From: Ching Huang <ching2...@areca.com.tw>
Handle adapter removed due to thunderbolt cable disconnection.
Signed-off-by: Ching Huang <ching2...@areca.com.tw>
---
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
index 75e828b..2f52c53 100755
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -1446,12 +1446,80 @@ static void arcmsr_done4abort_postqueue(struct
AdapterControlBlock *acb)
}
}
+static void arcmsr_remove_scsi_devices(struct AdapterControlBlock *acb)
+{
+ char *acb_dev_map = (char *)acb->device_map;
+ int target, lun, i;
+ struct scsi_device *psdev;
+ struct CommandControlBlock *ccb;
+ char temp;
+
+ for (i = 0; i < acb->maxFreeCCB; i++) {
+ ccb = acb->pccb_pool[i];
+ if (ccb->startdone == ARCMSR_CCB_START) {
+ ccb->pcmd->result = DID_NO_CONNECT << 16;
+ arcmsr_pci_unmap_dma(ccb);
+ ccb->pcmd->scsi_done(ccb->pcmd);
+ }
+ }
+ for (target = 0; target < ARCMSR_MAX_TARGETID; target++) {
+ temp = *acb_dev_map;
+ if (temp) {
+ for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
+ if (temp & 1) {
+ psdev = scsi_device_lookup(acb->host,
+ 0, target, lun);
+ if (psdev != NULL) {
+ scsi_remove_device(psdev);
+ scsi_device_put(psdev);
+ }
+ }
+ temp >>= 1;
+ }
+ *acb_dev_map = 0;
+ }
+ acb_dev_map++;
+ }
+}
+
+static void arcmsr_free_pcidev(struct AdapterControlBlock *acb)
+{
+ struct pci_dev *pdev;
+ struct Scsi_Host *host;
+
+ host = acb->host;
+ arcmsr_free_sysfs_attr(acb);
+ scsi_remove_host(host);
+ flush_work(&acb->arcmsr_do_message_isr_bh);
+ del_timer_sync(&acb->eternal_timer);
+ if (set_date_time)
+ del_timer_sync(&acb->refresh_timer);
+ pdev = acb->pdev;
+ arcmsr_free_irq(pdev, acb);
+ arcmsr_free_ccb_pool(acb);
+ arcmsr_free_mu(acb);
+ arcmsr_unmap_pciregion(acb);
+ pci_release_regions(pdev);
+ scsi_host_put(host);
+ pci_disable_device(pdev);
+}
+
static void arcmsr_remove(struct pci_dev *pdev)
{
struct Scsi_Host *host = pci_get_drvdata(pdev);
struct AdapterControlBlock *acb =
(struct AdapterControlBlock *) host->hostdata;
int poll_count = 0;
+ uint16_t dev_id;
+
+ pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
+ if (dev_id == 0xffff) {
+ acb->acb_flags &= ~ACB_F_IOP_INITED;
+ acb->acb_flags |= ACB_F_ADAPTER_REMOVED;
+ arcmsr_remove_scsi_devices(acb);
+ arcmsr_free_pcidev(acb);
+ return;
+ }
arcmsr_free_sysfs_attr(acb);
scsi_remove_host(host);
flush_work(&acb->arcmsr_do_message_isr_bh);
@@ -1499,6 +1567,8 @@ static void arcmsr_shutdown(struct pci_dev *pdev)
struct Scsi_Host *host = pci_get_drvdata(pdev);
struct AdapterControlBlock *acb =
(struct AdapterControlBlock *)host->hostdata;
+ if (acb->acb_flags & ACB_F_ADAPTER_REMOVED)
+ return;
del_timer_sync(&acb->eternal_timer);
if (set_date_time)
del_timer_sync(&acb->refresh_timer);
@@ -2931,6 +3001,12 @@ static int arcmsr_queue_command_lck(struct scsi_cmnd
*cmd,
struct AdapterControlBlock *acb = (struct AdapterControlBlock *)
host->hostdata;
struct CommandControlBlock *ccb;
int target = cmd->device->id;
+
+ if (acb->acb_flags & ACB_F_ADAPTER_REMOVED) {
+ cmd->result = (DID_NO_CONNECT << 16);
+ cmd->scsi_done(cmd);
+ return 0;
+ }
cmd->scsi_done = done;
cmd->host_scribble = NULL;
cmd->result = 0;
@@ -4177,6 +4253,8 @@ static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
int retry_count = 0;
int rtn = FAILED;
acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
+ if (acb->acb_flags & ACB_F_ADAPTER_REMOVED)
+ return SUCCESS;
pr_notice("arcmsr: executing bus reset eh.....num_resets = %d,"
" num_aborts = %d \n", acb->num_resets, acb->num_aborts);
acb->num_resets++;
@@ -4243,6 +4321,8 @@ static int arcmsr_abort(struct scsi_cmnd *cmd)
int rtn = FAILED;
uint32_t intmask_org;
+ if (acb->acb_flags & ACB_F_ADAPTER_REMOVED)
+ return SUCCESS;
printk(KERN_NOTICE
"arcmsr%d: abort device command of scsi id = %d lun = %d\n",
acb->host->host_no, cmd->device->id, (u32)cmd->device->lun);
