[SCSI] isci: remove IDEV_EH hack to disable "discovery-time" ata resets

Prior to commit 61aaff49 "isci: filter broadcast change notifications
during SMP phy resets" we borrowed the MVS_DEV_EH approach from the
mvsas driver for preventing ->lldd_I_T_nexus_reset() events during ata
discovery.  This hack was protecting against the old ->phy_reset() in
ata_bus_probe(), but since the conversion to the new error handling this
hack is preventing resets from reaching ata devices.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c
index 108238d..934d21e 100644 (file)
--- a/drivers/scsi/isci/remote_device.c
+++ b/drivers/scsi/isci/remote_device.c
@@ -1308,7 +1308,6 @@ void isci_remote_device_release(struct kref *kref)
        clear_bit(IDEV_STOP_PENDING, &idev->flags);
        clear_bit(IDEV_IO_READY, &idev->flags);
        clear_bit(IDEV_GONE, &idev->flags);
-       clear_bit(IDEV_EH, &idev->flags);
        smp_mb__before_clear_bit();
        clear_bit(IDEV_ALLOCATED, &idev->flags);
        wake_up(&ihost->eventq);

diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h
index 483ee50..98c2801 100644 (file)
--- a/drivers/scsi/isci/remote_device.h
+++ b/drivers/scsi/isci/remote_device.h
@@ -82,10 +82,9 @@ struct isci_remote_device {
        #define IDEV_START_PENDING 0
        #define IDEV_STOP_PENDING 1
        #define IDEV_ALLOCATED 2
-       #define IDEV_EH 3
-       #define IDEV_GONE 4
-       #define IDEV_IO_READY 5
-       #define IDEV_IO_NCQERROR 6
+       #define IDEV_GONE 3
+       #define IDEV_IO_READY 4
+       #define IDEV_IO_NCQERROR 5
        unsigned long flags;
        struct kref kref;
        struct isci_port *isci_port;

diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c
index 5306979..374254e 100644 (file)
--- a/drivers/scsi/isci/task.c
+++ b/drivers/scsi/isci/task.c
@@ -846,7 +846,6 @@ int isci_task_lu_reset(struct domain_device *dev, u8 *lun)
                ret = TMF_RESP_FUNC_COMPLETE;
                goto out;
        }
-       set_bit(IDEV_EH, &isci_device->flags);
 
        /* Send the task management part of the reset. */
        if (dev_is_sata(dev)) {
@@ -981,9 +980,6 @@ int isci_task_abort_task(struct sas_task *task)
                "%s: dev = %p, task = %p, old_request == %p\n",
                __func__, isci_device, task, old_request);
 
-       if (isci_device)
-               set_bit(IDEV_EH, &isci_device->flags);
-
        /* Device reset conditions signalled in task_state_flags are the
         * responsbility of libsas to observe at the start of the error
         * handler thread.
@@ -1312,7 +1308,10 @@ int isci_task_I_T_nexus_reset(struct domain_device *dev)
        idev = isci_lookup_device(dev);
        spin_unlock_irqrestore(&ihost->scic_lock, flags);
 
-       if (!idev || !test_bit(IDEV_EH, &idev->flags)) {
+       if (!idev) {
+               /* XXX: need to cleanup any ireqs targeting this
+                * domain_device
+                */
                ret = TMF_RESP_FUNC_COMPLETE;
                goto out;
        }