linux-kernel - [PATCH AUTOSEL 6.12 04/23] scsi: ufs: exynos: Move phy calls to .exit() callback

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Message-Id: <20250422021703.1941244-4-sashal@kernel.org>
Date: Mon, 21 Apr 2025 22:16:44 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Peter Griffin <peter.griffin@...aro.org>,
	Bart Van Assche <bvanassche@....org>,
	"Martin K . Petersen" <martin.petersen@...cle.com>,
	Sasha Levin <sashal@...nel.org>,
	alim.akhtar@...sung.com,
	James.Bottomley@...senPartnership.com,
	krzk@...nel.org,
	linux-scsi@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH AUTOSEL 6.12 04/23] scsi: ufs: exynos: Move phy calls to .exit() callback

From: Peter Griffin <peter.griffin@...aro.org>

[ Upstream commit 67e4085015c33bf2fb552af1f171c58b81ef0616 ]

ufshcd_pltfrm_remove() calls ufshcd_remove(hba) which in turn calls
ufshcd_hba_exit().

By moving the phy_power_off() and phy_exit() calls to the newly created
.exit callback they get called by ufshcd_variant_hba_exit() before
ufshcd_hba_exit() turns off the regulators. This is also similar flow to
the ufs-qcom driver.

Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
Link: https://lore.kernel.org/r/20250319-exynos-ufs-stability-fixes-v2-6-96722cc2ba1b@linaro.org
Reviewed-by: Bart Van Assche <bvanassche@....org>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/ufs/host/ufs-exynos.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c
index 477a9f2920765..344bcc8152244 100644
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -1459,6 +1459,14 @@ static int exynos_ufs_init(struct ufs_hba *hba)
 	return ret;
 }
 
+static void exynos_ufs_exit(struct ufs_hba *hba)
+{
+	struct exynos_ufs *ufs = ufshcd_get_variant(hba);
+
+	phy_power_off(ufs->phy);
+	phy_exit(ufs->phy);
+}
+
 static int exynos_ufs_host_reset(struct ufs_hba *hba)
 {
 	struct exynos_ufs *ufs = ufshcd_get_variant(hba);
@@ -1927,6 +1935,7 @@ static int gs101_ufs_pre_pwr_change(struct exynos_ufs *ufs,
 static const struct ufs_hba_variant_ops ufs_hba_exynos_ops = {
 	.name				= "exynos_ufs",
 	.init				= exynos_ufs_init,
+	.exit				= exynos_ufs_exit,
 	.hce_enable_notify		= exynos_ufs_hce_enable_notify,
 	.link_startup_notify		= exynos_ufs_link_startup_notify,
 	.pwr_change_notify		= exynos_ufs_pwr_change_notify,
@@ -1965,13 +1974,7 @@ static int exynos_ufs_probe(struct platform_device *pdev)
 
 static void exynos_ufs_remove(struct platform_device *pdev)
 {
-	struct ufs_hba *hba =  platform_get_drvdata(pdev);
-	struct exynos_ufs *ufs = ufshcd_get_variant(hba);
-
 	ufshcd_pltfrm_remove(pdev);
-
-	phy_power_off(ufs->phy);
-	phy_exit(ufs->phy);
 }
 
 static struct exynos_ufs_uic_attr exynos7_uic_attr = {
-- 
2.39.5