From: Adrian Hunter <adrian.hunter@intel.com>
To: "Martin K . Petersen" <martin.petersen@oracle.com>,
"James E . J . Bottomley" <jejb@linux.vnet.ibm.com>
Cc: Jens Axboe <axboe@kernel.dk>, Christoph Hellwig <hch@lst.de>,
Ming Lei <ming.lei@redhat.com>,
Johannes Thumshirn <jthumshirn@suse.de>,
Bart Van Assche <Bart.VanAssche@wdc.com>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
Stanislav Nijnikov <stanislav.nijnikov@wdc.com>,
Evan Green <evgreen@chromium.org>,
Vinayak Holikatti <vinholikatti@gmail.com>,
Janek Kotas <jank@cadence.com>,
Vivek Gautam <vivek.gautam@codeaurora.org>,
Asutosh Das <asutoshd@codeaurora.org>,
Subhash Jadavani <subhashj@codeaurora.org>,
Sayali Lokhande <sayalil@codeaurora.org>,
Li Wei <liwei213@huawei.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Jaegeuk Kim <jaegeuk@kernel.org>,
Alim Akhtar <alim.akhtar@samsung.com>,
Alex Lemberg <Alex.Lemberg@sandisk.com>
Subject: [PATCH RFC] scsi: ufs: Disable blk-mq for now
Date: Thu, 13 Sep 2018 14:28:48 +0300 [thread overview]
Message-ID: <20180913112848.7807-1-adrian.hunter@intel.com> (raw)
blk-mq does not support runtime pm, so disable blk-mq support for now.
Fixes: d5038a13eca7 ("scsi: core: switch to scsi-mq by default")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
drivers/scsi/ufs/ufshcd.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 40548bae8efa..a4d36497a047 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -7975,6 +7975,13 @@ int ufshcd_alloc_host(struct device *dev, struct ufs_hba **hba_handle)
err = -ENOMEM;
goto out_error;
}
+
+ /*
+ * Do not use blk-mq at this time because blk-mq does not support
+ * runtime pm.
+ */
+ host->use_blk_mq = false;
+
hba = shost_priv(host);
hba->host = host;
hba->dev = dev;
--
2.17.1
next reply other threads:[~2018-09-13 11:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-13 11:28 Adrian Hunter [this message]
2018-09-13 12:05 ` [PATCH RFC] scsi: ufs: Disable blk-mq for now Ming Lei
2018-09-13 12:15 ` Adrian Hunter
2018-09-14 1:52 ` Ming Lei
2018-09-14 6:17 ` Adrian Hunter
2018-09-14 13:03 ` Adrian Hunter
2018-09-20 6:58 ` Christoph Hellwig
2018-09-21 1:59 ` Martin K. Petersen
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