If hisi_sas_task_prep() fails for a SATA device due to PHY
down, we return a failure to libata and also call task_done(),
which will cause ata_qc_complete() to be called twice:
- first call from hisi_sas_task_prep(), which will clear flag
ATA_QCFLAG_ACTIVE
- ata_qc_complete() called from libata
The warning call trace is as follows:
[ 117.070206] [<ffff0000084f59b0>] __ata_qc_complete+0xf4/0x11c
[ 117.070208] [<ffff0000084f5b58>] ata_qc_complete+0x180/0x200
[ 117.070210] [<ffff0000084f5dd0>] ata_qc_issue+0x110/0x354
[ 117.070212] [<ffff0000084f6254>] ata_exec_internal_sg+0x240/0x4d0
[ 117.070214] [<ffff0000084f6544>] ata_exec_internal+0x60/0xa0
[ 117.070217] [<ffff000008501580>] ata_read_log_page+0x188/0x1b4
[ 117.070218] [<ffff0000085017dc>] ata_eh_analyze_ncq_error+0xa8/0x274
[ 117.070220] [<ffff000008501a3c>] ata_eh_link_autopsy+0x94/0x8c8
[ 117.070222] [<ffff0000085022a4>] ata_eh_autopsy+0x34/0xe8
[ 117.070223] [<ffff00000850540c>] ata_do_eh+0x28/0xc0
[ 117.070225] [<ffff0000085054e0>] ata_std_error_handler+0x3c/0x84
[ 117.070227] [<ffff000008505140>] ata_scsi_port_error_handler+0x480/0x674
[ 117.070230] [<ffff0000084e3020>] async_sas_ata_eh+0x44/0x78
[ 117.070231] [<ffff0000080d6b8c>] async_run_entry_fn+0x40/0x104
[ 117.070234] [<ffff0000080ce518>] process_one_work+0x128/0x2f0
[ 117.070235] [<ffff0000080ce738>] worker_thread+0x58/0x434
[ 117.070237] [<ffff0000080d416c>] kthread+0xd4/0xe8
[ 117.070240] [<ffff000008084e10>] ret_from_fork+0x10/0x40
The issue is resolved by simply returning a failure status
code to the upper layer.
Signed-off-by: Xiang Chen <chenxian...@hisilicon.com>
Signed-off-by: John Garry <john.ga...@huawei.com>
---
drivers/scsi/hisi_sas/hisi_sas_main.c | 26 ++++++--------------------
1 file changed, 6 insertions(+), 20 deletions(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c
b/drivers/scsi/hisi_sas/hisi_sas_main.c
index dcb17a3..d58e223 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -205,26 +205,12 @@ static int hisi_sas_task_prep(struct sas_task *task,
struct hisi_hba *hisi_hba,
}
port = device->port->lldd_port;
if (port && !port->port_attached) {
- if (sas_protocol_ata(task->task_proto)) {
- struct task_status_struct *ts = &task->task_status;
-
- dev_info(dev,
- "task prep: SATA/STP port%d not attach
device\n",
- device->port->id);
- ts->resp = SAS_TASK_COMPLETE;
- ts->stat = SAS_PHY_DOWN;
- task->task_done(task);
- } else {
- struct task_status_struct *ts = &task->task_status;
-
- dev_info(dev,
- "task prep: SAS port%d does not attach
device\n",
- device->port->id);
- ts->resp = SAS_TASK_UNDELIVERED;
- ts->stat = SAS_PHY_DOWN;
- task->task_done(task);
- }
- return 0;
+ dev_info(dev, "task prep: %s port%d not attach device\n",
+ (sas_protocol_ata(task->task_proto)) ?
+ "SATA/STP" : "SAS",
+ device->port->id);
+
+ return SAS_PHY_DOWN;
}
if (!sas_protocol_ata(task->task_proto)) {
--
1.9.1
