +++++++++++++---------------------- > 1 file changed, 19 insertions(+), 31 deletions(-) > > diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c > index b854a422a523..6ff554be8000 100644 > --- a/drivers/gpu/drm/drm_dp_mst_topology.c > +++ b/drivers/gpu/drm/drm_dp_mst_topology.c > @@ -672,7 +672,6 @@ static bool drm_dp_sideband_msg_build(struct drm_dp_sideband_msg_rx *msg, > u8 *replybuf, u8 replybuflen, bool hdr) > { > int ret; > - u8 crc4; > > if (hdr) { > u8 hdrlen; > @@ -714,8 +713,6 @@ static bool drm_dp_sideband_msg_build(struct drm_dp_sideband_msg_rx *msg, > } > > if (msg->curchunk_idx >= msg->curchunk_len) { > - /* do CRC */ > - crc4 = drm_dp_msg_data_crc4(msg->chunk, msg->curchunk_len - 1); Someone who knows this code really needs to check if we should be using crc4 instead of just throwing this away as unused. > /* copy chunk into bigger msg */ > memcpy(&msg->msg[msg->curlen], msg->chunk, msg->curchunk_len - 1); > msg->curlen += msg->curchunk_len - 1; > @@ -1744,14 +1741,13 @@ static u8 drm_dp_calculate_rad(struct drm_dp_mst_port *port, > */ > static bool drm_dp_port_setup_pdt(struct drm_dp_mst_port *port) The function changed in c485e2c97dae ("drm/dp_mst: Refactor pdt setup/teardown, add more locking"). > { > - int ret; > u8 rad[6], lct; > bool send_link = false; > switch (port->pdt) { > case DP_PEER_DEVICE_DP_LEGACY_CONV: > case DP_PEER_DEVICE_SST_SINK: > /* add i2c over sideband */ > - ret = drm_dp_mst_register_i2c_bus(&port->aux); > + drm_dp_mst_register_i2c_bus(&port->aux); > break; > case DP_PEER_DEVICE_MST_BRANCHING: > lct = drm_dp_calculate_rad(port, rad); > @@ -1821,21 +1817,18 @@ ssize_t drm_dp_mst_dpcd_write(struct drm_dp_aux *aux, > > static void drm_dp_check_mstb_guid(struct drm_dp_mst_branch *mstb, u8 *guid) > { > - int ret; > - > memcpy(mstb->guid, guid, 16); > > if (!drm_dp_validate_guid(mstb->mgr, mstb->guid)) { > if (mstb->port_parent) { > - ret = drm_dp_send_dpcd_write( > + drm_dp_send_dpcd_write( > mstb->mgr, > mstb->port_parent, > DP_GUID, > 16, > mstb->guid); Indentation could be fixed while at it. > } else { > - > - ret = drm_dp_dpcd_write( > + drm_dp_dpcd_write( > mstb->mgr->aux, > DP_GUID, > mstb->guid, > @@ -2427,14 +2420,14 @@ static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr, > { > struct drm_dp_sideband_msg_tx *txmsg; > struct drm_dp_link_address_ack_reply *reply; > - int i, len, ret; > + int i, ret; > > txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL); > if (!txmsg) > return; > > txmsg->dst = mstb; > - len = build_link_address(txmsg); > + build_link_address(txmsg); Maybe you should make the function void while at it? > > mstb->link_address_sent = true; > drm_dp_queue_down_tx(mgr, txmsg); > @@ -2476,7 +2469,6 @@ drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr, > { > struct drm_dp_enum_path_resources_ack_reply *path_res; > struct drm_dp_sideband_msg_tx *txmsg; > - int len; > int ret; > > txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL); > @@ -2484,7 +2476,7 @@ drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr, > return -ENOMEM; > > txmsg->dst = mstb; > - len = build_enum_path_resources(txmsg, port->port_num); > + build_enum_path_resources(txmsg, port->port_num); Maybe you should make the function void while at it? > drm_dp_queue_down_tx(mgr, txmsg); > > @@ -2567,7 +2559,7 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr, > { > struct drm_dp_sideband_msg_tx *txmsg; > struct drm_dp_mst_branch *mstb; > - int len, ret, port_num; > + int ret, port_num; > u8 sinks[DRM_DP_MAX_SDP_STREAMS]; > int i; > > @@ -2592,9 +2584,9 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr, > sinks[i] = i; > > txmsg->dst = mstb; > - len = build_allocate_payload(txmsg, port_num, > - id, > - pbn, port->num_sdp_streams, sinks); > + build_allocate_payload(txmsg, port_num, > + id, > + pbn, port->num_sdp_streams, sinks); Maybe you should make the function void while at it? > > drm_dp_queue_down_tx(mgr, txmsg); > > @@ -2623,7 +2615,7 @@ int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, > struct drm_dp_mst_port *port, bool power_up) > { > struct drm_dp_sideband_msg_tx *txmsg; > - int len, ret; > + int ret; > > port = drm_dp_mst_topology_get_port_validated(mgr, port); > if (!port) > @@ -2636,7 +2628,7 @@ int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, > } > > txmsg->dst = port->parent; > - len = build_power_updown_phy(txmsg, port->port_num, power_up); > + build_power_updown_phy(txmsg, port->port_num, power_up); Maybe you should make the function void while at it? > drm_dp_queue_down_tx(mgr, txmsg); > > ret = drm_dp_mst_wait_tx_reply(port->parent, txmsg); > @@ -2856,7 +2848,6 @@ static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr, > struct drm_dp_mst_port *port, > int offset, int size, u8 *bytes) > { > - int len; > int ret = 0; > struct drm_dp_sideband_msg_tx *txmsg; > struct drm_dp_mst_branch *mstb; > @@ -2871,7 +2862,7 @@ static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr, > goto fail_put; > } > > - len = build_dpcd_read(txmsg, port->port_num, offset, size); > + build_dpcd_read(txmsg, port->port_num, offset, size); Maybe you should make the function void while at it? > txmsg->dst = port->parent; > > drm_dp_queue_down_tx(mgr, txmsg); > @@ -2909,7 +2900,6 @@ static int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr, > struct drm_dp_mst_port *port, > int offset, int size, u8 *bytes) > { > - int len; > int ret; > struct drm_dp_sideband_msg_tx *txmsg; > struct drm_dp_mst_branch *mstb; > @@ -2924,7 +2914,7 @@ static int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr, > goto fail_put; > } > > - len = build_dpcd_write(txmsg, port->port_num, offset, size, bytes); > + build_dpcd_write(txmsg, port->port_num, offset, size, bytes); Maybe you should make the function void while at it? > txmsg->dst = mstb; > > drm_dp_queue_down_tx(mgr, txmsg); > @@ -3147,7 +3137,7 @@ static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up) > { > int len; > u8 replyblock[32]; > - int replylen, origlen, curreply; > + int replylen, curreply; > int ret; > struct drm_dp_sideband_msg_rx *msg; > int basereg = up ? DP_SIDEBAND_MSG_UP_REQ_BASE : DP_SIDEBAND_MSG_DOWN_REP_BASE; > @@ -3167,7 +3157,6 @@ static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up) > } > replylen = msg->curchunk_len + msg->curchunk_hdrlen; > > - origlen = replylen; > replylen -= len; > curreply = len; > while (replylen > 0) { > @@ -3959,17 +3948,16 @@ void drm_dp_mst_dump_topology(struct seq_file *m, > mutex_lock(&mgr->lock); > if (mgr->mst_primary) { > u8 buf[DP_PAYLOAD_TABLE_SIZE]; > - int ret; > > - ret = drm_dp_dpcd_read(mgr->aux, DP_DPCD_REV, buf, DP_RECEIVER_CAP_SIZE); > + drm_dp_dpcd_read(mgr->aux, DP_DPCD_REV, buf, DP_RECEIVER_CAP_SIZE); > seq_printf(m, "dpcd: %*ph\n", DP_RECEIVER_CAP_SIZE, buf); > - ret = drm_dp_dpcd_read(mgr->aux, DP_FAUX_CAP, buf, 2); > + drm_dp_dpcd_read(mgr->aux, DP_FAUX_CAP, buf, 2); > seq_printf(m, "faux/mst: %*ph\n", 2, buf); > - ret = drm_dp_dpcd_read(mgr->aux, DP_MSTM_CTRL, buf, 1); > + drm_dp_dpcd_read(mgr->aux, DP_MSTM_CTRL, buf, 1); > seq_printf(m, "mst ctrl: %*ph\n", 1, buf); > > /* dump the standard OUI branch header */ > - ret = drm_dp_dpcd_read(mgr->aux, DP_BRANCH_OUI, buf, DP_BRANCH_OUI_HEADER_SIZE); > + drm_dp_dpcd_read(mgr->aux, DP_BRANCH_OUI, buf, DP_BRANCH_OUI_HEADER_SIZE); > seq_printf(m, "branch oui: %*phN devid: ", 3, buf); > for (i = 0x3; i < 0x8 && buf[i]; i++) > seq_printf(m, "%c", buf[i]);
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index b854a422a523..6ff554be8000 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -672,7 +672,6 @@ static bool drm_dp_sideband_msg_build(struct drm_dp_sideband_msg_rx *msg, u8 *replybuf, u8 replybuflen, bool hdr) { int ret; - u8 crc4; if (hdr) { u8 hdrlen; @@ -714,8 +713,6 @@ static bool drm_dp_sideband_msg_build(struct drm_dp_sideband_msg_rx *msg, } if (msg->curchunk_idx >= msg->curchunk_len) { - /* do CRC */ - crc4 = drm_dp_msg_data_crc4(msg->chunk, msg->curchunk_len - 1); /* copy chunk into bigger msg */ memcpy(&msg->msg[msg->curlen], msg->chunk, msg->curchunk_len - 1); msg->curlen += msg->curchunk_len - 1; @@ -1744,14 +1741,13 @@ static u8 drm_dp_calculate_rad(struct drm_dp_mst_port *port, */ static bool drm_dp_port_setup_pdt(struct drm_dp_mst_port *port) { - int ret; u8 rad[6], lct; bool send_link = false; switch (port->pdt) { case DP_PEER_DEVICE_DP_LEGACY_CONV: case DP_PEER_DEVICE_SST_SINK: /* add i2c over sideband */ - ret = drm_dp_mst_register_i2c_bus(&port->aux); + drm_dp_mst_register_i2c_bus(&port->aux); break; case DP_PEER_DEVICE_MST_BRANCHING: lct = drm_dp_calculate_rad(port, rad); @@ -1821,21 +1817,18 @@ ssize_t drm_dp_mst_dpcd_write(struct drm_dp_aux *aux, static void drm_dp_check_mstb_guid(struct drm_dp_mst_branch *mstb, u8 *guid) { - int ret; - memcpy(mstb->guid, guid, 16); if (!drm_dp_validate_guid(mstb->mgr, mstb->guid)) { if (mstb->port_parent) { - ret = drm_dp_send_dpcd_write( + drm_dp_send_dpcd_write( mstb->mgr, mstb->port_parent, DP_GUID, 16, mstb->guid); } else { - - ret = drm_dp_dpcd_write( + drm_dp_dpcd_write( mstb->mgr->aux, DP_GUID, mstb->guid, @@ -2427,14 +2420,14 @@ static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr, { struct drm_dp_sideband_msg_tx *txmsg; struct drm_dp_link_address_ack_reply *reply; - int i, len, ret; + int i, ret; txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL); if (!txmsg) return; txmsg->dst = mstb; - len = build_link_address(txmsg); + build_link_address(txmsg); mstb->link_address_sent = true; drm_dp_queue_down_tx(mgr, txmsg); @@ -2476,7 +2469,6 @@ drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr, { struct drm_dp_enum_path_resources_ack_reply *path_res; struct drm_dp_sideband_msg_tx *txmsg; - int len; int ret; txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL); @@ -2484,7 +2476,7 @@ drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr, return -ENOMEM; txmsg->dst = mstb; - len = build_enum_path_resources(txmsg, port->port_num); + build_enum_path_resources(txmsg, port->port_num); drm_dp_queue_down_tx(mgr, txmsg); @@ -2567,7 +2559,7 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr, { struct drm_dp_sideband_msg_tx *txmsg; struct drm_dp_mst_branch *mstb; - int len, ret, port_num; + int ret, port_num; u8 sinks[DRM_DP_MAX_SDP_STREAMS]; int i; @@ -2592,9 +2584,9 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr, sinks[i] = i; txmsg->dst = mstb; - len = build_allocate_payload(txmsg, port_num, - id, - pbn, port->num_sdp_streams, sinks); + build_allocate_payload(txmsg, port_num, + id, + pbn, port->num_sdp_streams, sinks); drm_dp_queue_down_tx(mgr, txmsg); @@ -2623,7 +2615,7 @@ int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, bool power_up) { struct drm_dp_sideband_msg_tx *txmsg; - int len, ret; + int ret; port = drm_dp_mst_topology_get_port_validated(mgr, port); if (!port) @@ -2636,7 +2628,7 @@ int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, } txmsg->dst = port->parent; - len = build_power_updown_phy(txmsg, port->port_num, power_up); + build_power_updown_phy(txmsg, port->port_num, power_up); drm_dp_queue_down_tx(mgr, txmsg); ret = drm_dp_mst_wait_tx_reply(port->parent, txmsg); @@ -2856,7 +2848,6 @@ static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, int offset, int size, u8 *bytes) { - int len; int ret = 0; struct drm_dp_sideband_msg_tx *txmsg; struct drm_dp_mst_branch *mstb; @@ -2871,7 +2862,7 @@ static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr, goto fail_put; } - len = build_dpcd_read(txmsg, port->port_num, offset, size); + build_dpcd_read(txmsg, port->port_num, offset, size); txmsg->dst = port->parent; drm_dp_queue_down_tx(mgr, txmsg); @@ -2909,7 +2900,6 @@ static int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, int offset, int size, u8 *bytes) { - int len; int ret; struct drm_dp_sideband_msg_tx *txmsg; struct drm_dp_mst_branch *mstb; @@ -2924,7 +2914,7 @@ static int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr, goto fail_put; } - len = build_dpcd_write(txmsg, port->port_num, offset, size, bytes); + build_dpcd_write(txmsg, port->port_num, offset, size, bytes); txmsg->dst = mstb; drm_dp_queue_down_tx(mgr, txmsg); @@ -3147,7 +3137,7 @@ static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up) { int len; u8 replyblock[32]; - int replylen, origlen, curreply; + int replylen, curreply; int ret; struct drm_dp_sideband_msg_rx *msg; int basereg = up ? DP_SIDEBAND_MSG_UP_REQ_BASE : DP_SIDEBAND_MSG_DOWN_REP_BASE; @@ -3167,7 +3157,6 @@ static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up) } replylen = msg->curchunk_len + msg->curchunk_hdrlen; - origlen = replylen; replylen -= len; curreply = len; while (replylen > 0) { @@ -3959,17 +3948,16 @@ void drm_dp_mst_dump_topology(struct seq_file *m, mutex_lock(&mgr->lock); if (mgr->mst_primary) { u8 buf[DP_PAYLOAD_TABLE_SIZE]; - int ret; - ret = drm_dp_dpcd_read(mgr->aux, DP_DPCD_REV, buf, DP_RECEIVER_CAP_SIZE); + drm_dp_dpcd_read(mgr->aux, DP_DPCD_REV, buf, DP_RECEIVER_CAP_SIZE); seq_printf(m, "dpcd: %*ph\n", DP_RECEIVER_CAP_SIZE, buf); - ret = drm_dp_dpcd_read(mgr->aux, DP_FAUX_CAP, buf, 2); + drm_dp_dpcd_read(mgr->aux, DP_FAUX_CAP, buf, 2); seq_printf(m, "faux/mst: %*ph\n", 2, buf); - ret = drm_dp_dpcd_read(mgr->aux, DP_MSTM_CTRL, buf, 1); + drm_dp_dpcd_read(mgr->aux, DP_MSTM_CTRL, buf, 1); seq_printf(m, "mst ctrl: %*ph\n", 1, buf); /* dump the standard OUI branch header */ - ret = drm_dp_dpcd_read(mgr->aux, DP_BRANCH_OUI, buf, DP_BRANCH_OUI_HEADER_SIZE); + drm_dp_dpcd_read(mgr->aux, DP_BRANCH_OUI, buf, DP_BRANCH_OUI_HEADER_SIZE); seq_printf(m, "branch oui: %*phN devid: ", 3, buf); for (i = 0x3; i < 0x8 && buf[i]; i++) seq_printf(m, "%c", buf[i]);
Fix the warnings that show up with W=1. They are all about unused but set variables. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> --- drivers/gpu/drm/drm_dp_mst_topology.c | 50 +++++++++++++---------------------- 1 file changed, 19 insertions(+), 31 deletions(-)