target: remove obvious warnings
Get rid of a bunch of write-only variables. In a number of cases I
suspect actual bugs to be present, so I left all of those for a second
look.
(nab: fix lio-core patch fuzz)
Signed-off-by: Joern Engel <joern@logfs.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index d3b54ec..b8fbc29 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -1469,14 +1469,12 @@
unsigned char *ping_data = NULL;
int cmdsn_ret, niov = 0, ret = 0, rx_got, rx_size;
u32 checksum, data_crc, padding = 0, payload_length;
- u64 lun;
struct iscsi_cmd *cmd = NULL;
struct kvec *iov = NULL;
struct iscsi_nopout *hdr;
hdr = (struct iscsi_nopout *) buf;
payload_length = ntoh24(hdr->dlength);
- lun = get_unaligned_le64(&hdr->lun);
hdr->itt = be32_to_cpu(hdr->itt);
hdr->ttt = be32_to_cpu(hdr->ttt);
hdr->cmdsn = be32_to_cpu(hdr->cmdsn);
@@ -1686,13 +1684,11 @@
struct se_tmr_req *se_tmr;
struct iscsi_tmr_req *tmr_req;
struct iscsi_tm *hdr;
- u32 payload_length;
int out_of_order_cmdsn = 0;
int ret;
u8 function;
hdr = (struct iscsi_tm *) buf;
- payload_length = ntoh24(hdr->dlength);
hdr->itt = be32_to_cpu(hdr->itt);
hdr->rtt = be32_to_cpu(hdr->rtt);
hdr->cmdsn = be32_to_cpu(hdr->cmdsn);
@@ -2204,14 +2200,10 @@
struct iscsi_conn *conn,
unsigned char *buf)
{
- u32 unpacked_lun;
- u64 lun;
struct iscsi_snack *hdr;
hdr = (struct iscsi_snack *) buf;
hdr->flags &= ~ISCSI_FLAG_CMD_FINAL;
- lun = get_unaligned_le64(&hdr->lun);
- unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
hdr->itt = be32_to_cpu(hdr->itt);
hdr->ttt = be32_to_cpu(hdr->ttt);
hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn);
@@ -3511,7 +3503,6 @@
struct iscsi_cmd *cmd = NULL;
struct iscsi_conn *conn;
struct iscsi_queue_req *qr = NULL;
- struct se_cmd *se_cmd;
struct iscsi_thread_set *ts = arg;
/*
* Allow ourselves to be interrupted by SIGINT so that a
@@ -3694,8 +3685,6 @@
goto transport_err;
}
- se_cmd = &cmd->se_cmd;
-
if (map_sg && !conn->conn_ops->IFMarker) {
if (iscsit_fe_sendpage_sg(cmd, conn) < 0) {
conn->tx_response_queue = 0;
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index 18cffff..1046b62 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -882,7 +882,7 @@
static int __iscsi_target_login_thread(struct iscsi_np *np)
{
u8 buffer[ISCSI_HDR_LEN], iscsi_opcode, zero_tsih = 0;
- int err, ret = 0, ip_proto, sock_type, set_sctp_conn_flag, stop;
+ int err, ret = 0, set_sctp_conn_flag, stop;
struct iscsi_conn *conn = NULL;
struct iscsi_login *login;
struct iscsi_portal_group *tpg = NULL;
@@ -895,8 +895,6 @@
flush_signals(current);
set_sctp_conn_flag = 0;
sock = np->np_socket;
- ip_proto = np->np_ip_proto;
- sock_type = np->np_sock_type;
spin_lock_bh(&np->np_thread_lock);
if (np->np_thread_state == ISCSI_NP_THREAD_RESET) {
diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c
index 37a20ba..2dba448 100644
--- a/drivers/target/iscsi/iscsi_target_nego.c
+++ b/drivers/target/iscsi/iscsi_target_nego.c
@@ -173,13 +173,11 @@
struct iscsi_conn *conn,
struct iscsi_login *login)
{
- int req_csg, req_nsg, rsp_csg, rsp_nsg;
+ int req_csg, req_nsg;
u32 payload_length;
struct iscsi_login_req *login_req;
- struct iscsi_login_rsp *login_rsp;
login_req = (struct iscsi_login_req *) login->req;
- login_rsp = (struct iscsi_login_rsp *) login->rsp;
payload_length = ntoh24(login_req->dlength);
switch (login_req->opcode & ISCSI_OPCODE_MASK) {
@@ -203,9 +201,7 @@
}
req_csg = (login_req->flags & ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK) >> 2;
- rsp_csg = (login_rsp->flags & ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK) >> 2;
req_nsg = (login_req->flags & ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK);
- rsp_nsg = (login_rsp->flags & ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK);
if (req_csg != login->current_stage) {
pr_err("Initiator unexpectedly changed login stage"
@@ -753,12 +749,10 @@
struct iscsi_session *sess = conn->sess;
struct iscsi_tiqn *tiqn;
struct iscsi_login_req *login_req;
- struct iscsi_targ_login_rsp *login_rsp;
u32 payload_length;
int sessiontype = 0, ret = 0;
login_req = (struct iscsi_login_req *) login->req;
- login_rsp = (struct iscsi_targ_login_rsp *) login->rsp;
payload_length = ntoh24(login_req->dlength);
login->first_request = 1;
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index 026dffa..22f4fe7 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -1312,7 +1312,6 @@
static int tcm_loop_register_configfs(void)
{
struct target_fabric_configfs *fabric;
- struct config_group *tf_cg;
int ret;
/*
* Set the TCM Loop HBA counter to zero
@@ -1379,7 +1378,6 @@
fabric->tf_ops.set_fabric_sense_len = &tcm_loop_set_fabric_sense_len;
fabric->tf_ops.get_fabric_sense_len = &tcm_loop_get_fabric_sense_len;
- tf_cg = &fabric->tf_group;
/*
* Setup function pointers for generic logic in target_core_fabric_configfs.c
*/
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 72bd7f5..cbb6653 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -2853,7 +2853,6 @@
struct se_subsystem_dev *se_dev = container_of(to_config_group(item),
struct se_subsystem_dev, se_dev_group);
struct se_hba *hba;
- struct se_subsystem_api *t;
struct config_item *df_item;
struct config_group *dev_cg, *tg_pt_gp_cg, *dev_stat_grp;
int i;
@@ -2861,7 +2860,6 @@
hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item);
mutex_lock(&hba->hba_access_mutex);
- t = hba->transport;
dev_stat_grp = &se_dev->dev_stat_grps.stat_group;
for (i = 0; dev_stat_grp->default_groups[i]; i++) {
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 3be7279..aa62677 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -647,7 +647,6 @@
{
struct se_cmd *se_cmd = se_task->task_se_cmd;
struct se_dev_entry *deve;
- struct se_lun *se_lun;
struct se_session *se_sess = se_cmd->se_sess;
unsigned char *buf;
u32 lun_count = 0, offset = 8, i;
@@ -672,7 +671,6 @@
deve = se_sess->se_node_acl->device_list[i];
if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS))
continue;
- se_lun = deve->se_lun;
/*
* We determine the correct LUN LIST LENGTH even once we
* have reached the initial allocation length.
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
index de3e4f2..5926b17 100644
--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -2416,9 +2416,7 @@
u64 res_key)
{
struct se_session *se_sess = cmd->se_sess;
- struct se_dev_entry *se_deve;
struct se_lun *se_lun = cmd->se_lun;
- struct se_portal_group *se_tpg;
struct t10_pr_registration *pr_reg, *pr_res_holder;
struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
char i_buf[PR_REG_ISID_ID_LEN];
@@ -2431,8 +2429,6 @@
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return -EINVAL;
}
- se_tpg = se_sess->se_tpg;
- se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
/*
* Locate the existing *pr_reg via struct se_node_acl pointers
*/
@@ -2990,7 +2986,6 @@
int abort)
{
struct se_device *dev = cmd->se_dev;
- struct se_dev_entry *se_deve;
struct se_node_acl *pr_reg_nacl;
struct se_session *se_sess = cmd->se_sess;
LIST_HEAD(preempt_and_abort_list);
@@ -3005,7 +3000,6 @@
return -EINVAL;
}
- se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
pr_reg_n = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl,
se_sess);
if (!pr_reg_n) {
@@ -3341,7 +3335,7 @@
{
struct se_session *se_sess = cmd->se_sess;
struct se_device *dev = cmd->se_dev;
- struct se_dev_entry *se_deve, *dest_se_deve = NULL;
+ struct se_dev_entry *dest_se_deve = NULL;
struct se_lun *se_lun = cmd->se_lun;
struct se_node_acl *pr_res_nacl, *pr_reg_nacl, *dest_node_acl = NULL;
struct se_port *se_port;
@@ -3366,7 +3360,6 @@
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
se_tpg = se_sess->se_tpg;
tf_ops = se_tpg->se_tpg_tfo;
- se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
/*
* Follow logic from spc4r17 Section 5.7.8, Table 50 --
* Register behaviors for a REGISTER AND MOVE service action
diff --git a/drivers/target/target_core_stat.c b/drivers/target/target_core_stat.c
index 7ce1bfa..3d44beb 100644
--- a/drivers/target/target_core_stat.c
+++ b/drivers/target/target_core_stat.c
@@ -954,7 +954,6 @@
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
- struct se_portal_group *tpg;
ssize_t ret;
spin_lock(&lun->lun_sep_lock);
@@ -963,7 +962,6 @@
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
- tpg = sep->sep_tpg;
ret = snprintf(page, PAGE_SIZE, "%llu\n", sep->sep_stats.cmd_pdus);
spin_unlock(&lun->lun_sep_lock);
@@ -976,7 +974,6 @@
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
- struct se_portal_group *tpg;
ssize_t ret;
spin_lock(&lun->lun_sep_lock);
@@ -985,7 +982,6 @@
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
- tpg = sep->sep_tpg;
ret = snprintf(page, PAGE_SIZE, "%u\n",
(u32)(sep->sep_stats.rx_data_octets >> 20));
@@ -999,7 +995,6 @@
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
- struct se_portal_group *tpg;
ssize_t ret;
spin_lock(&lun->lun_sep_lock);
@@ -1008,7 +1003,6 @@
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
- tpg = sep->sep_tpg;
ret = snprintf(page, PAGE_SIZE, "%u\n",
(u32)(sep->sep_stats.tx_data_octets >> 20));
@@ -1022,7 +1016,6 @@
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_port *sep;
- struct se_portal_group *tpg;
ssize_t ret;
spin_lock(&lun->lun_sep_lock);
@@ -1031,7 +1024,6 @@
spin_unlock(&lun->lun_sep_lock);
return -ENODEV;
}
- tpg = sep->sep_tpg;
/* FIXME: scsiTgtPortHsInCommands */
ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
@@ -1275,7 +1267,6 @@
struct se_node_acl *nacl = lacl->se_lun_nacl;
struct se_dev_entry *deve;
struct se_lun *lun;
- struct se_portal_group *tpg;
ssize_t ret;
spin_lock_irq(&nacl->device_list_lock);
@@ -1284,7 +1275,6 @@
spin_unlock_irq(&nacl->device_list_lock);
return -ENODEV;
}
- tpg = nacl->se_tpg;
lun = deve->se_lun;
/* scsiDeviceIndex */
ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_se_dev->dev_index);
@@ -1643,7 +1633,6 @@
struct se_node_acl *nacl = lacl->se_lun_nacl;
struct se_dev_entry *deve;
struct se_lun *lun;
- struct se_portal_group *tpg;
ssize_t ret;
spin_lock_irq(&nacl->device_list_lock);
@@ -1652,7 +1641,6 @@
spin_unlock_irq(&nacl->device_list_lock);
return -ENODEV;
}
- tpg = nacl->se_tpg;
lun = deve->se_lun;
/* scsiDeviceIndex */
ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_se_dev->dev_index);
diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index c0fecde..70c3ffb 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -359,7 +359,7 @@
void core_tpg_clear_object_luns(struct se_portal_group *tpg)
{
- int i, ret;
+ int i;
struct se_lun *lun;
spin_lock(&tpg->tpg_lun_lock);
@@ -371,7 +371,7 @@
continue;
spin_unlock(&tpg->tpg_lun_lock);
- ret = core_dev_del_lun(tpg, lun->unpacked_lun);
+ core_dev_del_lun(tpg, lun->unpacked_lun);
spin_lock(&tpg->tpg_lun_lock);
}
spin_unlock(&tpg->tpg_lun_lock);
@@ -483,12 +483,11 @@
LIST_HEAD(sess_list);
struct se_session *sess, *sess_tmp;
unsigned long flags;
- int dynamic_acl = 0, rc;
+ int rc;
spin_lock_irq(&tpg->acl_node_lock);
if (acl->dynamic_node_acl) {
acl->dynamic_node_acl = 0;
- dynamic_acl = 1;
}
list_del(&acl->acl_list);
tpg->num_node_acls--;
diff --git a/drivers/target/tcm_fc/tfc_sess.c b/drivers/target/tcm_fc/tfc_sess.c
index a1d1f3c..b30f92b 100644
--- a/drivers/target/tcm_fc/tfc_sess.c
+++ b/drivers/target/tcm_fc/tfc_sess.c
@@ -319,11 +319,9 @@
void ft_sess_close(struct se_session *se_sess)
{
struct ft_sess *sess = se_sess->fabric_sess_ptr;
- struct fc_lport *lport;
u32 port_id;
mutex_lock(&ft_lport_lock);
- lport = sess->tport->lport;
port_id = sess->port_id;
if (port_id == -1) {
mutex_unlock(&ft_lport_lock);