[PATCH AUTOSEL 5.4 011/130] scsi: pm80xx: Make running_req atomic

From: Sasha Levin
Date: Tue Dec 22 2020 - 21:19:50 EST

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From: Viswas G <Viswas.G@xxxxxxxxxxxxx>

[ Upstream commit 4a2efd4b89fcaa6e9a7b4ce49a441afaacba00ea ]

Incorrect value of the running_req was causing the driver unload to be
stuck during the SAS lldd_dev_gone notification handling. During SATA I/O
completion, for some error status values, the driver schedules the event
handler and running_req is decremented from that. However, there are some
other error status values (like IO_DS_IN_RECOVERY,
IO_XFER_ERR_LAST_PIO_DATAIN_CRC_ERR) where the I/O has already been
completed by fw/driver so running_req is not decremented.

Also during NCQ error handling, driver itself will initiate READ_LOG_EXT
and ABORT_ALL. When libsas/libata initiate READ_LOG_EXT (0x2F), driver
increments running_req. This will be completed by the driver in
pm80xx_chip_sata_req(), but running_req was not decremented.

Link: https://lore.kernel.org/r/20201102165528.26510-3-Viswas.G@xxxxxxxxxxxxxxxxx
Acked-by: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxx>
Signed-off-by: Viswas G <Viswas.G@xxxxxxxxxxxxx>
Signed-off-by: Ruksar Devadi <Ruksar.devadi@xxxxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/scsi/pm8001/pm8001_hwi.c | 58 +++++++++++++----
drivers/scsi/pm8001/pm8001_init.c | 2 +-
drivers/scsi/pm8001/pm8001_sas.c | 11 ++--
drivers/scsi/pm8001/pm8001_sas.h | 2 +-
drivers/scsi/pm8001/pm80xx_hwi.c | 101 +++++++++++++++++++++++++++---
5 files changed, 147 insertions(+), 27 deletions(-)

diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index 68a8217032d0f..f8e11f672d1e2 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -1558,7 +1558,7 @@ void pm8001_work_fn(struct work_struct *work)
ts->stat = SAS_QUEUE_FULL;
pm8001_dev = ccb->device;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
spin_lock_irqsave(&t->task_state_lock, flags1);
t->task_state_flags &= ~SAS_TASK_STATE_PENDING;
t->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
@@ -1905,7 +1905,7 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
sas_ssp_task_response(pm8001_ha->dev, t, iu);
}
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_ABORTED:
PM8001_IO_DBG(pm8001_ha,
@@ -1921,7 +1921,7 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->stat = SAS_DATA_UNDERRUN;
ts->residual = param;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_NO_DEVICE:
PM8001_IO_DBG(pm8001_ha,
@@ -2135,7 +2135,7 @@ static void mpi_ssp_event(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->stat = SAS_DATA_OVERRUN;
ts->residual = 0;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_BREAK:
PM8001_IO_DBG(pm8001_ha,
@@ -2444,7 +2444,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
pm8001_printk("response to large\n"));
}
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_ABORTED:
PM8001_IO_DBG(pm8001_ha,
@@ -2452,7 +2452,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_ABORTED_TASK;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
/* following cases are to do cases */
case IO_UNDERFLOW:
@@ -2463,19 +2463,23 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->stat = SAS_DATA_UNDERRUN;
ts->residual = param;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_NO_DEVICE:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_NO_DEVICE\n"));
ts->resp = SAS_TASK_UNDELIVERED;
ts->stat = SAS_PHY_DOWN;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_BREAK:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_BREAK\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_INTERRUPTED;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_PHY_NOT_READY:
PM8001_IO_DBG(pm8001_ha,
@@ -2483,6 +2487,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_PROTOCOL_NOT_SUPPORTED:
PM8001_IO_DBG(pm8001_ha,
@@ -2491,6 +2497,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_EPROTO;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_ZONE_VIOLATION:
PM8001_IO_DBG(pm8001_ha,
@@ -2498,6 +2506,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_UNKNOWN;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_BREAK:
PM8001_IO_DBG(pm8001_ha,
@@ -2505,6 +2515,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_CONT0;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS:
PM8001_IO_DBG(pm8001_ha,
@@ -2544,6 +2556,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_CONN_RATE;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_STP_RESOURCES_BUSY:
PM8001_IO_DBG(pm8001_ha,
@@ -2567,48 +2581,64 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_WRONG_DEST;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_NAK_RECEIVED:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_NAK_RECEIVED\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_NAK_R_ERR;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_ACK_NAK_TIMEOUT:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_ACK_NAK_TIMEOUT\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_NAK_R_ERR;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_DMA:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_DMA\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_ABORTED_TASK;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_SATA_LINK_TIMEOUT:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_SATA_LINK_TIMEOUT\n"));
ts->resp = SAS_TASK_UNDELIVERED;
ts->stat = SAS_DEV_NO_RESPONSE;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_REJECTED_NCQ_MODE:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_REJECTED_NCQ_MODE\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_DATA_UNDERRUN;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_OPEN_RETRY_TIMEOUT:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_OPEN_RETRY_TIMEOUT\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_TO;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_PORT_IN_RESET:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_PORT_IN_RESET\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_DEV_NO_RESPONSE;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_DS_NON_OPERATIONAL:
PM8001_IO_DBG(pm8001_ha,
@@ -2629,6 +2659,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
pm8001_printk(" IO_DS_IN_RECOVERY\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_DEV_NO_RESPONSE;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_DS_IN_ERROR:
PM8001_IO_DBG(pm8001_ha,
@@ -2650,6 +2682,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
default:
PM8001_IO_DBG(pm8001_ha,
@@ -2657,6 +2691,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
/* not allowed case. Therefore, return failed status */
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_DEV_NO_RESPONSE;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
}
spin_lock_irqsave(&t->task_state_lock, flags);
@@ -2733,7 +2769,7 @@ static void mpi_sata_event(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->stat = SAS_DATA_OVERRUN;
ts->residual = 0;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_BREAK:
PM8001_IO_DBG(pm8001_ha,
@@ -2929,7 +2965,7 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAM_STAT_GOOD;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_ABORTED:
PM8001_IO_DBG(pm8001_ha,
@@ -2937,7 +2973,7 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_ABORTED_TASK;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OVERFLOW:
PM8001_IO_DBG(pm8001_ha, pm8001_printk("IO_UNDERFLOW\n"));
@@ -2945,7 +2981,7 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->stat = SAS_DATA_OVERRUN;
ts->residual = 0;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_NO_DEVICE:
PM8001_IO_DBG(pm8001_ha, pm8001_printk("IO_NO_DEVICE\n"));
diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index 3374f553c617a..1fa9d68255686 100644
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -368,7 +368,7 @@ static int pm8001_alloc(struct pm8001_hba_info *pm8001_ha,
pm8001_ha->devices[i].dev_type = SAS_PHY_UNUSED;
pm8001_ha->devices[i].id = i;
pm8001_ha->devices[i].device_id = PM8001_MAX_DEVICES;
- pm8001_ha->devices[i].running_req = 0;
+ atomic_set(&pm8001_ha->devices[i].running_req, 0);
}
pm8001_ha->ccb_info = pm8001_ha->memoryMap.region[CCB_MEM].virt_ptr;
for (i = 0; i < PM8001_MAX_CCB; i++) {
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index 36f5bab09f73e..4d3015d49c872 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -454,9 +454,11 @@ static int pm8001_task_exec(struct sas_task *task,
ccb->device = pm8001_dev;
switch (t->task_proto) {
case SAS_PROTOCOL_SMP:
+ atomic_inc(&pm8001_dev->running_req);
rc = pm8001_task_prep_smp(pm8001_ha, ccb);
break;
case SAS_PROTOCOL_SSP:
+ atomic_inc(&pm8001_dev->running_req);
if (is_tmf)
rc = pm8001_task_prep_ssp_tm(pm8001_ha,
ccb, tmf);
@@ -465,6 +467,7 @@ static int pm8001_task_exec(struct sas_task *task,
break;
case SAS_PROTOCOL_SATA:
case SAS_PROTOCOL_STP:
+ atomic_inc(&pm8001_dev->running_req);
rc = pm8001_task_prep_ata(pm8001_ha, ccb);
break;
default:
@@ -478,13 +481,13 @@ static int pm8001_task_exec(struct sas_task *task,
if (rc) {
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("rc is %x\n", rc));
+ atomic_dec(&pm8001_dev->running_req);
goto err_out_tag;
}
/* TODO: select normal or high priority */
spin_lock(&t->task_state_lock);
t->task_state_flags |= SAS_TASK_AT_INITIATOR;
spin_unlock(&t->task_state_lock);
- pm8001_dev->running_req++;
} while (0);
rc = 0;
goto out_done;
@@ -884,11 +887,11 @@ static void pm8001_dev_gone_notify(struct domain_device *dev)
PM8001_DISC_DBG(pm8001_ha,
pm8001_printk("found dev[%d:%x] is gone.\n",
pm8001_dev->device_id, pm8001_dev->dev_type));
- if (pm8001_dev->running_req) {
+ if (atomic_read(&pm8001_dev->running_req)) {
spin_unlock_irqrestore(&pm8001_ha->lock, flags);
pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
dev, 1, 0);
- while (pm8001_dev->running_req)
+ while (atomic_read(&pm8001_dev->running_req))
msleep(20);
spin_lock_irqsave(&pm8001_ha->lock, flags);
}
@@ -966,7 +969,7 @@ void pm8001_open_reject_retry(
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
spin_lock_irqsave(&task->task_state_lock, flags1);
task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h
index ff17c6aff63dc..161a12f884ad3 100644
--- a/drivers/scsi/pm8001/pm8001_sas.h
+++ b/drivers/scsi/pm8001/pm8001_sas.h
@@ -279,7 +279,7 @@ struct pm8001_device {
struct completion *dcompletion;
struct completion *setds_completion;
u32 device_id;
- u32 running_req;
+ atomic_t running_req;
};

struct pm8001_prd_imt {
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index 161bf4760eac7..8756bbf2c3896 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -1593,13 +1593,15 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
sas_ssp_task_response(pm8001_ha->dev, t, iu);
}
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_ABORTED:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_ABORTED IOMB Tag\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_ABORTED_TASK;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_UNDERFLOW:
/* SSP Completion with error */
@@ -1610,13 +1612,15 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->stat = SAS_DATA_UNDERRUN;
ts->residual = param;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_NO_DEVICE:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_NO_DEVICE\n"));
ts->resp = SAS_TASK_UNDELIVERED;
ts->stat = SAS_PHY_DOWN;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_BREAK:
PM8001_IO_DBG(pm8001_ha,
@@ -1625,6 +1629,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->stat = SAS_OPEN_REJECT;
/* Force the midlayer to retry */
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_PHY_NOT_READY:
PM8001_IO_DBG(pm8001_ha,
@@ -1632,6 +1638,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_INVALID_SSP_RSP_FRAME:
PM8001_IO_DBG(pm8001_ha,
@@ -1639,6 +1647,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_PROTOCOL_NOT_SUPPORTED:
PM8001_IO_DBG(pm8001_ha,
@@ -1646,6 +1656,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_EPROTO;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_ZONE_VIOLATION:
PM8001_IO_DBG(pm8001_ha,
@@ -1653,6 +1665,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_UNKNOWN;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_BREAK:
PM8001_IO_DBG(pm8001_ha,
@@ -1660,6 +1674,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS:
case IO_XFER_OPEN_RETRY_BACKOFF_THRESHOLD_REACHED:
@@ -1683,6 +1699,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_BAD_DEST;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_CONNECTION_RATE_NOT_SUPPORTED:
PM8001_IO_DBG(pm8001_ha, pm8001_printk(
@@ -1690,6 +1708,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_CONN_RATE;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_WRONG_DESTINATION:
PM8001_IO_DBG(pm8001_ha,
@@ -1697,6 +1717,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->resp = SAS_TASK_UNDELIVERED;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_WRONG_DEST;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_NAK_RECEIVED:
PM8001_IO_DBG(pm8001_ha,
@@ -1704,18 +1726,24 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_ACK_NAK_TIMEOUT:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_ACK_NAK_TIMEOUT\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_NAK_R_ERR;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_DMA:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_DMA\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_OPEN_RETRY_TIMEOUT:
PM8001_IO_DBG(pm8001_ha,
@@ -1723,18 +1751,24 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_OFFSET_MISMATCH:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_OFFSET_MISMATCH\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_PORT_IN_RESET:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_PORT_IN_RESET\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_DS_NON_OPERATIONAL:
PM8001_IO_DBG(pm8001_ha,
@@ -1751,18 +1785,24 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
pm8001_printk("IO_DS_IN_RECOVERY\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_TM_TAG_NOT_FOUND:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_TM_TAG_NOT_FOUND\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_SSP_EXT_IU_ZERO_LEN_ERROR:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_SSP_EXT_IU_ZERO_LEN_ERROR\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_HW_RESOURCE_BUSY:
PM8001_IO_DBG(pm8001_ha,
@@ -1770,6 +1810,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
default:
PM8001_IO_DBG(pm8001_ha,
@@ -1777,6 +1819,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
/* not allowed case. Therefore, return failed status */
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
}
PM8001_IO_DBG(pm8001_ha,
@@ -1836,7 +1880,7 @@ static void mpi_ssp_event(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->stat = SAS_DATA_OVERRUN;
ts->residual = 0;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_BREAK:
PM8001_IO_DBG(pm8001_ha,
@@ -2155,7 +2199,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
pm8001_printk("response to large\n"));
}
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_ABORTED:
PM8001_IO_DBG(pm8001_ha,
@@ -2163,7 +2207,7 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_ABORTED_TASK;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
/* following cases are to do cases */
case IO_UNDERFLOW:
@@ -2174,19 +2218,23 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->stat = SAS_DATA_UNDERRUN;
ts->residual = param;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_NO_DEVICE:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_NO_DEVICE\n"));
ts->resp = SAS_TASK_UNDELIVERED;
ts->stat = SAS_PHY_DOWN;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_BREAK:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_BREAK\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_INTERRUPTED;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_PHY_NOT_READY:
PM8001_IO_DBG(pm8001_ha,
@@ -2194,6 +2242,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_PROTOCOL_NOT_SUPPORTED:
PM8001_IO_DBG(pm8001_ha, pm8001_printk(
@@ -2201,6 +2251,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_EPROTO;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_ZONE_VIOLATION:
PM8001_IO_DBG(pm8001_ha,
@@ -2208,6 +2260,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_UNKNOWN;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_BREAK:
PM8001_IO_DBG(pm8001_ha,
@@ -2215,6 +2269,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_CONT0;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS:
case IO_XFER_OPEN_RETRY_BACKOFF_THRESHOLD_REACHED:
@@ -2258,6 +2314,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_CONN_RATE;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OPEN_CNX_ERROR_STP_RESOURCES_BUSY:
PM8001_IO_DBG(pm8001_ha, pm8001_printk(
@@ -2280,48 +2338,64 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_WRONG_DEST;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_NAK_RECEIVED:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_NAK_RECEIVED\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_NAK_R_ERR;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_ACK_NAK_TIMEOUT:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_ACK_NAK_TIMEOUT\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_NAK_R_ERR;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_DMA:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_DMA\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_ABORTED_TASK;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_SATA_LINK_TIMEOUT:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_SATA_LINK_TIMEOUT\n"));
ts->resp = SAS_TASK_UNDELIVERED;
ts->stat = SAS_DEV_NO_RESPONSE;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_REJECTED_NCQ_MODE:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_REJECTED_NCQ_MODE\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_DATA_UNDERRUN;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_OPEN_RETRY_TIMEOUT:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_OPEN_RETRY_TIMEOUT\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_TO;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_PORT_IN_RESET:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_PORT_IN_RESET\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_DEV_NO_RESPONSE;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_DS_NON_OPERATIONAL:
PM8001_IO_DBG(pm8001_ha,
@@ -2342,6 +2416,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
pm8001_printk("IO_DS_IN_RECOVERY\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_DEV_NO_RESPONSE;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_DS_IN_ERROR:
PM8001_IO_DBG(pm8001_ha,
@@ -2363,6 +2439,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
default:
PM8001_IO_DBG(pm8001_ha,
@@ -2370,6 +2448,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
/* not allowed case. Therefore, return failed status */
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_DEV_NO_RESPONSE;
+ if (pm8001_dev)
+ atomic_dec(&pm8001_dev->running_req);
break;
}
spin_lock_irqsave(&t->task_state_lock, flags);
@@ -2447,7 +2527,7 @@ static void mpi_sata_event(struct pm8001_hba_info *pm8001_ha , void *piomb)
ts->stat = SAS_DATA_OVERRUN;
ts->residual = 0;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_XFER_ERROR_BREAK:
PM8001_IO_DBG(pm8001_ha,
@@ -2664,7 +2744,7 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAM_STAT_GOOD;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
if (pm8001_ha->smp_exp_mode == SMP_DIRECT) {
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("DIRECT RESPONSE Length:%d\n",
@@ -2687,7 +2767,7 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_ABORTED_TASK;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_OVERFLOW:
PM8001_IO_DBG(pm8001_ha, pm8001_printk("IO_UNDERFLOW\n"));
@@ -2695,7 +2775,7 @@ mpi_smp_completion(struct pm8001_hba_info *pm8001_ha, void *piomb)
ts->stat = SAS_DATA_OVERRUN;
ts->residual = 0;
if (pm8001_dev)
- pm8001_dev->running_req--;
+ atomic_dec(&pm8001_dev->running_req);
break;
case IO_NO_DEVICE:
PM8001_IO_DBG(pm8001_ha, pm8001_printk("IO_NO_DEVICE\n"));
@@ -4437,6 +4517,7 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
flags);
pm8001_ccb_task_free_done(pm8001_ha, task,
ccb, tag);
+ atomic_dec(&pm8001_ha_dev->running_req);
return 0;
}
}
--
2.27.0

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