[PATCH v2 1/7] scsi: sr: fix for sr suspend and resume
From: Aaron Lu <hidden>
Date: 2012-07-24 09:39:55
Also in:
linux-scsi, lkml
Subsystem:
scsi subsystem, the rest · Maintainers:
"James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
In sr_suspend, we do not need to do anything if it is not a runtime pm request, so just return by checking the PM_IS_AUTO macro. And in sr_resume, only reset the suspend_count back to 1 if the ODD is waken up by the user, or the usage count of the scsi device will not balance. Signed-off-by: Aaron Lu <redacted> --- V2: Use PMSG_IS_AUTO as suggested by Alan Stern. drivers/scsi/sr.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 3da0879..225848c 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c@@ -178,8 +178,8 @@ static int sr_suspend(struct device *dev, pm_message_t msg) struct scsi_sense_hdr sshdr; struct scsi_cd *cd = dev_get_drvdata(dev); - /* no action for system suspend */ - if (msg.event == PM_EVENT_SUSPEND) + /* no action for system pm operations */ + if (!PMSG_IS_AUTO(msg)) return 0; /* do another TUR to see if the ODD is still ready to be powered off */
@@ -217,9 +217,9 @@ static int sr_resume(struct device *dev) cd->device->wakeup_by_user = 0; if (!(cd->cdi.mask & CDC_CLOSE_TRAY)) sr_tray_move(&cd->cdi, 1); - } - atomic_set(&cd->suspend_count, 1); + atomic_set(&cd->suspend_count, 1); + } return 0; }
--
1.7.11.3