diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c index a163ba55b061970541a5cf3512ea5d07ec2a4bd1..cd48a99ee9131290ba72febc9b8187e5f2a21a6b 100644 --- a/drivers/usb/typec/tcpm.c +++ b/drivers/usb/typec/tcpm.c @@ -1033,7 +1033,7 @@ static int tcpm_pd_svdm(struct tcpm_port *port, const __le32 *payload, int cnt, break; case CMDT_RSP_ACK: /* silently drop message if we are not connected */ - if (!port->partner) + if (IS_ERR_OR_NULL(port->partner)) break; switch (cmd) { @@ -3732,8 +3732,8 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) port->port_type = tcpc->config->type; port->typec_port = typec_register_port(port->dev, &port->typec_caps); - if (!port->typec_port) { - err = -ENOMEM; + if (IS_ERR(port->typec_port)) { + err = PTR_ERR(port->typec_port); goto out_destroy_wq; } @@ -3742,15 +3742,17 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) i = 0; while (paltmode->svid && i < ARRAY_SIZE(port->port_altmode)) { - port->port_altmode[i] = - typec_port_register_altmode(port->typec_port, - paltmode); - if (!port->port_altmode[i]) { + struct typec_altmode *alt; + + alt = typec_port_register_altmode(port->typec_port, + paltmode); + if (IS_ERR(alt)) { tcpm_log(port, "%s: failed to register port alternate mode 0x%x", dev_name(dev), paltmode->svid); break; } + port->port_altmode[i] = alt; i++; paltmode++; } diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c index 2719f5d382f76505d8c0eaf56a0e047f7e8e128b..37a15c14a6c6fa5055ab695c5a61c75343f6b12a 100644 --- a/drivers/usb/typec/tps6598x.c +++ b/drivers/usb/typec/tps6598x.c @@ -158,15 +158,15 @@ static int tps6598x_connect(struct tps6598x *tps, u32 status) desc.identity = &tps->partner_identity; } - tps->partner = typec_register_partner(tps->port, &desc); - if (!tps->partner) - return -ENODEV; - typec_set_pwr_opmode(tps->port, mode); typec_set_pwr_role(tps->port, TPS_STATUS_PORTROLE(status)); typec_set_vconn_role(tps->port, TPS_STATUS_VCONN(status)); typec_set_data_role(tps->port, TPS_STATUS_DATAROLE(status)); + tps->partner = typec_register_partner(tps->port, &desc); + if (IS_ERR(tps->partner)) + return PTR_ERR(tps->partner); + if (desc.identity) typec_partner_set_identity(tps->partner); @@ -175,7 +175,8 @@ static int tps6598x_connect(struct tps6598x *tps, u32 status) static void tps6598x_disconnect(struct tps6598x *tps, u32 status) { - typec_unregister_partner(tps->partner); + if (!IS_ERR(tps->partner)) + typec_unregister_partner(tps->partner); tps->partner = NULL; typec_set_pwr_opmode(tps->port, TYPEC_PWR_MODE_USB); typec_set_pwr_role(tps->port, TPS_STATUS_PORTROLE(status)); @@ -418,8 +419,8 @@ static int tps6598x_probe(struct i2c_client *client) tps->typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE; tps->port = typec_register_port(&client->dev, &tps->typec_cap); - if (!tps->port) - return -ENODEV; + if (IS_ERR(tps->port)) + return PTR_ERR(tps->port); if (status & TPS_STATUS_PLUG_PRESENT) { ret = tps6598x_connect(tps, status); diff --git a/drivers/usb/typec/typec.c b/drivers/usb/typec/typec.c index 735726ced6024dcd1253b8a987ae0e945145d135..dc28ad868d931c02f92c636c314ecf028f078f3f 100644 --- a/drivers/usb/typec/typec.c +++ b/drivers/usb/typec/typec.c @@ -386,7 +386,7 @@ typec_register_altmode(struct device *parent, alt = kzalloc(sizeof(*alt), GFP_KERNEL); if (!alt) - return NULL; + return ERR_PTR(-ENOMEM); alt->svid = desc->svid; alt->n_modes = desc->n_modes; @@ -402,7 +402,7 @@ typec_register_altmode(struct device *parent, dev_err(parent, "failed to register alternate mode (%d)\n", ret); put_device(&alt->dev); - return NULL; + return ERR_PTR(ret); } return alt; @@ -417,7 +417,7 @@ typec_register_altmode(struct device *parent, */ void typec_unregister_altmode(struct typec_altmode *alt) { - if (alt) + if (!IS_ERR_OR_NULL(alt)) device_unregister(&alt->dev); } EXPORT_SYMBOL_GPL(typec_unregister_altmode); @@ -509,7 +509,7 @@ EXPORT_SYMBOL_GPL(typec_partner_register_altmode); * * Registers a device for USB Type-C Partner described in @desc. * - * Returns handle to the partner on success or NULL on failure. + * Returns handle to the partner on success or ERR_PTR on failure. */ struct typec_partner *typec_register_partner(struct typec_port *port, struct typec_partner_desc *desc) @@ -519,7 +519,7 @@ struct typec_partner *typec_register_partner(struct typec_port *port, partner = kzalloc(sizeof(*partner), GFP_KERNEL); if (!partner) - return NULL; + return ERR_PTR(-ENOMEM); partner->usb_pd = desc->usb_pd; partner->accessory = desc->accessory; @@ -542,7 +542,7 @@ struct typec_partner *typec_register_partner(struct typec_port *port, if (ret) { dev_err(&port->dev, "failed to register partner (%d)\n", ret); put_device(&partner->dev); - return NULL; + return ERR_PTR(ret); } return partner; @@ -557,7 +557,7 @@ EXPORT_SYMBOL_GPL(typec_register_partner); */ void typec_unregister_partner(struct typec_partner *partner) { - if (partner) + if (!IS_ERR_OR_NULL(partner)) device_unregister(&partner->dev); } EXPORT_SYMBOL_GPL(typec_unregister_partner); @@ -587,7 +587,7 @@ static const struct device_type typec_plug_dev_type = { * the plug lists in response to Discover Modes command need to be listed in an * array in @desc. * - * Returns handle to the alternate mode on success or NULL on failure. + * Returns handle to the alternate mode on success or ERR_PTR on failure. */ struct typec_altmode * typec_plug_register_altmode(struct typec_plug *plug, @@ -606,7 +606,7 @@ EXPORT_SYMBOL_GPL(typec_plug_register_altmode); * Cable Plug represents a plug with electronics in it that can response to USB * Power Delivery SOP Prime or SOP Double Prime packages. * - * Returns handle to the cable plug on success or NULL on failure. + * Returns handle to the cable plug on success or ERR_PTR on failure. */ struct typec_plug *typec_register_plug(struct typec_cable *cable, struct typec_plug_desc *desc) @@ -617,7 +617,7 @@ struct typec_plug *typec_register_plug(struct typec_cable *cable, plug = kzalloc(sizeof(*plug), GFP_KERNEL); if (!plug) - return NULL; + return ERR_PTR(-ENOMEM); sprintf(name, "plug%d", desc->index); @@ -631,7 +631,7 @@ struct typec_plug *typec_register_plug(struct typec_cable *cable, if (ret) { dev_err(&cable->dev, "failed to register plug (%d)\n", ret); put_device(&plug->dev); - return NULL; + return ERR_PTR(ret); } return plug; @@ -646,7 +646,7 @@ EXPORT_SYMBOL_GPL(typec_register_plug); */ void typec_unregister_plug(struct typec_plug *plug) { - if (plug) + if (!IS_ERR_OR_NULL(plug)) device_unregister(&plug->dev); } EXPORT_SYMBOL_GPL(typec_unregister_plug); @@ -724,7 +724,7 @@ EXPORT_SYMBOL_GPL(typec_cable_set_identity); * Registers a device for USB Type-C Cable described in @desc. The cable will be * parent for the optional cable plug devises. * - * Returns handle to the cable on success or NULL on failure. + * Returns handle to the cable on success or ERR_PTR on failure. */ struct typec_cable *typec_register_cable(struct typec_port *port, struct typec_cable_desc *desc) @@ -734,7 +734,7 @@ struct typec_cable *typec_register_cable(struct typec_port *port, cable = kzalloc(sizeof(*cable), GFP_KERNEL); if (!cable) - return NULL; + return ERR_PTR(-ENOMEM); cable->type = desc->type; cable->active = desc->active; @@ -757,7 +757,7 @@ struct typec_cable *typec_register_cable(struct typec_port *port, if (ret) { dev_err(&port->dev, "failed to register cable (%d)\n", ret); put_device(&cable->dev); - return NULL; + return ERR_PTR(ret); } return cable; @@ -772,7 +772,7 @@ EXPORT_SYMBOL_GPL(typec_register_cable); */ void typec_unregister_cable(struct typec_cable *cable) { - if (cable) + if (!IS_ERR_OR_NULL(cable)) device_unregister(&cable->dev); } EXPORT_SYMBOL_GPL(typec_unregister_cable); @@ -1256,7 +1256,7 @@ EXPORT_SYMBOL_GPL(typec_set_pwr_opmode); * This routine is used to register an alternate mode that @port is capable of * supporting. * - * Returns handle to the alternate mode on success or NULL on failure. + * Returns handle to the alternate mode on success or ERR_PTR on failure. */ struct typec_altmode * typec_port_register_altmode(struct typec_port *port, @@ -1273,7 +1273,7 @@ EXPORT_SYMBOL_GPL(typec_port_register_altmode); * * Registers a device for USB Type-C Port described in @cap. * - * Returns handle to the port on success or NULL on failure. + * Returns handle to the port on success or ERR_PTR on failure. */ struct typec_port *typec_register_port(struct device *parent, const struct typec_capability *cap) @@ -1285,12 +1285,12 @@ struct typec_port *typec_register_port(struct device *parent, port = kzalloc(sizeof(*port), GFP_KERNEL); if (!port) - return NULL; + return ERR_PTR(-ENOMEM); id = ida_simple_get(&typec_index_ida, 0, 0, GFP_KERNEL); if (id < 0) { kfree(port); - return NULL; + return ERR_PTR(id); } if (cap->type == TYPEC_PORT_DFP) @@ -1326,7 +1326,7 @@ struct typec_port *typec_register_port(struct device *parent, if (ret) { dev_err(parent, "failed to register port (%d)\n", ret); put_device(&port->dev); - return NULL; + return ERR_PTR(ret); } return port; @@ -1341,7 +1341,7 @@ EXPORT_SYMBOL_GPL(typec_register_port); */ void typec_unregister_port(struct typec_port *port) { - if (port) + if (!IS_ERR_OR_NULL(port)) device_unregister(&port->dev); } EXPORT_SYMBOL_GPL(typec_unregister_port); diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 79046fe6642680c17a317c9d1855aabc8404f76b..69d544cfcd45a5a2ce77ada3ff428b2663657a89 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -260,38 +260,45 @@ static void ucsi_pwr_opmode_change(struct ucsi_connector *con) static int ucsi_register_partner(struct ucsi_connector *con) { - struct typec_partner_desc partner; + struct typec_partner_desc desc; + struct typec_partner *partner; if (con->partner) return 0; - memset(&partner, 0, sizeof(partner)); + memset(&desc, 0, sizeof(desc)); switch (con->status.partner_type) { case UCSI_CONSTAT_PARTNER_TYPE_DEBUG: - partner.accessory = TYPEC_ACCESSORY_DEBUG; + desc.accessory = TYPEC_ACCESSORY_DEBUG; break; case UCSI_CONSTAT_PARTNER_TYPE_AUDIO: - partner.accessory = TYPEC_ACCESSORY_AUDIO; + desc.accessory = TYPEC_ACCESSORY_AUDIO; break; default: break; } - partner.usb_pd = con->status.pwr_op_mode == UCSI_CONSTAT_PWR_OPMODE_PD; + desc.usb_pd = con->status.pwr_op_mode == UCSI_CONSTAT_PWR_OPMODE_PD; - con->partner = typec_register_partner(con->port, &partner); - if (!con->partner) { - dev_err(con->ucsi->dev, "con%d: failed to register partner\n", - con->num); - return -ENODEV; + partner = typec_register_partner(con->port, &desc); + if (IS_ERR(partner)) { + dev_err(con->ucsi->dev, + "con%d: failed to register partner (%ld)\n", con->num, + PTR_ERR(partner)); + return PTR_ERR(partner); } + con->partner = partner; + return 0; } static void ucsi_unregister_partner(struct ucsi_connector *con) { + if (!con->partner) + return; + typec_unregister_partner(con->partner); con->partner = NULL; } @@ -606,8 +613,8 @@ static int ucsi_register_port(struct ucsi *ucsi, int index) /* Register the connector */ con->port = typec_register_port(ucsi->dev, cap); - if (!con->port) - return -ENODEV; + if (IS_ERR(con->port)) + return PTR_ERR(con->port); /* Get the status */ UCSI_CMD_GET_CONNECTOR_STATUS(ctrl, con->num);