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Subject[PATCH RFC v2 1/1] scsi: pm: Leave runtime PM status alone during system resume/thaw/restore
Date
Runtime resume is handled by runtime PM framework, no need to forcibly
set runtime PM status to RPM_ACTIVE during system resume/thaw/restore.

Cc: Stanley Chu <stanley.chu@mediatek.com>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Can Guo <cang@codeaurora.org>
---

Changes since v1:
- Incorporated Bart's comments

---
drivers/scsi/scsi_pm.c | 24 +-----------------------
1 file changed, 1 insertion(+), 23 deletions(-)

diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c
index 3717eea..908f27f 100644
--- a/drivers/scsi/scsi_pm.c
+++ b/drivers/scsi/scsi_pm.c
@@ -79,25 +79,6 @@ static int scsi_dev_type_resume(struct device *dev,
scsi_device_resume(to_scsi_device(dev));
dev_dbg(dev, "scsi resume: %d\n", err);

- if (err == 0) {
- pm_runtime_disable(dev);
- err = pm_runtime_set_active(dev);
- pm_runtime_enable(dev);
-
- /*
- * Forcibly set runtime PM status of request queue to "active"
- * to make sure we can again get requests from the queue
- * (see also blk_pm_peek_request()).
- *
- * The resume hook will correct runtime PM status of the disk.
- */
- if (!err && scsi_is_sdev_device(dev)) {
- struct scsi_device *sdev = to_scsi_device(dev);
-
- blk_set_runtime_active(sdev->request_queue);
- }
- }
-
return err;
}

@@ -165,11 +146,8 @@ static int scsi_bus_resume_common(struct device *dev,
*/
if (strncmp(scsi_scan_type, "async", 5) != 0)
async_synchronize_full_domain(&scsi_sd_pm_domain);
- } else {
- pm_runtime_disable(dev);
- pm_runtime_set_active(dev);
- pm_runtime_enable(dev);
}
+
return 0;
}

--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
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