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scsi: pm80xx: Fixed kernel panic during error recovery for SATA drive

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Disabling the SATA drive interface cause kernel panic. When the drive
Interface is disabled, device should be deregistered after aborting all
pending I/Os. Also changed the port recovery timeout to 10000 ms for
PM8006 controller.

Signed-off-by: Deepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Reviewed-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Deepak Ukey 2019-07-09 15:30:48 +05:30 committed by Martin K. Petersen
parent 9b79ee9773
commit 196ba6629c
3 changed files with 8 additions and 2 deletions
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6
drivers/scsi/pm8001/pm8001_sas.c
View File

@ -888,6 +888,8 @@ static void pm8001_dev_gone_notify(struct domain_device *dev)
spin_unlock_irqrestore(&pm8001_ha->lock, flags);
pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
dev, 1, 0);
while (pm8001_dev->running_req)
msleep(20);
spin_lock_irqsave(&pm8001_ha->lock, flags);
}
PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
@ -1256,8 +1258,10 @@ int pm8001_abort_task(struct sas_task *task)
PM8001_MSG_DBG(pm8001_ha,
pm8001_printk("Waiting for Port reset\n"));
wait_for_completion(&completion_reset);
if (phy->port_reset_status)
if (phy->port_reset_status) {
pm8001_dev_gone_notify(dev);
goto out;
}
/*
* 4. SATA Abort ALL

2
drivers/scsi/pm8001/pm80xx_hwi.c
View File

@ -604,7 +604,7 @@ static void update_main_config_table(struct pm8001_hba_info *pm8001_ha)
pm8001_ha->main_cfg_tbl.pm80xx_tbl.port_recovery_timer &=
0x0000ffff;
pm8001_ha->main_cfg_tbl.pm80xx_tbl.port_recovery_timer |=
0x140000;
CHIP_8006_PORT_RECOVERY_TIMEOUT;
}
pm8001_mw32(address, MAIN_PORT_RECOVERY_TIMER,
pm8001_ha->main_cfg_tbl.pm80xx_tbl.port_recovery_timer);

2
drivers/scsi/pm8001/pm80xx_hwi.h
View File

@ -230,6 +230,8 @@
#define SAS_MAX_AIP 0x200000
#define IT_NEXUS_TIMEOUT 0x7D0
#define PORT_RECOVERY_TIMEOUT ((IT_NEXUS_TIMEOUT/100) + 30)
/* Port recovery timeout, 10000 ms for PM8006 controller */
#define CHIP_8006_PORT_RECOVERY_TIMEOUT 0x640000
#ifdef __LITTLE_ENDIAN_BITFIELD
struct sas_identify_frame_local {