linux-kernel - [PATCH 1/1] ufs: update the timeout timer after resume

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Date:   Thu, 29 Dec 2022 11:06:45 +0800
From:   Ed Tsai <ed.tsai@...iatek.com>
To:     <alim.akhtar@...sung.com>, <avri.altman@....com>,
        <jejb@...ux.ibm.com>, <martin.petersen@...cle.com>,
        <matthias.bgg@...il.com>, <linux-scsi@...r.kernel.org>
CC:     <peter.wang@...iatek.com>, <alice.chao@...iatek.com>,
        <powen.kao@...iatek.com>, <naomi.chu@...iatek.com>,
        <stanley.chu@...iatek.com>, <wsd_upstream@...iatek.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        Ed Tsai <ed.tsai@...iatek.com>
Subject: [PATCH 1/1] ufs: update the timeout timer after resume

The tags allocation is limited by the number of active queues and a
queue is marked as inactive by the queue timeout worker after up to 30Hz
by default.

Therefore, tags for the general I/O may be limited to half of the max
depth up to 30HZ after resume. To make sure the ufs request queue for pm
usage can be inactive immediately, trigger the timeout worker to release
the tag set.

Signed-off-by: Ed Tsai <ed.tsai@...iatek.com>
---
 drivers/ufs/core/ufshcd.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index e18c9f4463ec..c77570caa3a8 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -8842,6 +8842,7 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
 		hba->curr_dev_pwr_mode = pwr_mode;
 	}
 
+	mod_timer(&sdp->request_queue->timeout, 0);
 	scsi_device_put(sdp);
 	hba->host->eh_noresume = 0;
 	return ret;
-- 
2.18.0