xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

scsi: pm80xx: Fixed system hang issue during kexec boot

Browse Source 
When the firmware is not responding, execution of kexec boot causes a system
hang. When firmware assertion happened, driver get notified with interrupt
vector updated in MPI configuration table. Then, the driver will read
scratchpad register and set controller_fatal_error flag to true.

Signed-off-by: Deepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Acked-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Deepak Ukey
2018-09-11 14:18:04 +05:30
committed by Martin K. Petersen
parent 76cb25b058
commit 72349b62a5
5 changed files with 91 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/scsi/pm8001/pm8001_sas.c
View File

@@ -396,6 +396,13 @@ static int pm8001_task_exec(struct sas_task *task,
return 0;
}
pm8001_ha = pm8001_find_ha_by_dev(task->dev);
if (pm8001_ha->controller_fatal_error) {
struct task_status_struct *ts = &t->task_status;
ts->resp = SAS_TASK_UNDELIVERED;
t->task_done(t);
return 0;
}
PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n "));
spin_lock_irqsave(&pm8001_ha->lock, flags);
do {