[PATCH v3 14/14] isci: remove IDEV_EH hack to disable "discovery-time" ata resets

Dan Williams
2012-01-06T01:00:14Z

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.

Cc: Xiangliang Yu <yuxiangl@marvell.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/scsi/isci/remote_device.c | 1 -
drivers/scsi/isci/remote_device.h | 7 +++----
drivers/scsi/isci/task.c | 9 ++++-----
3 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c
index 967394d..f83be32 100644
--- a/drivers/scsi/isci/remote_device.c
+++ b/drivers/scsi/isci/remote_device.c
@@ -1304,7 +1304,6 @@ 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
--- 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 edaba78..fd9f67c 100644
--- 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;
}