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scsi: hisi_sas: remove the check of sas_dev status in hisi_sas_I_T_nexus_reset() 

When issing a hardreset to a SATA device when running IO, it is possible
that abnormal CQs of the device are returned. Then enter error handler, it
doesn't enter function hisi_sas_abort_task() as there is no timeout IO, and
it doesn't set device as HISI_SAS_DEV_EH. So when hardreset by libata
later, it actually doesn't issue hardreset as there is a check to judge
whether device is in error.

For this situation, actually need to hardreset the device to recover.
So remove the check of sas_dev status in hisi_sas_I_T_nexus_reset().

Before we add the check to avoid the endless loop of reset for
directly-attached SATA device at probe time, actually we flutter it for
it, so it is not necessary to add the check now.

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Xiang Chen 2019-01-25 22:22:32 +08:00 committed by Martin K. Petersen
parent 5c31b0c677
commit ffb1c820b8
3 changed files with 0 additions and 16 deletions
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6
drivers/scsi/hisi_sas/hisi_sas.h
View File

@ -83,11 +83,6 @@ enum {
PORT_TYPE_SATA = (1U << 0),
};
enum dev_status {
HISI_SAS_DEV_NORMAL,
HISI_SAS_DEV_EH,
};
enum {
HISI_SAS_INT_ABT_CMD = 0,
HISI_SAS_INT_ABT_DEV = 1,
@ -188,7 +183,6 @@ struct hisi_sas_device {
enum sas_device_type dev_type;
int device_id;
int sata_idx;
u8 dev_status;
};
struct hisi_sas_tmf_task {

9
drivers/scsi/hisi_sas/hisi_sas_main.c
View File

@ -626,7 +626,6 @@ static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
hisi_hba->devices[i].device_id = i;
sas_dev = &hisi_hba->devices[i];
sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
sas_dev->dev_type = device->dev_type;
sas_dev->hisi_hba = hisi_hba;
sas_dev->sas_device = device;
@ -1495,7 +1494,6 @@ static int hisi_sas_abort_task(struct sas_task *task)
task->task_state_flags |= SAS_TASK_STATE_ABORTED;
spin_unlock_irqrestore(&task->task_state_lock, flags);
sas_dev->dev_status = HISI_SAS_DEV_EH;
if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
struct scsi_cmnd *cmnd = task->uldd_task;
struct hisi_sas_slot *slot = task->lldd_task;
@ -1639,15 +1637,10 @@ static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
{
struct hisi_sas_device *sas_dev = device->lldd_dev;
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
struct device *dev = hisi_hba->dev;
int rc = TMF_RESP_FUNC_FAILED;
if (sas_dev->dev_status != HISI_SAS_DEV_EH)
return TMF_RESP_FUNC_FAILED;
sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
rc = hisi_sas_internal_task_abort(hisi_hba, device,
HISI_SAS_INT_ABT_DEV, 0);
if (rc < 0) {
@ -1671,7 +1664,6 @@ static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
struct device *dev = hisi_hba->dev;
int rc = TMF_RESP_FUNC_FAILED;
sas_dev->dev_status = HISI_SAS_DEV_EH;
if (dev_is_sata(device)) {
struct sas_phy *phy;
@ -2100,7 +2092,6 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
hisi_hba->devices[i].device_id = i;
hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL;
}
for (i = 0; i < hisi_hba->queue_count; i++) {

1
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
View File

@ -868,7 +868,6 @@ hisi_sas_device *alloc_dev_quirk_v2_hw(struct domain_device *device)
hisi_hba->devices[i].device_id = i;
sas_dev = &hisi_hba->devices[i];
sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
sas_dev->dev_type = device->dev_type;
sas_dev->hisi_hba = hisi_hba;
sas_dev->sas_device = device;