6 files changed, 57 insertions, 38 deletions

diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index 929170dcd3cb..600ba1202864 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -183,7 +183,7 @@
  * cross a page boundy.
  */
 #define SEGMENTX_LEN    (sizeof(struct SGentry)*DC395x_MAX_SG_LISTENTRY)
-#define VIRTX_LEN       (sizeof(void *) * DC395x_MAX_SG_LISTENTRY)
+
 
 struct SGentry {
         u32 address;            /* bus! address */
@@ -235,7 +235,6 @@ struct ScsiReqBlk {
         u8 sg_count;                    /* No of HW sg entries for this request */
         u8 sg_index;                    /* Index of HW sg entry for this request */
         u32 total_xfer_length;          /* Total number of bytes remaining to be transfered */
-        void **virt_map;
         unsigned char *virt_addr;       /* Virtual address of current transfer position */
 
         /*
@@ -1022,14 +1021,14 @@ static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb,
                         reqlen, cmd->request_buffer, cmd->use_sg,
                         srb->sg_count);
 
+                srb->virt_addr = page_address(sl->page);
                 for (i = 0; i < srb->sg_count; i++) {
-                        u32 seglen = (u32)sg_dma_len(sl + i);
-                        sgp[i].address = (u32)sg_dma_address(sl + i);
+                        u32 busaddr = (u32)sg_dma_address(&sl[i]);
+                        u32 seglen = (u32)sl[i].length;
+                        sgp[i].address = busaddr;
                         sgp[i].length = seglen;
                         srb->total_xfer_length += seglen;
-                        srb->virt_map[i] = kmap(sl[i].page);
                 }
-                srb->virt_addr = srb->virt_map[0];
                 sgp += srb->sg_count - 1;
 
                 /*
@@ -1976,7 +1975,6 @@ static void sg_update_list(struct ScsiReqBlk *srb, u32 left)
         int segment = cmd->use_sg;
         u32 xferred = srb->total_xfer_length - left; /* bytes transfered */
         struct SGentry *psge = srb->segment_x + srb->sg_index;
-        void **virt = srb->virt_map;
 
         dprintkdbg(DBG_0,
                 "sg_update_list: Transfered %i of %i bytes, %i remain\n",
@@ -2016,16 +2014,16 @@ static void sg_update_list(struct ScsiReqBlk *srb, u32 left)
 
         /* We have to walk the scatterlist to find it */
         sg = (struct scatterlist *)cmd->request_buffer;
-        idx = 0;
         while (segment--) {
                 unsigned long mask =
                     ~((unsigned long)sg->length - 1) & PAGE_MASK;
                 if ((sg_dma_address(sg) & mask) == (psge->address & mask)) {
-                        srb->virt_addr = virt[idx] + (psge->address & ~PAGE_MASK);
+                        srb->virt_addr = (page_address(sg->page)
+                                           + psge->address -
+                                           (psge->address & PAGE_MASK));
                         return;
                 }
                 ++sg;
-                ++idx;
         }
 
         dprintkl(KERN_ERR, "sg_update_list: sg_to_virt failed\n");
@@ -2151,7 +2149,7 @@ static void data_out_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
                                 DC395x_read32(acb, TRM_S1040_DMA_CXCNT));
                 }
                 /*
-                 * calculate all the residue data that not yet transfered
+                 * calculate all the residue data that not yet tranfered
                  * SCSI transfer counter + left in SCSI FIFO data
                  *
                  * .....TRM_S1040_SCSI_COUNTER (24bits)
@@ -3269,7 +3267,6 @@ static void pci_unmap_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
         struct scsi_cmnd *cmd = srb->cmd;
         enum dma_data_direction dir = cmd->sc_data_direction;
         if (cmd->use_sg && dir != PCI_DMA_NONE) {
-                int i;
                 /* unmap DC395x SG list */
                 dprintkdbg(DBG_SG, "pci_unmap_srb: list=%08x(%05x)\n",
                         srb->sg_bus_addr, SEGMENTX_LEN);
@@ -3279,8 +3276,6 @@ static void pci_unmap_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
                 dprintkdbg(DBG_SG, "pci_unmap_srb: segs=%i buffer=%p\n",
                         cmd->use_sg, cmd->request_buffer);
                 /* unmap the sg segments */
-                for (i = 0; i < srb->sg_count; i++)
-                        kunmap(virt_to_page(srb->virt_map[i]));
                 pci_unmap_sg(acb->dev,
                              (struct scatterlist *)cmd->request_buffer,
                              cmd->use_sg, dir);
@@ -3327,7 +3322,7 @@ static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
 
         if (cmd->use_sg) {
                 struct scatterlist* sg = (struct scatterlist *)cmd->request_buffer;
-                ptr = (struct ScsiInqData *)(srb->virt_map[0] + sg->offset);
+                ptr = (struct ScsiInqData *)(page_address(sg->page) + sg->offset);
         } else {
                 ptr = (struct ScsiInqData *)(cmd->request_buffer);
         }
@@ -4262,9 +4257,8 @@ static void adapter_sg_tables_free(struct AdapterCtlBlk *acb)
         const unsigned srbs_per_page = PAGE_SIZE/SEGMENTX_LEN;
 
         for (i = 0; i < DC395x_MAX_SRB_CNT; i += srbs_per_page)
-                kfree(acb->srb_array[i].segment_x);
-
-        vfree(acb->srb_array[0].virt_map);
+                if (acb->srb_array[i].segment_x)
+                        kfree(acb->srb_array[i].segment_x);
 }
 
 
@@ -4280,12 +4274,9 @@ static int __devinit adapter_sg_tables_alloc(struct AdapterCtlBlk *acb)
         int srb_idx = 0;
         unsigned i = 0;
         struct SGentry *ptr;
-        void **virt_array;
 
-        for (i = 0; i < DC395x_MAX_SRB_CNT; i++) {
+        for (i = 0; i < DC395x_MAX_SRB_CNT; i++)
                 acb->srb_array[i].segment_x = NULL;
-                acb->srb_array[i].virt_map = NULL;
-        }
 
         dprintkdbg(DBG_1, "Allocate %i pages for SG tables\n", pages);
         while (pages--) {
@@ -4306,19 +4297,6 @@ static int __devinit adapter_sg_tables_alloc(struct AdapterCtlBlk *acb)
                     ptr + (i * DC395x_MAX_SG_LISTENTRY);
         else
                 dprintkl(KERN_DEBUG, "No space for tmsrb SG table reserved?!\n");
-
-        virt_array = vmalloc((DC395x_MAX_SRB_CNT + 1) * DC395x_MAX_SG_LISTENTRY * sizeof(void*));
-
-        if (!virt_array) {
-                adapter_sg_tables_free(acb);
-                return 1;
-        }
-
-        for (i = 0; i < DC395x_MAX_SRB_CNT + 1; i++) {
-                acb->srb_array[i].virt_map = virt_array;
-                virt_array += DC395x_MAX_SG_LISTENTRY;
-        }
-
         return 0;
 }
 
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index e2370529c632..7235f94f1191 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -907,9 +907,13 @@ static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev
                 raptorFlag = TRUE;
         }
 
-
+        if (pci_request_regions(pDev, "dpt_i2o")) {
+                PERROR("dpti: adpt_config_hba: pci request region failed\n");
+                return -EINVAL;
+        }
         base_addr_virt = ioremap(base_addr0_phys,hba_map0_area_size);
         if (!base_addr_virt) {
+                pci_release_regions(pDev);
                 PERROR("dpti: adpt_config_hba: io remap failed\n");
                 return -EINVAL;
         }
@@ -919,6 +923,7 @@ static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev
                 if (!msg_addr_virt) {
                         PERROR("dpti: adpt_config_hba: io remap failed on BAR1\n");
                         iounmap(base_addr_virt);
+                        pci_release_regions(pDev);
                         return -EINVAL;
                 }
         } else {
@@ -932,6 +937,7 @@ static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev
                         iounmap(msg_addr_virt);
                 }
                 iounmap(base_addr_virt);
+                pci_release_regions(pDev);
                 return -ENOMEM;
         }
         memset(pHba, 0, sizeof(adpt_hba));
@@ -1027,6 +1033,7 @@ static void adpt_i2o_delete_hba(adpt_hba* pHba)
         up(&adpt_configuration_lock);
 
         iounmap(pHba->base_addr_virt);
+        pci_release_regions(pHba->pDev);
         if(pHba->msg_addr_virt != pHba->base_addr_virt){
                 iounmap(pHba->msg_addr_virt);
         }
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 794fb559efb0..6a75ec2187fd 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -385,6 +385,7 @@ int ata_scsi_error(struct Scsi_Host *host)
          * appropriate place
          */
         host->host_failed--;
+        INIT_LIST_HEAD(&host->eh_cmd_q);
 
         DPRINTK("EXIT\n");
         return 0;
diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c
index 140cea05de3f..efd7d7a61135 100644
--- a/drivers/scsi/sata_sx4.c
+++ b/drivers/scsi/sata_sx4.c
@@ -468,7 +468,7 @@ static void pdc20621_dma_prep(struct ata_queued_cmd *qc)
         for (i = 0; i < last; i++) {
                 buf[idx++] = cpu_to_le32(sg_dma_address(&sg[i]));
                 buf[idx++] = cpu_to_le32(sg_dma_len(&sg[i]));
-                total_len += sg[i].length;
+                total_len += sg_dma_len(&sg[i]);
         }
         buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT);
         sgt_len = idx * 4;
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 2d3c4ac475f2..48edd67982a5 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -336,9 +336,23 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
         unsigned long flags;
         const int size = sizeof(struct scsi_target)
                 + shost->transportt->target_size;
-        struct scsi_target *starget = kmalloc(size, GFP_ATOMIC);
+        struct scsi_target *starget;
         struct scsi_target *found_target;
 
+        /*
+         * Obtain the real parent from the transport. The transport
+         * is allowed to fail (no error) if there is nothing at that
+         * target id.
+         */
+        if (shost->transportt->target_parent) {
+                spin_lock_irqsave(shost->host_lock, flags);
+                parent = shost->transportt->target_parent(shost, channel, id);
+                spin_unlock_irqrestore(shost->host_lock, flags);
+                if (!parent)
+                        return NULL;
+        }
+
+        starget = kmalloc(size, GFP_KERNEL);
         if (!starget) {
                 printk(KERN_ERR "%s: allocation failure\n", __FUNCTION__);
                 return NULL;
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 35d1c1e8e345..e6412fce423c 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -1022,6 +1022,23 @@ static int fc_rport_match(struct attribute_container *cont,
         return &i->rport_attr_cont.ac == cont;
 }
 
+
+/*
+ * Must be called with shost->host_lock held
+ */
+static struct device *fc_target_parent(struct Scsi_Host *shost,
+                                        int channel, uint id)
+{
+        struct fc_rport *rport;
+
+        list_for_each_entry(rport, &fc_host_rports(shost), peers)
+                if ((rport->channel == channel) &&
+                    (rport->scsi_target_id == id))
+                        return &rport->dev;
+
+        return NULL;
+}
+
 struct scsi_transport_template *
 fc_attach_transport(struct fc_function_template *ft)
 {
@@ -1057,6 +1074,8 @@ fc_attach_transport(struct fc_function_template *ft)
 
         /* Transport uses the shost workq for scsi scanning */
         i->t.create_work_queue = 1;
+
+        i->t.target_parent = fc_target_parent;
         
         /*
          * Setup SCSI Target Attributes.