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| author | John Garry <john.garry@huawei.com> | 2016-09-06 15:36:18 (GMT) |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-09-14 16:54:17 (GMT) |
| commit | 09fe9ecb18a7add9b05928151998692d96338e41 (patch) | |
| tree | 80b87dd3de81ee22eeeadc771e48a5323d300ed0 | |
| parent | 85bd6cf3be44602a85714ca61442c3b0666dbb62 (diff) | |
| download | linux-09fe9ecb18a7add9b05928151998692d96338e41.tar.xz | |
scsi: hisi_sas: fix a potential warning for sata disk ejection
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 <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas_main.c | 26 |
1 files 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)) { |