16 files changed, 157 insertions, 92 deletions

diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index cb2ee25f213f..531a1f9ceb51 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -1260,16 +1260,15 @@ static void free_hard_reset_SCs(struct Scsi_Host *shpnt, Scsi_Cmnd **SCs)
  * Reset the bus
  *
  */
-static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
+static int aha152x_bus_reset_host(struct Scsi_Host *shpnt)
 {
-        struct Scsi_Host *shpnt = SCpnt->device->host;
         unsigned long flags;
 
         DO_LOCK(flags);
 
 #if defined(AHA152X_DEBUG)
         if(HOSTDATA(shpnt)->debug & debug_eh) {
-                printk(DEBUG_LEAD "aha152x_bus_reset(%p)", CMDINFO(SCpnt), SCpnt);
+                printk(KERN_DEBUG "scsi%d: bus reset", shpnt->host_no);
                 show_queues(shpnt);
         }
 #endif
@@ -1277,14 +1276,14 @@ static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
         free_hard_reset_SCs(shpnt, &ISSUE_SC);
         free_hard_reset_SCs(shpnt, &DISCONNECTED_SC);
 
-        DPRINTK(debug_eh, DEBUG_LEAD "resetting bus\n", CMDINFO(SCpnt));
+        DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting bus\n", shpnt->host_no);
 
         SETPORT(SCSISEQ, SCSIRSTO);
         mdelay(256);
         SETPORT(SCSISEQ, 0);
         mdelay(DELAY);
 
-        DPRINTK(debug_eh, DEBUG_LEAD "bus resetted\n", CMDINFO(SCpnt));
+        DPRINTK(debug_eh, KERN_DEBUG "scsi%d: bus resetted\n", shpnt->host_no);
 
         setup_expected_interrupts(shpnt);
         if(HOSTDATA(shpnt)->commands==0)
@@ -1295,6 +1294,14 @@ static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
         return SUCCESS;
 }
 
+/*
+ * Reset the bus
+ *
+ */
+static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
+{
+        return aha152x_bus_reset_host(SCpnt->device->host);
+}
 
 /*
  *  Restore default values to the AIC-6260 registers and reset the fifos
@@ -1337,23 +1344,28 @@ static void reset_ports(struct Scsi_Host *shpnt)
  * Reset the host (bus and controller)
  *
  */
-int aha152x_host_reset(Scsi_Cmnd * SCpnt)
+int aha152x_host_reset_host(struct Scsi_Host *shpnt)
 {
-#if defined(AHA152X_DEBUG)
-        struct Scsi_Host *shpnt = SCpnt->device->host;
-#endif
-
-        DPRINTK(debug_eh, DEBUG_LEAD "aha152x_host_reset(%p)\n", CMDINFO(SCpnt), SCpnt);
+        DPRINTK(debug_eh, KERN_DEBUG "scsi%d: host reset\n", shpnt->host_no);
 
-        aha152x_bus_reset(SCpnt);
+        aha152x_bus_reset_host(shpnt);
 
-        DPRINTK(debug_eh, DEBUG_LEAD "resetting ports\n", CMDINFO(SCpnt));
-        reset_ports(SCpnt->device->host);
+        DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting ports\n", shpnt->host_no);
+        reset_ports(shpnt);
 
         return SUCCESS;
 }
 
 /*
+ * Reset the host (bus and controller)
+ * 
+ */
+static int aha152x_host_reset(Scsi_Cmnd *SCpnt)
+{
+        return aha152x_host_reset_host(SCpnt->device->host);
+}
+
+/*
  * Return the "logical geometry"
  *
  */
@@ -1431,22 +1443,18 @@ static void run(void)
 {
         int i;
         for (i = 0; i<ARRAY_SIZE(aha152x_host); i++) {
-                struct Scsi_Host *shpnt = aha152x_host[i];
-                if (shpnt && HOSTDATA(shpnt)->service) {
-                        HOSTDATA(shpnt)->service=0;
-                        is_complete(shpnt);
-                }
+                is_complete(aha152x_host[i]);
         }
 }
 
 /*
- *    Interrupts handler
+ * Interrupt handler
  *
  */
-
 static irqreturn_t intr(int irqno, void *dev_id, struct pt_regs *regs)
 {
         struct Scsi_Host *shpnt = lookup_irq(irqno);
+        unsigned long flags;
         unsigned char rev, dmacntrl0;
 
         if (!shpnt) {
@@ -1472,23 +1480,23 @@ static irqreturn_t intr(int irqno, void *dev_id, struct pt_regs *regs)
         if ((rev == 0xFF) && (dmacntrl0 == 0xFF))
                 return IRQ_NONE;
 
+        if( TESTLO(DMASTAT, INTSTAT) )
+                return IRQ_NONE;        
+
         /* no more interrupts from the controller, while we're busy.
            INTEN is restored by the BH handler */
         CLRBITS(DMACNTRL0, INTEN);
 
-#if 0
-        /* check if there is already something to be
-           serviced; should not happen */
-        if(HOSTDATA(shpnt)->service) {
-                printk(KERN_ERR "aha152x%d: lost interrupt (%d)\n", HOSTNO, HOSTDATA(shpnt)->service);
-                show_queues(shpnt);
+        DO_LOCK(flags);
+        if( HOSTDATA(shpnt)->service==0 ) {
+                HOSTDATA(shpnt)->service=1;
+
+                /* Poke the BH handler */
+                INIT_WORK(&aha152x_tq, (void *) run, NULL);
+                schedule_work(&aha152x_tq);
         }
-#endif
-        
-        /* Poke the BH handler */
-        HOSTDATA(shpnt)->service++;
-        INIT_WORK(&aha152x_tq, (void *) run, NULL);
-        schedule_work(&aha152x_tq);
+        DO_UNLOCK(flags);
+
         return IRQ_HANDLED;
 }
 
@@ -2527,7 +2535,18 @@ static void is_complete(struct Scsi_Host *shpnt)
         unsigned long flags;
         int pending;
 
+        if(!shpnt)
+                return;
+
         DO_LOCK(flags);
+
+        if( HOSTDATA(shpnt)->service==0 )  {
+                DO_UNLOCK(flags);
+                return;
+        }
+
+        HOSTDATA(shpnt)->service = 0;
+
         if(HOSTDATA(shpnt)->in_intr) {
                 DO_UNLOCK(flags);
                 /* aha152x_error never returns.. */
diff --git a/drivers/scsi/aha152x.h b/drivers/scsi/aha152x.h
index d277613af29b..d2add24d02a3 100644
--- a/drivers/scsi/aha152x.h
+++ b/drivers/scsi/aha152x.h
@@ -332,6 +332,6 @@ struct aha152x_setup {
 
 struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *);
 void aha152x_release(struct Scsi_Host *);
-int aha152x_host_reset(Scsi_Cmnd *);
+int aha152x_host_reset_host(struct Scsi_Host *);
 
 #endif /* _AHA152X_H */
diff --git a/drivers/scsi/jazz_esp.c b/drivers/scsi/jazz_esp.c
index 23728d1c980c..fcd304e11c26 100644
--- a/drivers/scsi/jazz_esp.c
+++ b/drivers/scsi/jazz_esp.c
@@ -65,27 +65,6 @@ static int jazz_esp_release(struct Scsi_Host *shost)
         return 0;
 }
 
-static struct scsi_host_template driver_template = {
-        .proc_name              = "jazz_esp",
-        .proc_info              = &esp_proc_info,
-        .name                   = "ESP 100/100a/200",
-        .detect                 = jazz_esp_detect,
-        .slave_alloc            = esp_slave_alloc,
-        .slave_destroy          = esp_slave_destroy,
-        .release                = jazz_esp_release,
-        .info                   = esp_info,
-        .queuecommand           = esp_queue,
-        .eh_abort_handler       = esp_abort,
-        .eh_bus_reset_handler   = esp_reset,
-        .can_queue              = 7,
-        .this_id                = 7,
-        .sg_tablesize           = SG_ALL,
-        .cmd_per_lun            = 1,
-        .use_clustering         = DISABLE_CLUSTERING,
-};
-
-#include "scsi_module.c"
-
 /***************************************************************** Detection */
 static int jazz_esp_detect(struct scsi_host_template *tpnt)
 {
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 5f1d7580218d..4f91b0dc572b 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -82,6 +82,10 @@ int atapi_enabled = 0;
 module_param(atapi_enabled, int, 0444);
 MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)");
 
+int libata_fua = 0;
+module_param_named(fua, libata_fua, int, 0444);
+MODULE_PARM_DESC(fua, "FUA support (0=off, 1=on)");
+
 MODULE_AUTHOR("Jeff Garzik");
 MODULE_DESCRIPTION("Library module for ATA devices");
 MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 07b1e7cc61df..59503c9ccac9 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -1708,6 +1708,8 @@ static int ata_dev_supports_fua(u16 *id)
 {
         unsigned char model[41], fw[9];
 
+        if (!libata_fua)
+                return 0;
         if (!ata_id_has_fua(id))
                 return 0;
 
diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h
index e03ce48b7b4b..fddaf479a544 100644
--- a/drivers/scsi/libata.h
+++ b/drivers/scsi/libata.h
@@ -41,6 +41,7 @@ struct ata_scsi_args {
 
 /* libata-core.c */
 extern int atapi_enabled;
+extern int libata_fua;
 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
                                       struct ata_device *dev);
 extern int ata_rwcmd_protocol(struct ata_queued_cmd *qc);
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index 7de267e14458..4f39dd01936d 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -793,6 +793,20 @@ megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
         return 0;
 }
 
+static int megasas_slave_configure(struct scsi_device *sdev)
+{
+        /*
+         * Don't export physical disk devices to the disk driver.
+         *
+         * FIXME: Currently we don't export them to the midlayer at all.
+         *        That will be fixed once LSI engineers have audited the
+         *        firmware for possible issues.
+         */
+        if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && sdev->type == TYPE_DISK)
+                return -ENXIO;
+        return 0;
+}
+
 /**
  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
  * @instance:                           Adapter soft state
@@ -943,6 +957,7 @@ static struct scsi_host_template megasas_template = {
         .module = THIS_MODULE,
         .name = "LSI Logic SAS based MegaRAID driver",
         .proc_name = "megaraid_sas",
+        .slave_configure = megasas_slave_configure,
         .queuecommand = megasas_queue_command,
         .eh_device_reset_handler = megasas_reset_device,
         .eh_bus_reset_handler = megasas_reset_bus_host,
@@ -1071,20 +1086,6 @@ megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
                         break;
                 }
 
-                /*
-                 * Don't export physical disk devices to mid-layer.
-                 */
-                if (!MEGASAS_IS_LOGICAL(cmd->scmd) &&
-                    (hdr->cmd_status == MFI_STAT_OK) &&
-                    (cmd->scmd->cmnd[0] == INQUIRY)) {
-
-                        if (((*(u8 *) cmd->scmd->request_buffer) & 0x1F) ==
-                            TYPE_DISK) {
-                                cmd->scmd->result = DID_BAD_TARGET << 16;
-                                exception = 1;
-                        }
-                }
-
         case MFI_CMD_LD_READ:
         case MFI_CMD_LD_WRITE:
 
diff --git a/drivers/scsi/pcmcia/aha152x_stub.c b/drivers/scsi/pcmcia/aha152x_stub.c
index 0c9edb7051f4..5609847e254a 100644
--- a/drivers/scsi/pcmcia/aha152x_stub.c
+++ b/drivers/scsi/pcmcia/aha152x_stub.c
@@ -275,10 +275,8 @@ static int aha152x_resume(struct pcmcia_device *dev)
 
         link->state &= ~DEV_SUSPEND;
         if (link->state & DEV_CONFIG) {
-                Scsi_Cmnd tmp;
                 pcmcia_request_configuration(link->handle, &link->conf);
-                tmp.device->host = info->host;
-                aha152x_host_reset(&tmp);
+                aha152x_host_reset_host(info->host);
         }
 
         return 0;
diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c
index 17f74d3c10e7..9face3c6aa21 100644
--- a/drivers/scsi/sata_sil.c
+++ b/drivers/scsi/sata_sil.c
@@ -49,11 +49,13 @@
 #define DRV_VERSION     "0.9"
 
 enum {
+        SIL_FLAG_RERR_ON_DMA_ACT = (1 << 29),
         SIL_FLAG_MOD15WRITE     = (1 << 30),
 
         sil_3112                = 0,
         sil_3112_m15w           = 1,
-        sil_3114                = 2,
+        sil_3512                = 2,
+        sil_3114                = 3,
 
         SIL_FIFO_R0             = 0x40,
         SIL_FIFO_W0             = 0x41,
@@ -90,7 +92,7 @@ static void sil_post_set_mode (struct ata_port *ap);
 static const struct pci_device_id sil_pci_tbl[] = {
         { 0x1095, 0x3112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
         { 0x1095, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
-        { 0x1095, 0x3512, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
+        { 0x1095, 0x3512, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3512 },
         { 0x1095, 0x3114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3114 },
         { 0x1002, 0x436e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
         { 0x1002, 0x4379, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
@@ -185,7 +187,8 @@ static const struct ata_port_info sil_port_info[] = {
                 .mwdma_mask     = 0x07,                 /* mwdma0-2 */
                 .udma_mask      = 0x3f,                 /* udma0-5 */
                 .port_ops       = &sil_ops,
-        }, /* sil_3112_15w - keep it sync'd w/ sil_3112 */
+        },
+        /* sil_3112_15w - keep it sync'd w/ sil_3112 */
         {
                 .sht            = &sil_sht,
                 .host_flags     = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
@@ -195,11 +198,24 @@ static const struct ata_port_info sil_port_info[] = {
                 .mwdma_mask     = 0x07,                 /* mwdma0-2 */
                 .udma_mask      = 0x3f,                 /* udma0-5 */
                 .port_ops       = &sil_ops,
-        }, /* sil_3114 */
+        },
+        /* sil_3512 */
         {
                 .sht            = &sil_sht,
                 .host_flags     = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
-                                  ATA_FLAG_SRST | ATA_FLAG_MMIO,
+                                  ATA_FLAG_SRST | ATA_FLAG_MMIO |
+                                  SIL_FLAG_RERR_ON_DMA_ACT,
+                .pio_mask       = 0x1f,                 /* pio0-4 */
+                .mwdma_mask     = 0x07,                 /* mwdma0-2 */
+                .udma_mask      = 0x3f,                 /* udma0-5 */
+                .port_ops       = &sil_ops,
+        },
+        /* sil_3114 */
+        {
+                .sht            = &sil_sht,
+                .host_flags     = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
+                                  ATA_FLAG_SRST | ATA_FLAG_MMIO |
+                                  SIL_FLAG_RERR_ON_DMA_ACT,
                 .pio_mask       = 0x1f,                 /* pio0-4 */
                 .mwdma_mask     = 0x07,                 /* mwdma0-2 */
                 .udma_mask      = 0x3f,                 /* udma0-5 */
@@ -216,12 +232,13 @@ static const struct {
         unsigned long scr;      /* SATA control register block */
         unsigned long sien;     /* SATA Interrupt Enable register */
         unsigned long xfer_mode;/* data transfer mode register */
+        unsigned long sfis_cfg; /* SATA FIS reception config register */
 } sil_port[] = {
         /* port 0 ... */
-        { 0x80, 0x8A, 0x00, 0x100, 0x148, 0xb4 },
-        { 0xC0, 0xCA, 0x08, 0x180, 0x1c8, 0xf4 },
-        { 0x280, 0x28A, 0x200, 0x300, 0x348, 0x2b4 },
-        { 0x2C0, 0x2CA, 0x208, 0x380, 0x3c8, 0x2f4 },
+        { 0x80, 0x8A, 0x00, 0x100, 0x148, 0xb4, 0x14c },
+        { 0xC0, 0xCA, 0x08, 0x180, 0x1c8, 0xf4, 0x1cc },
+        { 0x280, 0x28A, 0x200, 0x300, 0x348, 0x2b4, 0x34c },
+        { 0x2C0, 0x2CA, 0x208, 0x380, 0x3c8, 0x2f4, 0x3cc },
         /* ... port 3 */
 };
 
@@ -471,6 +488,23 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
                 dev_printk(KERN_WARNING, &pdev->dev,
                          "cache line size not set.  Driver may not function\n");
 
+        /* Apply R_ERR on DMA activate FIS errata workaround */
+        if (probe_ent->host_flags & SIL_FLAG_RERR_ON_DMA_ACT) {
+                int cnt;
+
+                for (i = 0, cnt = 0; i < probe_ent->n_ports; i++) {
+                        tmp = readl(mmio_base + sil_port[i].sfis_cfg);
+                        if ((tmp & 0x3) != 0x01)
+                                continue;
+                        if (!cnt)
+                                dev_printk(KERN_INFO, &pdev->dev,
+                                           "Applying R_ERR on DMA activate "
+                                           "FIS errata fix\n");
+                        writel(tmp & ~0x3, mmio_base + sil_port[i].sfis_cfg);
+                        cnt++;
+                }
+        }
+
         if (ent->driver_data == sil_3114) {
                 irq_mask = SIL_MASK_4PORT;
 
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 5cc97b721661..ff82ccfbb106 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -1308,7 +1308,7 @@ int scsi_decide_disposition(struct scsi_cmnd *scmd)
          * the request was not marked fast fail.  Note that above,
          * even if the request is marked fast fail, we still requeue
          * for queue congestion conditions (QUEUE_FULL or BUSY) */
-        if ((++scmd->retries) < scmd->allowed 
+        if ((++scmd->retries) <= scmd->allowed
             && !blk_noretry_request(scmd->request)) {
                 return NEEDS_RETRY;
         } else {
@@ -1433,7 +1433,7 @@ static void scsi_eh_flush_done_q(struct list_head *done_q)
                 list_del_init(&scmd->eh_entry);
                 if (scsi_device_online(scmd->device) &&
                     !blk_noretry_request(scmd->request) &&
-                    (++scmd->retries < scmd->allowed)) {
+                    (++scmd->retries <= scmd->allowed)) {
                         SCSI_LOG_ERROR_RECOVERY(3, printk("%s: flush"
                                                           " retry cmd: %p\n",
                                                           current->comm,
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 4362dcde74af..701a328f7beb 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1498,7 +1498,7 @@ static void scsi_kill_request(struct request *req, request_queue_t *q)
 static void scsi_softirq_done(struct request *rq)
 {
         struct scsi_cmnd *cmd = rq->completion_data;
-        unsigned long wait_for = cmd->allowed * cmd->timeout_per_command;
+        unsigned long wait_for = (cmd->allowed + 1) * cmd->timeout_per_command;
         int disposition;
 
         INIT_LIST_HEAD(&cmd->eh_entry);
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 5acb83ca5ae5..f9ecc3dea7df 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -752,8 +752,20 @@ static int scsi_add_lun(struct scsi_device *sdev, char *inq_result, int *bflags)
 
         transport_configure_device(&sdev->sdev_gendev);
 
-        if (sdev->host->hostt->slave_configure)
-                sdev->host->hostt->slave_configure(sdev);
+        if (sdev->host->hostt->slave_configure) {
+                int ret = sdev->host->hostt->slave_configure(sdev);
+                if (ret) {
+                        /*
+                         * if LLDD reports slave not present, don't clutter
+                         * console with alloc failure messages
+                         */
+                        if (ret != -ENXIO) {
+                                sdev_printk(KERN_ERR, sdev,
+                                        "failed to configure device\n");
+                        }
+                        return SCSI_SCAN_NO_RESPONSE;
+                }
+        }
 
         /*
          * Ok, the device is now all set up, we can
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index f2c9acf11bd0..929032e370db 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -1498,8 +1498,7 @@ fc_remote_port_add(struct Scsi_Host *shost, int channel,
         }
 
         /* Search the bindings array */
-        if (likely((ids->roles & FC_RPORT_ROLE_FCP_TARGET) &&
-                (fc_host_tgtid_bind_type(shost) != FC_TGTID_BIND_NONE))) {
+        if (fc_host_tgtid_bind_type(shost) != FC_TGTID_BIND_NONE) {
 
                 /* search for a matching consistent binding */
 
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 930db398d107..9d9872347f56 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -89,6 +89,11 @@
 #define SD_MAX_RETRIES          5
 #define SD_PASSTHROUGH_RETRIES  1
 
+/*
+ * Size of the initial data buffer for mode and read capacity data
+ */
+#define SD_BUF_SIZE             512
+
 static void scsi_disk_release(struct kref *kref);
 
 struct scsi_disk {
@@ -1239,7 +1244,7 @@ sd_do_mode_sense(struct scsi_device *sdp, int dbd, int modepage,
 
 /*
  * read write protect setting, if possible - called only in sd_revalidate_disk()
- * called with buffer of length 512
+ * called with buffer of length SD_BUF_SIZE
  */
 static void
 sd_read_write_protect_flag(struct scsi_disk *sdkp, char *diskname,
@@ -1297,7 +1302,7 @@ sd_read_write_protect_flag(struct scsi_disk *sdkp, char *diskname,
 
 /*
  * sd_read_cache_type - called only from sd_revalidate_disk()
- * called with buffer of length 512
+ * called with buffer of length SD_BUF_SIZE
  */
 static void
 sd_read_cache_type(struct scsi_disk *sdkp, char *diskname,
@@ -1342,6 +1347,8 @@ sd_read_cache_type(struct scsi_disk *sdkp, char *diskname,
 
         /* Take headers and block descriptors into account */
         len += data.header_length + data.block_descriptor_length;
+        if (len > SD_BUF_SIZE)
+                goto bad_sense;
 
         /* Get the data */
         res = sd_do_mode_sense(sdp, dbd, modepage, buffer, len, &data, &sshdr);
@@ -1354,6 +1361,12 @@ sd_read_cache_type(struct scsi_disk *sdkp, char *diskname,
                 int ct = 0;
                 int offset = data.header_length + data.block_descriptor_length;
 
+                if (offset >= SD_BUF_SIZE - 2) {
+                        printk(KERN_ERR "%s: malformed MODE SENSE response",
+                                diskname);
+                        goto defaults;
+                }
+
                 if ((buffer[offset] & 0x3f) != modepage) {
                         printk(KERN_ERR "%s: got wrong page\n", diskname);
                         goto defaults;
@@ -1398,6 +1411,7 @@ defaults:
                diskname);
         sdkp->WCE = 0;
         sdkp->RCD = 0;
+        sdkp->DPOFUA = 0;
 }
 
 /**
@@ -1421,7 +1435,7 @@ static int sd_revalidate_disk(struct gendisk *disk)
         if (!scsi_device_online(sdp))
                 goto out;
 
-        buffer = kmalloc(512, GFP_KERNEL | __GFP_DMA);
+        buffer = kmalloc(SD_BUF_SIZE, GFP_KERNEL | __GFP_DMA);
         if (!buffer) {
                 printk(KERN_WARNING "(sd_revalidate_disk:) Memory allocation "
                        "failure.\n");
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 2a547538d444..5a0a19322d01 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -2162,7 +2162,7 @@ sg_link_reserve(Sg_fd * sfp, Sg_request * srp, int size)
 
         srp->res_used = 1;
         SCSI_LOG_TIMEOUT(4, printk("sg_link_reserve: size=%d\n", size));
-        rem = size = (size + 1) & (~1); /* round to even for aha1542 */
+        rem = size;
 
         for (k = 0; k < rsv_schp->k_use_sg; ++k, ++sg) {
                 num = sg->length;
diff --git a/drivers/scsi/sym53c8xx_2/sym_hipd.c b/drivers/scsi/sym53c8xx_2/sym_hipd.c
index f4854c33f48d..2627000ca653 100644
--- a/drivers/scsi/sym53c8xx_2/sym_hipd.c
+++ b/drivers/scsi/sym53c8xx_2/sym_hipd.c
@@ -919,6 +919,8 @@ static int sym_prepare_setting(struct Scsi_Host *shost, struct sym_hcb *np, stru
 
                 tp->usrflags |= (SYM_DISC_ENABLED | SYM_TAGS_ENABLED);
                 tp->usrtags = SYM_SETUP_MAX_TAG;
+                tp->usr_width = np->maxwide;
+                tp->usr_period = 9;
 
                 sym_nvram_setup_target(tp, i, nvram);