From: Bart Van Assche <bvanassche@acm.org>
To: "Martin K . Petersen" <martin.petersen@oracle.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>,
linux-scsi@vger.kernel.org,
Adrian Hunter <adrian.hunter@intel.com>,
Bart Van Assche <bvanassche@acm.org>,
Avri Altman <avri.altman@wdc.com>,
Stanley Chu <stanley.chu@mediatek.com>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Bean Huo <beanhuo@micron.com>,
Jinyoung Choi <j-young.choi@samsung.com>
Subject: [PATCH v4 1/5] scsi: ufs: Reduce the clock scaling latency
Date: Tue, 22 Nov 2022 14:26:13 -0800 [thread overview]
Message-ID: <20221122222617.3449081-2-bvanassche@acm.org> (raw)
In-Reply-To: <20221122222617.3449081-1-bvanassche@acm.org>
Wait at most 20 ms before rechecking the doorbells instead of waiting
for a potentially long time between doorbell checks.
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
drivers/ufs/core/ufshcd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 768cb49d269c..81c20e315dba 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -1154,7 +1154,7 @@ static int ufshcd_wait_for_doorbell_clr(struct ufs_hba *hba,
}
spin_unlock_irqrestore(hba->host->host_lock, flags);
- schedule();
+ io_schedule_timeout(msecs_to_jiffies(20));
if (ktime_to_us(ktime_sub(ktime_get(), start)) >
wait_timeout_us) {
timeout = true;
next prev parent reply other threads:[~2022-11-22 22:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-22 22:26 [PATCH v4 0/5] Prepare for upstreaming Pixel 6 and 7 UFS support Bart Van Assche
2022-11-22 22:26 ` Bart Van Assche [this message]
2022-11-22 22:26 ` [PATCH v4 2/5] scsi: ufs: Move a clock scaling check Bart Van Assche
2022-11-22 22:26 ` [PATCH v4 3/5] scsi: ufs: Pass the clock scaling timeout as an argument Bart Van Assche
2022-11-22 22:26 ` [PATCH v4 4/5] scsi: ufs: Add suspend/resume SCSI command processing support Bart Van Assche
2022-11-22 22:26 ` [PATCH v4 5/5] scsi: ufs: Allow UFS host drivers to override the sg entry size Bart Van Assche
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