Linux 3.2.82

[pandora-kernel.git] / drivers / target / target_core_pscsi.c

diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index ed32e1e..1fb9e58 100644 (file)
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -129,10 +129,10 @@ static int pscsi_pmode_enable_hba(struct se_hba *hba, unsigned long mode_flag)
         * pSCSI Host ID and enable for phba mode
         */
        sh = scsi_host_lookup(phv->phv_host_id);
-       if (IS_ERR(sh)) {
+       if (!sh) {
                pr_err("pSCSI: Unable to locate SCSI Host for"
                        " phv_host_id: %d\n", phv->phv_host_id);
-               return PTR_ERR(sh);
+               return -EINVAL;
        }
 
        phv->phv_lld_host = sh;
@@ -564,11 +564,12 @@ static struct se_device *pscsi_create_virtdevice(
                        sh = phv->phv_lld_host;
                } else {
                        sh = scsi_host_lookup(pdv->pdv_host_id);
-                       if (IS_ERR(sh)) {
+                       if (!sh) {
                                pr_err("pSCSI: Unable to locate"
                                        " pdv_host_id: %d\n", pdv->pdv_host_id);
-                               return ERR_CAST(sh);
+                               return ERR_PTR(-EINVAL);
                        }
+                       pdv->pdv_lld_host = sh;
                }
        } else {
                if (phv->phv_mode == PHV_VIRUTAL_HOST_ID) {
@@ -655,6 +656,8 @@ static void pscsi_free_device(void *p)
                if ((phv->phv_mode == PHV_LLD_SCSI_HOST_NO) &&
                    (phv->phv_lld_host != NULL))
                        scsi_host_put(phv->phv_lld_host);
+               else if (pdv->pdv_lld_host)
+                       scsi_host_put(pdv->pdv_lld_host);
 
                if ((sd->type == TYPE_DISK) || (sd->type == TYPE_ROM))
                        scsi_device_put(sd);
@@ -695,7 +698,7 @@ static int pscsi_transport_complete(struct se_task *task)
 
                if (task->task_se_cmd->se_deve->lun_flags &
                                TRANSPORT_LUNFLAGS_READ_ONLY) {
-                       unsigned char *buf = transport_kmap_first_data_page(task->task_se_cmd);
+                       unsigned char *buf = transport_kmap_data_sg(task->task_se_cmd);
 
                        if (cdb[0] == MODE_SENSE_10) {
                                if (!(buf[3] & 0x80))
@@ -705,7 +708,7 @@ static int pscsi_transport_complete(struct se_task *task)
                                        buf[2] |= 0x80;
                        }
 
-                       transport_kunmap_first_data_page(task->task_se_cmd);
+                       transport_kunmap_data_sg(task->task_se_cmd);
                }
        }
 after_mode_sense:
@@ -963,6 +966,7 @@ static inline struct bio *pscsi_get_bio(int sg_num)
 static int pscsi_map_sg(struct se_task *task, struct scatterlist *task_sg,
                struct bio **hbio)
 {
+       struct se_cmd *cmd = task->task_se_cmd;
        struct pscsi_dev_virt *pdv = task->task_se_cmd->se_dev->dev_ptr;
        u32 task_sg_num = task->task_sg_nents;
        struct bio *bio = NULL, *tbio = NULL;
@@ -971,7 +975,7 @@ static int pscsi_map_sg(struct se_task *task, struct scatterlist *task_sg,
        u32 data_len = task->task_size, i, len, bytes, off;
        int nr_pages = (task->task_size + task_sg[0].offset +
                        PAGE_SIZE - 1) >> PAGE_SHIFT;
-       int nr_vecs = 0, rc, ret = PYX_TRANSPORT_OUT_OF_MEMORY_RESOURCES;
+       int nr_vecs = 0, rc;
        int rw = (task->task_data_direction == DMA_TO_DEVICE);
 
        *hbio = NULL;
@@ -1058,11 +1062,13 @@ fail:
                bio->bi_next = NULL;
                bio_endio(bio, 0);      /* XXX: should be error */
        }
-       return ret;
+       cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+       return -ENOMEM;
 }
 
 static int pscsi_do_task(struct se_task *task)
 {
+       struct se_cmd *cmd = task->task_se_cmd;
        struct pscsi_dev_virt *pdv = task->task_se_cmd->se_dev->dev_ptr;
        struct pscsi_plugin_task *pt = PSCSI_TASK(task);
        struct request *req;
@@ -1078,7 +1084,9 @@ static int pscsi_do_task(struct se_task *task)
                if (!req || IS_ERR(req)) {
                        pr_err("PSCSI: blk_get_request() failed: %ld\n",
                                        req ? IS_ERR(req) : -ENOMEM);
-                       return PYX_TRANSPORT_LU_COMM_FAILURE;
+                       cmd->scsi_sense_reason =
+                               TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+                       return -ENODEV;
                }
        } else {
                BUG_ON(!task->task_size);
@@ -1087,8 +1095,11 @@ static int pscsi_do_task(struct se_task *task)
                 * Setup the main struct request for the task->task_sg[] payload
                 */
                ret = pscsi_map_sg(task, task->task_sg, &hbio);
-               if (ret < 0)
-                       return PYX_TRANSPORT_LU_COMM_FAILURE;
+               if (ret < 0) {
+                       cmd->scsi_sense_reason =
+                               TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+                       return ret;
+               }
 
                req = blk_make_request(pdv->pdv_sd->request_queue, hbio,
                                       GFP_KERNEL);
@@ -1115,7 +1126,7 @@ static int pscsi_do_task(struct se_task *task)
                        (task->task_se_cmd->sam_task_attr == MSG_HEAD_TAG),
                        pscsi_req_done);
 
-       return PYX_TRANSPORT_SENT_TO_TRANSPORT;
+       return 0;
 
 fail:
        while (hbio) {
@@ -1124,7 +1135,8 @@ fail:
                bio->bi_next = NULL;
                bio_endio(bio, 0);      /* XXX: should be error */
        }
-       return PYX_TRANSPORT_OUT_OF_MEMORY_RESOURCES;
+       cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+       return -ENOMEM;
 }
 
 /*     pscsi_get_sense_buffer():
@@ -1159,7 +1171,7 @@ static u32 pscsi_get_device_type(struct se_device *dev)
        struct pscsi_dev_virt *pdv = dev->dev_ptr;
        struct scsi_device *sd = pdv->pdv_sd;
 
-       return sd->type;
+       return (sd) ? sd->type : TYPE_NO_LUN;
 }
 
 static sector_t pscsi_get_blocks(struct se_device *dev)
@@ -1198,9 +1210,8 @@ static inline void pscsi_process_SAM_status(
                        " 0x%02x Result: 0x%08x\n", task, pt->pscsi_cdb[0],
                        pt->pscsi_result);
                task->task_scsi_status = SAM_STAT_CHECK_CONDITION;
-               task->task_error_status = PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
-               task->task_se_cmd->transport_error_status =
-                                       PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
+               task->task_se_cmd->scsi_sense_reason =
+                                       TCM_UNSUPPORTED_SCSI_OPCODE;
                transport_complete_task(task, 0);
                break;
        }