[SCSI] ibmvscsi: convert the ibmvscsi driver to use include/scsi/srp.h

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 125 insertions, 122 deletions

diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index a279d0a8dff5..0a8ad37ae899 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -168,7 +168,7 @@ static void release_event_pool(struct event_pool *pool,
                         ++in_use;
                 if (pool->events[i].ext_list) {
                         dma_free_coherent(hostdata->dev,
-                                  SG_ALL * sizeof(struct memory_descriptor),
+                                  SG_ALL * sizeof(struct srp_direct_buf),
                                   pool->events[i].ext_list,
                                   pool->events[i].ext_list_token);
                 }
@@ -284,40 +284,37 @@ static void set_srp_direction(struct scsi_cmnd *cmd,
                               struct srp_cmd *srp_cmd, 
                               int numbuf)
 {
+        u8 fmt;
+
         if (numbuf == 0)
                 return;
         
-        if (numbuf == 1) {
+        if (numbuf == 1)
+                fmt = SRP_DATA_DESC_DIRECT;
+        else {
+                fmt = SRP_DATA_DESC_INDIRECT;
+                numbuf = min(numbuf, MAX_INDIRECT_BUFS);
+
                 if (cmd->sc_data_direction == DMA_TO_DEVICE)
-                        srp_cmd->data_out_format = SRP_DIRECT_BUFFER;
-                else 
-                        srp_cmd->data_in_format = SRP_DIRECT_BUFFER;
-        } else {
-                if (cmd->sc_data_direction == DMA_TO_DEVICE) {
-                        srp_cmd->data_out_format = SRP_INDIRECT_BUFFER;
-                        srp_cmd->data_out_count =
-                                numbuf < MAX_INDIRECT_BUFS ?
-                                        numbuf: MAX_INDIRECT_BUFS;
-                } else {
-                        srp_cmd->data_in_format = SRP_INDIRECT_BUFFER;
-                        srp_cmd->data_in_count =
-                                numbuf < MAX_INDIRECT_BUFS ?
-                                        numbuf: MAX_INDIRECT_BUFS;
-                }
+                        srp_cmd->data_out_desc_cnt = numbuf;
+                else
+                        srp_cmd->data_in_desc_cnt = numbuf;
         }
+
+        if (cmd->sc_data_direction == DMA_TO_DEVICE)
+                srp_cmd->buf_fmt = fmt << 4;
+        else
+                srp_cmd->buf_fmt = fmt;
 }
 
-static void unmap_sg_list(int num_entries, 
+static void unmap_sg_list(int num_entries,
                 struct device *dev,
-                struct memory_descriptor *md)
-{ 
+                struct srp_direct_buf *md)
+{
         int i;
 
-        for (i = 0; i < num_entries; ++i) {
-                dma_unmap_single(dev,
-                        md[i].virtual_address,
-                        md[i].length, DMA_BIDIRECTIONAL);
-        }
+        for (i = 0; i < num_entries; ++i)
+                dma_unmap_single(dev, md[i].va, md[i].len, DMA_BIDIRECTIONAL);
 }
 
 /**
@@ -330,23 +327,26 @@ static void unmap_cmd_data(struct srp_cmd *cmd,
                            struct srp_event_struct *evt_struct,
                            struct device *dev)
 {
-        if ((cmd->data_out_format == SRP_NO_BUFFER) &&
-            (cmd->data_in_format == SRP_NO_BUFFER))
+        u8 out_fmt, in_fmt;
+
+        out_fmt = cmd->buf_fmt >> 4;
+        in_fmt = cmd->buf_fmt & ((1U << 4) - 1);
+
+        if (out_fmt == SRP_NO_DATA_DESC && in_fmt == SRP_NO_DATA_DESC)
                 return;
-        else if ((cmd->data_out_format == SRP_DIRECT_BUFFER) ||
-                 (cmd->data_in_format == SRP_DIRECT_BUFFER)) {
-                struct memory_descriptor *data =
-                        (struct memory_descriptor *)cmd->additional_data;
-                dma_unmap_single(dev, data->virtual_address, data->length,
-                                 DMA_BIDIRECTIONAL);
+        else if (out_fmt == SRP_DATA_DESC_DIRECT ||
+                 in_fmt == SRP_DATA_DESC_DIRECT) {
+                struct srp_direct_buf *data =
+                        (struct srp_direct_buf *) cmd->add_data;
+                dma_unmap_single(dev, data->va, data->len, DMA_BIDIRECTIONAL);
         } else {
-                struct indirect_descriptor *indirect =
-                        (struct indirect_descriptor *)cmd->additional_data;
-                int num_mapped = indirect->head.length / 
-                        sizeof(indirect->list[0]);
+                struct srp_indirect_buf *indirect =
+                        (struct srp_indirect_buf *) cmd->add_data;
+                int num_mapped = indirect->table_desc.len /
+                        sizeof(struct srp_direct_buf);
 
                 if (num_mapped <= MAX_INDIRECT_BUFS) {
-                        unmap_sg_list(num_mapped, dev, &indirect->list[0]);
+                        unmap_sg_list(num_mapped, dev, &indirect->desc_list[0]);
                         return;
                 }
 
@@ -356,17 +356,17 @@ static void unmap_cmd_data(struct srp_cmd *cmd,
 
 static int map_sg_list(int num_entries, 
                        struct scatterlist *sg,
-                       struct memory_descriptor *md)
+                       struct srp_direct_buf *md)
 {
         int i;
         u64 total_length = 0;
 
         for (i = 0; i < num_entries; ++i) {
-                struct memory_descriptor *descr = md + i;
+                struct srp_direct_buf *descr = md + i;
                 struct scatterlist *sg_entry = &sg[i];
-                descr->virtual_address = sg_dma_address(sg_entry);
-                descr->length = sg_dma_len(sg_entry);
-                descr->memory_handle = 0;
+                descr->va = sg_dma_address(sg_entry);
+                descr->len = sg_dma_len(sg_entry);
+                descr->key = 0;
                 total_length += sg_dma_len(sg_entry);
         }
         return total_length;
@@ -389,10 +389,10 @@ static int map_sg_data(struct scsi_cmnd *cmd,
         int sg_mapped;
         u64 total_length = 0;
         struct scatterlist *sg = cmd->request_buffer;
-        struct memory_descriptor *data =
-            (struct memory_descriptor *)srp_cmd->additional_data;
-        struct indirect_descriptor *indirect =
-            (struct indirect_descriptor *)data;
+        struct srp_direct_buf *data =
+                (struct srp_direct_buf *) srp_cmd->add_data;
+        struct srp_indirect_buf *indirect =
+                (struct srp_indirect_buf *) data;
 
         sg_mapped = dma_map_sg(dev, sg, cmd->use_sg, DMA_BIDIRECTIONAL);
 
@@ -403,9 +403,9 @@ static int map_sg_data(struct scsi_cmnd *cmd,
 
         /* special case; we can use a single direct descriptor */
         if (sg_mapped == 1) {
-                data->virtual_address = sg_dma_address(&sg[0]);
-                data->length = sg_dma_len(&sg[0]);
-                data->memory_handle = 0;
+                data->va = sg_dma_address(&sg[0]);
+                data->len = sg_dma_len(&sg[0]);
+                data->key = 0;
                 return 1;
         }
 
@@ -416,25 +416,26 @@ static int map_sg_data(struct scsi_cmnd *cmd,
                 return 0;
         }
 
-        indirect->head.virtual_address = 0;
-        indirect->head.length = sg_mapped * sizeof(indirect->list[0]);
-        indirect->head.memory_handle = 0;
+        indirect->table_desc.va = 0;
+        indirect->table_desc.len = sg_mapped * sizeof(struct srp_direct_buf);
+        indirect->table_desc.key = 0;
 
         if (sg_mapped <= MAX_INDIRECT_BUFS) {
-                total_length = map_sg_list(sg_mapped, sg, &indirect->list[0]);
-                indirect->total_length = total_length;
+                total_length = map_sg_list(sg_mapped, sg,
+                                           &indirect->desc_list[0]);
+                indirect->len = total_length;
                 return 1;
         }
 
         /* get indirect table */
         if (!evt_struct->ext_list) {
-                evt_struct->ext_list =(struct memory_descriptor*)
+                evt_struct->ext_list = (struct srp_direct_buf *)
                         dma_alloc_coherent(dev, 
-                                SG_ALL * sizeof(struct memory_descriptor),
-                                &evt_struct->ext_list_token, 0);
+                                           SG_ALL * sizeof(struct srp_direct_buf),
+                                           &evt_struct->ext_list_token, 0);
                 if (!evt_struct->ext_list) {
-                    printk(KERN_ERR
-                        "ibmvscsi: Can't allocate memory for indirect table\n");
+                        printk(KERN_ERR
+                               "ibmvscsi: Can't allocate memory for indirect table\n");
                         return 0;
                         
                 }
@@ -442,11 +443,11 @@ static int map_sg_data(struct scsi_cmnd *cmd,
 
         total_length = map_sg_list(sg_mapped, sg, evt_struct->ext_list);        
 
-        indirect->total_length = total_length;
-        indirect->head.virtual_address = evt_struct->ext_list_token;
-        indirect->head.length = sg_mapped * sizeof(indirect->list[0]);
-        memcpy(indirect->list, evt_struct->ext_list,
-                MAX_INDIRECT_BUFS * sizeof(struct memory_descriptor));
+        indirect->len = total_length;
+        indirect->table_desc.va = evt_struct->ext_list_token;
+        indirect->table_desc.len = sg_mapped * sizeof(indirect->desc_list[0]);
+        memcpy(indirect->desc_list, evt_struct->ext_list,
+               MAX_INDIRECT_BUFS * sizeof(struct srp_direct_buf));
         
         return 1;
 }
@@ -463,20 +464,20 @@ static int map_sg_data(struct scsi_cmnd *cmd,
 static int map_single_data(struct scsi_cmnd *cmd,
                            struct srp_cmd *srp_cmd, struct device *dev)
 {
-        struct memory_descriptor *data =
-            (struct memory_descriptor *)srp_cmd->additional_data;
+        struct srp_direct_buf *data =
+                (struct srp_direct_buf *) srp_cmd->add_data;
 
-        data->virtual_address =
+        data->va =
                 dma_map_single(dev, cmd->request_buffer,
                                cmd->request_bufflen,
                                DMA_BIDIRECTIONAL);
-        if (dma_mapping_error(data->virtual_address)) {
+        if (dma_mapping_error(data->va)) {
                 printk(KERN_ERR
                        "ibmvscsi: Unable to map request_buffer for command!\n");
                 return 0;
         }
-        data->length = cmd->request_bufflen;
-        data->memory_handle = 0;
+        data->len = cmd->request_bufflen;
+        data->key = 0;
 
         set_srp_direction(cmd, srp_cmd, 1);
 
@@ -548,7 +549,7 @@ static int ibmvscsi_send_srp_event(struct srp_event_struct *evt_struct,
 
         /* Copy the IU into the transfer area */
         *evt_struct->xfer_iu = evt_struct->iu;
-        evt_struct->xfer_iu->srp.generic.tag = (u64)evt_struct;
+        evt_struct->xfer_iu->srp.rsp.tag = (u64)evt_struct;
 
         /* Add this to the sent list.  We need to do this 
          * before we actually send 
@@ -586,27 +587,27 @@ static void handle_cmd_rsp(struct srp_event_struct *evt_struct)
         struct srp_rsp *rsp = &evt_struct->xfer_iu->srp.rsp;
         struct scsi_cmnd *cmnd = evt_struct->cmnd;
 
-        if (unlikely(rsp->type != SRP_RSP_TYPE)) {
+        if (unlikely(rsp->opcode != SRP_RSP)) {
                 if (printk_ratelimit())
                         printk(KERN_WARNING 
                                "ibmvscsi: bad SRP RSP type %d\n",
-                               rsp->type);
+                               rsp->opcode);
         }
         
         if (cmnd) {
                 cmnd->result = rsp->status;
                 if (((cmnd->result >> 1) & 0x1f) == CHECK_CONDITION)
                         memcpy(cmnd->sense_buffer,
-                               rsp->sense_and_response_data,
-                               rsp->sense_data_list_length);
+                               rsp->data,
+                               rsp->sense_data_len);
                 unmap_cmd_data(&evt_struct->iu.srp.cmd, 
                                evt_struct, 
                                evt_struct->hostdata->dev);
 
-                if (rsp->doover)
-                        cmnd->resid = rsp->data_out_residual_count;
-                else if (rsp->diover)
-                        cmnd->resid = rsp->data_in_residual_count;
+                if (rsp->flags & SRP_RSP_FLAG_DOOVER)
+                        cmnd->resid = rsp->data_out_res_cnt;
+                else if (rsp->flags & SRP_RSP_FLAG_DIOVER)
+                        cmnd->resid = rsp->data_in_res_cnt;
         }
 
         if (evt_struct->cmnd_done)
@@ -633,10 +634,11 @@ static int ibmvscsi_queuecommand(struct scsi_cmnd *cmnd,
 {
         struct srp_cmd *srp_cmd;
         struct srp_event_struct *evt_struct;
-        struct indirect_descriptor *indirect;
+        struct srp_indirect_buf *indirect;
         struct ibmvscsi_host_data *hostdata =
                 (struct ibmvscsi_host_data *)&cmnd->device->host->hostdata;
         u16 lun = lun_from_dev(cmnd->device);
+        u8 out_fmt, in_fmt;
 
         evt_struct = get_event_struct(&hostdata->pool);
         if (!evt_struct)
@@ -644,8 +646,8 @@ static int ibmvscsi_queuecommand(struct scsi_cmnd *cmnd,
 
         /* Set up the actual SRP IU */
         srp_cmd = &evt_struct->iu.srp.cmd;
-        memset(srp_cmd, 0x00, sizeof(*srp_cmd));
-        srp_cmd->type = SRP_CMD_TYPE;
+        memset(srp_cmd, 0x00, SRP_MAX_IU_LEN);
+        srp_cmd->opcode = SRP_CMD;
         memcpy(srp_cmd->cdb, cmnd->cmnd, sizeof(cmnd->cmnd));
         srp_cmd->lun = ((u64) lun) << 48;
 
@@ -664,13 +666,15 @@ static int ibmvscsi_queuecommand(struct scsi_cmnd *cmnd,
         evt_struct->cmnd_done = done;
 
         /* Fix up dma address of the buffer itself */
-        indirect = (struct indirect_descriptor *)srp_cmd->additional_data;
-        if (((srp_cmd->data_out_format == SRP_INDIRECT_BUFFER) ||
-            (srp_cmd->data_in_format == SRP_INDIRECT_BUFFER)) &&
-            (indirect->head.virtual_address == 0)) {
-                indirect->head.virtual_address = evt_struct->crq.IU_data_ptr +
-                    offsetof(struct srp_cmd, additional_data) +
-                    offsetof(struct indirect_descriptor, list);
+        indirect = (struct srp_indirect_buf *) srp_cmd->add_data;
+        out_fmt = srp_cmd->buf_fmt >> 4;
+        in_fmt = srp_cmd->buf_fmt & ((1U << 4) - 1);
+        if ((in_fmt == SRP_DATA_DESC_INDIRECT ||
+             out_fmt == SRP_DATA_DESC_INDIRECT) &&
+            indirect->table_desc.va == 0) {
+                indirect->table_desc.va = evt_struct->crq.IU_data_ptr +
+                        offsetof(struct srp_cmd, add_data) +
+                        offsetof(struct srp_indirect_buf, desc_list);
         }
 
         return ibmvscsi_send_srp_event(evt_struct, hostdata);
@@ -780,10 +784,10 @@ static void send_mad_adapter_info(struct ibmvscsi_host_data *hostdata)
 static void login_rsp(struct srp_event_struct *evt_struct)
 {
         struct ibmvscsi_host_data *hostdata = evt_struct->hostdata;
-        switch (evt_struct->xfer_iu->srp.generic.type) {
-        case SRP_LOGIN_RSP_TYPE:        /* it worked! */
+        switch (evt_struct->xfer_iu->srp.login_rsp.opcode) {
+        case SRP_LOGIN_RSP:     /* it worked! */
                 break;
-        case SRP_LOGIN_REJ_TYPE:        /* refused! */
+        case SRP_LOGIN_REJ:     /* refused! */
                 printk(KERN_INFO "ibmvscsi: SRP_LOGIN_REJ reason %u\n",
                        evt_struct->xfer_iu->srp.login_rej.reason);
                 /* Login failed.  */
@@ -792,7 +796,7 @@ static void login_rsp(struct srp_event_struct *evt_struct)
         default:
                 printk(KERN_ERR
                        "ibmvscsi: Invalid login response typecode 0x%02x!\n",
-                       evt_struct->xfer_iu->srp.generic.type);
+                       evt_struct->xfer_iu->srp.login_rsp.opcode);
                 /* Login failed.  */
                 atomic_set(&hostdata->request_limit, -1);
                 return;
@@ -800,17 +804,17 @@ static void login_rsp(struct srp_event_struct *evt_struct)
 
         printk(KERN_INFO "ibmvscsi: SRP_LOGIN succeeded\n");
 
-        if (evt_struct->xfer_iu->srp.login_rsp.request_limit_delta >
+        if (evt_struct->xfer_iu->srp.login_rsp.req_lim_delta >
             (max_requests - 2))
-                evt_struct->xfer_iu->srp.login_rsp.request_limit_delta =
+                evt_struct->xfer_iu->srp.login_rsp.req_lim_delta =
                     max_requests - 2;
 
         /* Now we know what the real request-limit is */
         atomic_set(&hostdata->request_limit,
-                   evt_struct->xfer_iu->srp.login_rsp.request_limit_delta);
+                   evt_struct->xfer_iu->srp.login_rsp.req_lim_delta);
 
         hostdata->host->can_queue =
-            evt_struct->xfer_iu->srp.login_rsp.request_limit_delta - 2;
+            evt_struct->xfer_iu->srp.login_rsp.req_lim_delta - 2;
 
         if (hostdata->host->can_queue < 1) {
                 printk(KERN_ERR "ibmvscsi: Invalid request_limit_delta\n");
@@ -849,9 +853,9 @@ static int send_srp_login(struct ibmvscsi_host_data *hostdata)
 
         login = &evt_struct->iu.srp.login_req;
         memset(login, 0x00, sizeof(struct srp_login_req));
-        login->type = SRP_LOGIN_REQ_TYPE;
-        login->max_requested_initiator_to_target_iulen = sizeof(union srp_iu);
-        login->required_buffer_formats = 0x0006;
+        login->opcode = SRP_LOGIN_REQ;
+        login->req_it_iu_len = sizeof(union srp_iu);
+        login->req_buf_fmt = SRP_BUF_FORMAT_DIRECT | SRP_BUF_FORMAT_INDIRECT;
         
         spin_lock_irqsave(hostdata->host->host_lock, flags);
         /* Start out with a request limit of 1, since this is negotiated in
@@ -929,13 +933,13 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd)
         
         /* Set up an abort SRP command */
         memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
-        tsk_mgmt->type = SRP_TSK_MGMT_TYPE;
+        tsk_mgmt->opcode = SRP_TSK_MGMT;
         tsk_mgmt->lun = ((u64) lun) << 48;
-        tsk_mgmt->task_mgmt_flags = 0x01;       /* ABORT TASK */
-        tsk_mgmt->managed_task_tag = (u64) found_evt;
+        tsk_mgmt->tsk_mgmt_func = SRP_TSK_ABORT_TASK;
+        tsk_mgmt->task_tag = (u64) found_evt;
 
         printk(KERN_INFO "ibmvscsi: aborting command. lun 0x%lx, tag 0x%lx\n",
-               tsk_mgmt->lun, tsk_mgmt->managed_task_tag);
+               tsk_mgmt->lun, tsk_mgmt->task_tag);
 
         evt->sync_srp = &srp_rsp;
         init_completion(&evt->comp);
@@ -949,25 +953,25 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd)
         wait_for_completion(&evt->comp);
 
         /* make sure we got a good response */
-        if (unlikely(srp_rsp.srp.generic.type != SRP_RSP_TYPE)) {
+        if (unlikely(srp_rsp.srp.rsp.opcode != SRP_RSP)) {
                 if (printk_ratelimit())
                         printk(KERN_WARNING 
                                "ibmvscsi: abort bad SRP RSP type %d\n",
-                               srp_rsp.srp.generic.type);
+                               srp_rsp.srp.rsp.opcode);
                 return FAILED;
         }
 
-        if (srp_rsp.srp.rsp.rspvalid)
-                rsp_rc = *((int *)srp_rsp.srp.rsp.sense_and_response_data);
+        if (srp_rsp.srp.rsp.flags & SRP_RSP_FLAG_RSPVALID)
+                rsp_rc = *((int *)srp_rsp.srp.rsp.data);
         else
                 rsp_rc = srp_rsp.srp.rsp.status;
 
         if (rsp_rc) {
                 if (printk_ratelimit())
                         printk(KERN_WARNING 
-                       "ibmvscsi: abort code %d for task tag 0x%lx\n",
+                               "ibmvscsi: abort code %d for task tag 0x%lx\n",
                                rsp_rc,
-                               tsk_mgmt->managed_task_tag);
+                               tsk_mgmt->task_tag);
                 return FAILED;
         }
 
@@ -988,13 +992,13 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd)
                 spin_unlock_irqrestore(hostdata->host->host_lock, flags);
                 printk(KERN_INFO
                        "ibmvscsi: aborted task tag 0x%lx completed\n",
-                       tsk_mgmt->managed_task_tag);
+                       tsk_mgmt->task_tag);
                 return SUCCESS;
         }
 
         printk(KERN_INFO
                "ibmvscsi: successfully aborted task tag 0x%lx\n",
-               tsk_mgmt->managed_task_tag);
+               tsk_mgmt->task_tag);
 
         cmd->result = (DID_ABORT << 16);
         list_del(&found_evt->list);
@@ -1041,9 +1045,9 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd)
 
         /* Set up a lun reset SRP command */
         memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
-        tsk_mgmt->type = SRP_TSK_MGMT_TYPE;
+        tsk_mgmt->opcode = SRP_TSK_MGMT;
         tsk_mgmt->lun = ((u64) lun) << 48;
-        tsk_mgmt->task_mgmt_flags = 0x08;       /* LUN RESET */
+        tsk_mgmt->tsk_mgmt_func = SRP_TSK_LUN_RESET;
 
         printk(KERN_INFO "ibmvscsi: resetting device. lun 0x%lx\n",
                tsk_mgmt->lun);
@@ -1060,16 +1064,16 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd)
         wait_for_completion(&evt->comp);
 
         /* make sure we got a good response */
-        if (unlikely(srp_rsp.srp.generic.type != SRP_RSP_TYPE)) {
+        if (unlikely(srp_rsp.srp.rsp.opcode != SRP_RSP)) {
                 if (printk_ratelimit())
                         printk(KERN_WARNING 
                                "ibmvscsi: reset bad SRP RSP type %d\n",
-                               srp_rsp.srp.generic.type);
+                               srp_rsp.srp.rsp.opcode);
                 return FAILED;
         }
 
-        if (srp_rsp.srp.rsp.rspvalid)
-                rsp_rc = *((int *)srp_rsp.srp.rsp.sense_and_response_data);
+        if (srp_rsp.srp.rsp.flags & SRP_RSP_FLAG_RSPVALID)
+                rsp_rc = *((int *)srp_rsp.srp.rsp.data);
         else
                 rsp_rc = srp_rsp.srp.rsp.status;
 
@@ -1077,8 +1081,7 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd)
                 if (printk_ratelimit())
                         printk(KERN_WARNING 
                                "ibmvscsi: reset code %d for task tag 0x%lx\n",
-                       rsp_rc,
-                               tsk_mgmt->managed_task_tag);
+                               rsp_rc, tsk_mgmt->task_tag);
                 return FAILED;
         }
 
@@ -1228,7 +1231,7 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq,
         }
 
         if (crq->format == VIOSRP_SRP_FORMAT)
-                atomic_add(evt_struct->xfer_iu->srp.rsp.request_limit_delta,
+                atomic_add(evt_struct->xfer_iu->srp.rsp.req_lim_delta,
                            &hostdata->request_limit);
 
         if (evt_struct->done)