From: Yihang Li <liyihang9@xxxxxxxxxx>
In function hisi_sas_controller_prereset(), -ENOSYS (Function not
implemented) should be returned if the driver does not support .soft_reset.
Returns -EPERM (Operation not permitted) if HISI_SAS_RESETTING_BIT is
already be set.
In function _suspend_v3_hw(), returns -EPERM (Operation not permitted) if
HISI_SAS_RESETTING_BIT is already be set.
Fixes: 4522204ab218 ("scsi: hisi_sas: tidy host controller reset function a bit")
Signed-off-by: Yihang Li <liyihang9@xxxxxxxxxx>
Signed-off-by: Xiang Chen <chenxiang66@xxxxxxxxxxxxx>
---
drivers/scsi/hisi_sas/hisi_sas_main.c | 4 ++--
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index d50058b..1601706 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -1565,12 +1565,12 @@ EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done);
static int hisi_sas_controller_prereset(struct hisi_hba *hisi_hba)
{
if (!hisi_hba->hw->soft_reset)
- return -1;
+ return -ENOENT;
down(&hisi_hba->sem);
if (test_and_set_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags)) {
up(&hisi_hba->sem);
- return -1;
+ return -EPERM;
}
if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index f3eb5cd..af2cc08 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -5018,7 +5018,7 @@ static int _suspend_v3_hw(struct device *device)
}
if (test_and_set_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags))
- return -1;
+ return -EPERM;
dev_warn(dev, "entering suspend state\n");
--
2.8.1
