From: Can Guo <cang@codeaurora.org>
To: asutoshd@codeaurora.org, ziqichen@codeaurora.org,
nguyenb@codeaurora.org, hongwus@codeaurora.org,
linux-scsi@vger.kernel.org, kernel-team@android.com,
cang@codeaurora.org
Cc: Alim Akhtar <alim.akhtar@samsung.com>,
Avri Altman <avri.altman@wdc.com>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Stanley Chu <stanley.chu@mediatek.com>,
Bean Huo <beanhuo@micron.com>, Jaegeuk Kim <jaegeuk@kernel.org>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v2 1/3] scsi: ufs: Do not put UFS power into LPM if link is broken
Date: Sun, 25 Apr 2021 20:48:38 -0700 [thread overview]
Message-ID: <1619408921-30426-2-git-send-email-cang@codeaurora.org> (raw)
In-Reply-To: <1619408921-30426-1-git-send-email-cang@codeaurora.org>
During resume, if link is broken due to AH8 failure, make sure
ufshcd_resume() do not put UFS power back into LPM.
Fixes: 4db7a23605973 ("scsi: ufs: Fix concurrency of error handler and other error recovery paths")
Signed-off-by: Can Guo <cang@codeaurora.org>
---
drivers/scsi/ufs/ufshcd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 6da1da8..28501bb 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -8660,7 +8660,7 @@ static void ufshcd_vreg_set_lpm(struct ufs_hba *hba)
} else if (!ufshcd_is_ufs_dev_active(hba)) {
ufshcd_toggle_vreg(hba->dev, hba->vreg_info.vcc, false);
vcc_off = true;
- if (!ufshcd_is_link_active(hba)) {
+ if (ufshcd_is_link_hibern8(hba) || ufshcd_is_link_off(hba)) {
ufshcd_config_vreg_lpm(hba, hba->vreg_info.vccq);
ufshcd_config_vreg_lpm(hba, hba->vreg_info.vccq2);
}
@@ -8682,7 +8682,7 @@ static int ufshcd_vreg_set_hpm(struct ufs_hba *hba)
!hba->dev_info.is_lu_power_on_wp) {
ret = ufshcd_setup_vreg(hba, true);
} else if (!ufshcd_is_ufs_dev_active(hba)) {
- if (!ret && !ufshcd_is_link_active(hba)) {
+ if (!ufshcd_is_link_active(hba)) {
ret = ufshcd_config_vreg_hpm(hba, hba->vreg_info.vccq);
if (ret)
goto vcc_disable;
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
next prev parent reply other threads:[~2021-04-26 3:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-26 3:48 [PATCH v2 0/3] Three minor fixes w.r.t suspend/resume Can Guo
2021-04-26 3:48 ` Can Guo [this message]
2021-04-26 3:48 ` [PATCH v2 2/3] scsi: ufs: Cancel rpm_dev_flush_recheck_work during system suspend Can Guo
2021-04-26 3:48 ` [PATCH v2 3/3] scsi: ufs: Narrow down fast pass in system suspend path Can Guo
[not found] ` <CGME20210426034911epcas2p12dc728215c9a56e3dd2a7870f63e107b@epcms2p2>
2021-04-26 5:47 ` [PATCH v2 0/3] Three minor fixes w.r.t suspend/resume Daejun Park
2021-04-29 3:18 ` Martin K. Petersen
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