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Subject[PATCH] scsi: hisi_sas: Add softreset in hisi_sas_I_T_nexus_reset()
From: Luo Jiaxing <>

We found out that for v2 hw, a SATA disk can not be written to after
the system comes up.

In commit ffb1c820b8b6 ("scsi: hisi_sas: remove the check of sas_dev
status in hisi_sas_I_T_nexus_reset()"), we introduced a path where we may
issue an internal abort for a SATA device, but without following it with a

We need to always follow an internal abort with a software reset, as per HW
programming flow, so add this.

Fixes: ffb1c820b8b6 ("scsi: hisi_sas: remove the check of sas_dev status in hisi_sas_I_T_nexus_reset()")
Signed-off-by: Luo Jiaxing <>
Signed-off-by: John Garry <>

Hi James, Martin,

Please consider this patch for 5.1 fixes. It's fixes a big regression,
where we can no longer access SATA disks, like here:


diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 3c3cf89f713f..14bac4966c87 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -1801,6 +1801,12 @@ static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
hisi_sas_dereg_device(hisi_hba, device);

+ if (dev_is_sata(device)) {
+ rc = hisi_sas_softreset_ata_disk(device);
+ if (rc)
+ }
rc = hisi_sas_debug_I_T_nexus_reset(device);

if ((rc == TMF_RESP_FUNC_COMPLETE) || (rc == -ENODEV))
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