9 files changed, 57 insertions, 35 deletions

diff --git a/drivers/scsi/bfa/bfad_fwimg.c b/drivers/scsi/bfa/bfad_fwimg.c
index b2f6949bc8d3..bd34b0db2d6b 100644
--- a/drivers/scsi/bfa/bfad_fwimg.c
+++ b/drivers/scsi/bfa/bfad_fwimg.c
@@ -41,6 +41,8 @@ u32 *bfi_image_cb;
 
 #define BFAD_FW_FILE_CT "ctfw.bin"
 #define BFAD_FW_FILE_CB "cbfw.bin"
+MODULE_FIRMWARE(BFAD_FW_FILE_CT);
+MODULE_FIRMWARE(BFAD_FW_FILE_CB);
 
 u32 *
 bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
diff --git a/drivers/scsi/bfa/bfad_im.c b/drivers/scsi/bfa/bfad_im.c
index 158c99243c08..55d012a9a668 100644
--- a/drivers/scsi/bfa/bfad_im.c
+++ b/drivers/scsi/bfa/bfad_im.c
@@ -948,7 +948,7 @@ bfad_os_fc_host_init(struct bfad_im_port_s *im_port)
         if (bfad_supported_fc4s & (BFA_PORT_ROLE_FCP_IM | BFA_PORT_ROLE_FCP_TM))
                 /* For FCP type 0x08 */
                 fc_host_supported_fc4s(host)[2] = 1;
-        if (bfad_supported_fc4s | BFA_PORT_ROLE_FCP_IPFC)
+        if (bfad_supported_fc4s & BFA_PORT_ROLE_FCP_IPFC)
                 /* For LLC/SNAP type 0x05 */
                 fc_host_supported_fc4s(host)[3] = 0x20;
         /* For fibre channel services type 0x20 */
diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index 185e6bc4dd40..9e8fce0f0c1b 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -2900,7 +2900,7 @@ static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
         eindex = handle;
     estr->event_source = 0;
 
-    if (eindex >= MAX_EVENTS) {
+    if (eindex < 0 || eindex >= MAX_EVENTS) {
         spin_unlock_irqrestore(&ha->smp_lock, flags);
         return eindex;
     }
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 5f045505a1f4..76d294fc7846 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -4189,6 +4189,25 @@ static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
 }
 
 /**
+ * ipr_isr_eh - Interrupt service routine error handler
+ * @ioa_cfg:    ioa config struct
+ * @msg:        message to log
+ *
+ * Return value:
+ *      none
+ **/
+static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg)
+{
+        ioa_cfg->errors_logged++;
+        dev_err(&ioa_cfg->pdev->dev, "%s\n", msg);
+
+        if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
+                ioa_cfg->sdt_state = GET_DUMP;
+
+        ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
+}
+
+/**
  * ipr_isr - Interrupt service routine
  * @irq:        irq number
  * @devp:       pointer to ioa config struct
@@ -4203,6 +4222,7 @@ static irqreturn_t ipr_isr(int irq, void *devp)
         volatile u32 int_reg, int_mask_reg;
         u32 ioasc;
         u16 cmd_index;
+        int num_hrrq = 0;
         struct ipr_cmnd *ipr_cmd;
         irqreturn_t rc = IRQ_NONE;
 
@@ -4233,13 +4253,7 @@ static irqreturn_t ipr_isr(int irq, void *devp)
                                      IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
 
                         if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
-                                ioa_cfg->errors_logged++;
-                                dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
-
-                                if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
-                                        ioa_cfg->sdt_state = GET_DUMP;
-
-                                ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
+                                ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA");
                                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
                                 return IRQ_HANDLED;
                         }
@@ -4266,8 +4280,18 @@ static irqreturn_t ipr_isr(int irq, void *devp)
 
                 if (ipr_cmd != NULL) {
                         /* Clear the PCI interrupt */
-                        writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
-                        int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
+                        do {
+                                writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
+                                int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
+                        } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
+                                        num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
+
+                        if (int_reg & IPR_PCII_HRRQ_UPDATED) {
+                                ipr_isr_eh(ioa_cfg, "Error clearing HRRQ");
+                                spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+                                return IRQ_HANDLED;
+                        }
+
                 } else
                         break;
         }
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 163245a1c3e5..19bbcf39f0c9 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -144,6 +144,7 @@
 #define IPR_IOA_MAX_SECTORS                             32767
 #define IPR_VSET_MAX_SECTORS                            512
 #define IPR_MAX_CDB_LEN                                 16
+#define IPR_MAX_HRRQ_RETRIES                            3
 
 #define IPR_DEFAULT_BUS_WIDTH                           16
 #define IPR_80MBs_SCSI_RATE             ((80 * 10) / (IPR_DEFAULT_BUS_WIDTH / 8))
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index b3381959acce..33cf988c8c8a 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -960,7 +960,6 @@ static int sas_ex_discover_dev(struct domain_device *dev, int phy_id)
 
                         }
                 }
-                res = 0;
         }
 
         return res;
diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index f7c70e2a8224..0a97bc9074bb 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -1071,7 +1071,7 @@ static struct pmcraid_cmd *pmcraid_init_hcam
 
         ioarcb->data_transfer_length = cpu_to_le32(rcb_size);
 
-        ioadl[0].flags |= cpu_to_le32(IOADL_FLAGS_READ_LAST);
+        ioadl[0].flags |= IOADL_FLAGS_READ_LAST;
         ioadl[0].data_len = cpu_to_le32(rcb_size);
         ioadl[0].address = cpu_to_le32(dma);
 
@@ -2251,7 +2251,7 @@ static void pmcraid_request_sense(struct pmcraid_cmd *cmd)
 
         ioadl->address = cpu_to_le64(cmd->sense_buffer_dma);
         ioadl->data_len = cpu_to_le32(SCSI_SENSE_BUFFERSIZE);
-        ioadl->flags = cpu_to_le32(IOADL_FLAGS_LAST_DESC);
+        ioadl->flags = IOADL_FLAGS_LAST_DESC;
 
         /* request sense might be called as part of error response processing
          * which runs in tasklets context. It is possible that mid-layer might
@@ -3017,7 +3017,7 @@ static int pmcraid_build_ioadl(
                 ioadl[i].flags = 0;
         }
         /* setup last descriptor */
-        ioadl[i - 1].flags = cpu_to_le32(IOADL_FLAGS_LAST_DESC);
+        ioadl[i - 1].flags = IOADL_FLAGS_LAST_DESC;
 
         return 0;
 }
@@ -3387,7 +3387,7 @@ static int pmcraid_build_passthrough_ioadls(
         }
 
         /* setup the last descriptor */
-        ioadl[i - 1].flags = cpu_to_le32(IOADL_FLAGS_LAST_DESC);
+        ioadl[i - 1].flags = IOADL_FLAGS_LAST_DESC;
 
         return 0;
 }
@@ -5314,7 +5314,7 @@ static void pmcraid_querycfg(struct pmcraid_cmd *cmd)
                 cpu_to_le32(sizeof(struct pmcraid_config_table));
 
         ioadl = &(ioarcb->add_data.u.ioadl[0]);
-        ioadl->flags = cpu_to_le32(IOADL_FLAGS_LAST_DESC);
+        ioadl->flags = IOADL_FLAGS_LAST_DESC;
         ioadl->address = cpu_to_le64(pinstance->cfg_table_bus_addr);
         ioadl->data_len = cpu_to_le32(sizeof(struct pmcraid_config_table));
 
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index a67fed10598a..c6f70dae9b2e 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -3656,6 +3656,7 @@ fc_bsg_host_dispatch(struct request_queue *q, struct Scsi_Host *shost,
 fail_host_msg:
         /* return the errno failure code as the only status */
         BUG_ON(job->reply_len < sizeof(uint32_t));
+        job->reply->reply_payload_rcv_len = 0;
         job->reply->result = ret;
         job->reply_len = sizeof(uint32_t);
         fc_bsg_jobdone(job);
@@ -3741,6 +3742,7 @@ check_bidi:
 fail_rport_msg:
         /* return the errno failure code as the only status */
         BUG_ON(job->reply_len < sizeof(uint32_t));
+        job->reply->reply_payload_rcv_len = 0;
         job->reply->result = ret;
         job->reply_len = sizeof(uint32_t);
         fc_bsg_jobdone(job);
@@ -3797,6 +3799,7 @@ fc_bsg_request_handler(struct request_queue *q, struct Scsi_Host *shost,
                 /* check if we have the msgcode value at least */
                 if (job->request_len < sizeof(uint32_t)) {
                         BUG_ON(job->reply_len < sizeof(uint32_t));
+                        job->reply->reply_payload_rcv_len = 0;
                         job->reply->result = -ENOMSG;
                         job->reply_len = sizeof(uint32_t);
                         fc_bsg_jobdone(job);
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 6e728b176904..47941fc5aba7 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -797,30 +797,23 @@ static inline unsigned int scsi_host_get_prot(struct Scsi_Host *shost)
 
 static inline unsigned int scsi_host_dif_capable(struct Scsi_Host *shost, unsigned int target_type)
 {
-        switch (target_type) {
-        case 1:
-                if (shost->prot_capabilities & SHOST_DIF_TYPE1_PROTECTION)
-                        return target_type;
-        case 2:
-                if (shost->prot_capabilities & SHOST_DIF_TYPE2_PROTECTION)
-                        return target_type;
-        case 3:
-                if (shost->prot_capabilities & SHOST_DIF_TYPE3_PROTECTION)
-                        return target_type;
-        }
+        static unsigned char cap[] = { 0,
+                                       SHOST_DIF_TYPE1_PROTECTION,
+                                       SHOST_DIF_TYPE2_PROTECTION,
+                                       SHOST_DIF_TYPE3_PROTECTION };
 
-        return 0;
+        return shost->prot_capabilities & cap[target_type] ? target_type : 0;
 }
 
 static inline unsigned int scsi_host_dix_capable(struct Scsi_Host *shost, unsigned int target_type)
 {
 #if defined(CONFIG_BLK_DEV_INTEGRITY)
-        switch (target_type) {
-        case 0: return shost->prot_capabilities & SHOST_DIX_TYPE0_PROTECTION;
-        case 1: return shost->prot_capabilities & SHOST_DIX_TYPE1_PROTECTION;
-        case 2: return shost->prot_capabilities & SHOST_DIX_TYPE2_PROTECTION;
-        case 3: return shost->prot_capabilities & SHOST_DIX_TYPE3_PROTECTION;
-        }
+        static unsigned char cap[] = { SHOST_DIX_TYPE0_PROTECTION,
+                                       SHOST_DIX_TYPE1_PROTECTION,
+                                       SHOST_DIX_TYPE2_PROTECTION,
+                                       SHOST_DIX_TYPE3_PROTECTION };
+
+        return shost->prot_capabilities & cap[target_type];
 #endif
         return 0;
 }