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Message-ID: <20190130082412.9357-3-yanaijie@huawei.com>
Date: Wed, 30 Jan 2019 16:24:07 +0800
From: Jason Yan <yanaijie@...wei.com>
To: <martin.petersen@...cle.com>, <jejb@...ux.vnet.ibm.com>
CC: <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<john.garry@...wei.com>, <zhaohongjiang@...wei.com>,
<hare@...e.com>, <dan.j.williams@...el.com>, <jthumshirn@...e.de>,
<hch@....de>, <huangdaode@...ilicon.com>,
<chenxiang66@...ilicon.com>, <xiexiuqi@...wei.com>,
<tj@...nel.org>, <miaoxie@...wei.com>,
Jason Yan <yanaijie@...wei.com>,
Ewan Milne <emilne@...hat.com>, Tomas Henzl <thenzl@...hat.com>
Subject: [PATCH v2 2/7] scsi: libsas: only clear phy->in_shutdown after shutdown event done
When the event queue is full of phy up and down events and reached the
threshold, we will queue a shutdown-event, and set phy->in_shutdown so
that we will not queue a shutdown-event again. But before the
shutdown-event can be executed, every phy-down event will clear
phy->in_shutdown and a new shutdown-event will be queued. The queue will
be full of these shutdown-events.
Fix this by only clear phy->in_shutdown in sas_phye_shutdown(), that is
after the first shutdown-event has been executed.
Fixes: f12486e06ae8 ("scsi: libsas: shut down the PHY if events reached the threshold")
Signed-off-by: Jason Yan <yanaijie@...wei.com>
CC: John Garry <john.garry@...wei.com>
CC: Johannes Thumshirn <jthumshirn@...e.de>
CC: Ewan Milne <emilne@...hat.com>
CC: Christoph Hellwig <hch@....de>
CC: Tomas Henzl <thenzl@...hat.com>
CC: Dan Williams <dan.j.williams@...el.com>
CC: Hannes Reinecke <hare@...e.com>
---
drivers/scsi/libsas/sas_phy.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/scsi/libsas/sas_phy.c b/drivers/scsi/libsas/sas_phy.c
index 0374243c85d0..762bb13cca74 100644
--- a/drivers/scsi/libsas/sas_phy.c
+++ b/drivers/scsi/libsas/sas_phy.c
@@ -35,7 +35,6 @@ static void sas_phye_loss_of_signal(struct work_struct *work)
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
- phy->in_shutdown = 0;
phy->error = 0;
sas_deform_port(phy, 1);
}
@@ -45,7 +44,6 @@ static void sas_phye_oob_done(struct work_struct *work)
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
- phy->in_shutdown = 0;
phy->error = 0;
}
@@ -127,6 +125,7 @@ static void sas_phye_shutdown(struct work_struct *work)
} else
pr_notice("phy%02d is not enabled, cannot shutdown\n",
phy->id);
+ phy->in_shutdown = 0;
}
/* ---------- Phy class registration ---------- */
--
2.14.4
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