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| author |   Xiang Chen <chenxiang66@hisilicon.com> | 2022-07-15 02:23:22 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2022-07-18 23:04:12 -0400 |
| commit | 1e82e4627a795aa33af0309c8f526df09abad188 (patch) | |
| tree | 13e122799b2bca4a23a134b4a6da35a5dad2efc6 | |
| parent | scsi: hisi_sas: Modify v3 HW SATA completion error processing (diff) | |
| download | linux-dev-1e82e4627a795aa33af0309c8f526df09abad188.tar.xz linux-dev-1e82e4627a795aa33af0309c8f526df09abad188.zip | |
scsi: libsas: Resume SAS host for phy reset or enable via sysfs
Currently if a phy reset or enable phy is issued via sysfs when controller
is suspended, those operations will be ignored as SAS_HA_REGISTERED is
cleared. If RPM is enabled then we may aggressively suspend automatically.
In this case it may be difficult to enable or reset a phy via sysfs, so
resume the host in these scenarios.
Link: https://lore.kernel.org/r/1657823002-139010-6-git-send-email-john.garry@huawei.com
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/libsas/sas_init.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c index dc35f0f8eae3..e4f77072a58d 100644 --- a/drivers/scsi/libsas/sas_init.c +++ b/drivers/scsi/libsas/sas_init.c @@ -531,6 +531,7 @@ static int queue_phy_reset(struct sas_phy *phy, int hard_reset) if (!d) return -ENOMEM; + pm_runtime_get_sync(ha->dev); /* libsas workqueue coordinates ata-eh reset with discovery */ mutex_lock(&d->event_lock); d->reset_result = 0; @@ -544,6 +545,7 @@ static int queue_phy_reset(struct sas_phy *phy, int hard_reset) if (rc == 0) rc = d->reset_result; mutex_unlock(&d->event_lock); + pm_runtime_put_sync(ha->dev); return rc; } @@ -558,6 +560,7 @@ static int queue_phy_enable(struct sas_phy *phy, int enable) if (!d) return -ENOMEM; + pm_runtime_get_sync(ha->dev); /* libsas workqueue coordinates ata-eh reset with discovery */ mutex_lock(&d->event_lock); d->enable_result = 0; @@ -571,6 +574,7 @@ static int queue_phy_enable(struct sas_phy *phy, int enable) if (rc == 0) rc = d->enable_result; mutex_unlock(&d->event_lock); + pm_runtime_put_sync(ha->dev); return rc; } |