From: Wei Yongjun <[email protected]> The dereference should be moved below the NULL test.
spatch with a semantic match is used to found this. (http://coccinelle.lip6.fr/) Signed-off-by: Wei Yongjun <[email protected]> --- drivers/target/target_core_pr.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index 1e94650..7e2e9be 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -197,10 +197,10 @@ int target_scsi2_reservation_release(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; struct se_session *sess = cmd->se_sess; - struct se_portal_group *tpg = sess->se_tpg; + struct se_portal_group *tpg; int ret = 0, rc; - if (!sess || !tpg) + if (!sess || !sess->se_tpg) goto out; rc = target_check_scsi2_reservation_conflict(cmd); if (rc == 1) @@ -228,6 +228,7 @@ int target_scsi2_reservation_release(struct se_cmd *cmd) dev->dev_res_bin_isid = 0; dev->dev_flags &= ~DF_SPC2_RESERVATIONS_WITH_ISID; } + tpg = sess->se_tpg; pr_debug("SCSI-2 Released reservation for %s LUN: %u ->" " MAPPED LUN: %u for %s\n", tpg->se_tpg_tfo->get_fabric_name(), cmd->se_lun->unpacked_lun, cmd->se_deve->mapped_lun, @@ -245,7 +246,7 @@ int target_scsi2_reservation_reserve(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; struct se_session *sess = cmd->se_sess; - struct se_portal_group *tpg = sess->se_tpg; + struct se_portal_group *tpg; int ret = 0, rc; if ((cmd->t_task_cdb[1] & 0x01) && @@ -260,7 +261,7 @@ int target_scsi2_reservation_reserve(struct se_cmd *cmd) * This is currently the case for target_core_mod passthrough struct se_cmd * ops */ - if (!sess || !tpg) + if (!sess || !sess->se_tpg) goto out; rc = target_check_scsi2_reservation_conflict(cmd); if (rc == 1) @@ -272,6 +273,7 @@ int target_scsi2_reservation_reserve(struct se_cmd *cmd) } ret = 0; + tpg = sess->se_tpg; spin_lock(&dev->dev_reservation_lock); if (dev->dev_reserved_node_acl && (dev->dev_reserved_node_acl != sess->se_node_acl)) { -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
