linux-kernel - [PATCH AUTOSEL 6.1 19/28] scsi: ufs: core: Remove the ufshcd_release() in ufshcd_err_handling

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Message-ID: <20240213002235.671934-19-sashal@kernel.org>
Date: Mon, 12 Feb 2024 19:22:17 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: SEO HOYOUNG <hy50.seo@...sung.com>,
	Bart Van Assche <bvanassche@....org>,
	Can Guo <quic_cang@...cinc.com>,
	"Martin K . Petersen" <martin.petersen@...cle.com>,
	Sasha Levin <sashal@...nel.org>,
	jejb@...ux.ibm.com,
	stanley.chu@...iatek.com,
	avri.altman@....com,
	quic_nguyenb@...cinc.com,
	peter.wang@...iatek.com,
	beanhuo@...ron.com,
	manivannan.sadhasivam@...aro.org,
	quic_ziqichen@...cinc.com,
	athierry@...hat.com,
	linux-scsi@...r.kernel.org
Subject: [PATCH AUTOSEL 6.1 19/28] scsi: ufs: core: Remove the ufshcd_release() in ufshcd_err_handling_prepare()

From: SEO HOYOUNG <hy50.seo@...sung.com>

[ Upstream commit 17e94b2585417e04dabc2f13bc03b4665ae687f3 ]

If ufshcd_err_handler() is called in a suspend/resume situation,
ufs_release() can be called twice and active_reqs end up going negative.
This is because ufshcd_err_handling_prepare() and
ufshcd_err_handling_unprepare() both call ufshcd_release().

Remove superfluous call to ufshcd_release().

Signed-off-by: SEO HOYOUNG <hy50.seo@...sung.com>
Link: https://lore.kernel.org/r/20240122083324.11797-1-hy50.seo@samsung.com
Reviewed-by: Bart Van Assche <bvanassche@....org>
Reviewed-by: Can Guo <quic_cang@...cinc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/ufs/core/ufshcd.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 9fd4e9ed93b8..f3c25467e571 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -6159,7 +6159,6 @@ static void ufshcd_err_handling_prepare(struct ufs_hba *hba)
 		ufshcd_hold(hba, false);
 		if (!ufshcd_is_clkgating_allowed(hba))
 			ufshcd_setup_clocks(hba, true);
-		ufshcd_release(hba);
 		pm_op = hba->is_sys_suspended ? UFS_SYSTEM_PM : UFS_RUNTIME_PM;
 		ufshcd_vops_resume(hba, pm_op);
 	} else {
-- 
2.43.0