[PATCH 5.15.y v3 0/5] phy: qcom-qmp-combo: Backport some stable fixes

[PATCH 5.15.y v3 0/5] phy: qcom-qmp-combo: Backport some stable fixes

[Stephen Boyd]

After the qmp phy driver was split it looks like 5.15.y stable kernels
aren't getting fixes like commit 7a7d86d14d07 ("phy: qcom-qmp-combo: fix
broken power on") which is tagged for stable 5.10. Trogdor boards use
the qmp phy on 5.15.y kernels, so I backported the fixes I could find
that looked like we may possibly trip over at some point.

USB and DP work on my Trogdor.Lazor board with this set.

Changes from v2 (https://lore.kernel.org/r/20230113204548.578798-1-swboyd@chromium.org):
 * Keep conditional that can't be removed from last patch
 * Rebase to latest 5.15.y stable tree

Changes from v1 (https://lore.kernel.org/r/20230113005405.3992011-1-swboyd@chromium.org):
 * New patch for memleak on probe deferal to avoid compat issues
 * Update "fix broken power on" patch for pcie/ufs phy

Johan Hovold (5):
  phy: qcom-qmp-combo: disable runtime PM on unbind
  phy: qcom-qmp-combo: fix memleak on probe deferral
  phy: qcom-qmp-usb: fix memleak on probe deferral
  phy: qcom-qmp-combo: fix broken power on
  phy: qcom-qmp-combo: fix runtime suspend

 drivers/phy/qualcomm/phy-qcom-qmp.c | 89 ++++++++++++++++++++---------
 1 file changed, 61 insertions(+), 28 deletions(-)

Cc: Johan Hovold <johan+linaro@kernel.org>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Vinod Koul <vkoul@kernel.org>

base-commit: 9cf4111cdf9420fa99792ae16c8de23242bb2e0b
-- 
https://chromeos.dev

[PATCH 5.15.y v3 1/5] phy: qcom-qmp-combo: disable runtime PM on unbind

[Stephen Boyd]

From: Johan Hovold <johan+linaro@kernel.org>

commit 4382d518d1887e62234560ea08a0203d11d28cc1 upstream.

Make sure to disable runtime PM also on driver unbind.

Fixes: ac0d239936bd ("phy: qcom-qmp: Add support for runtime PM").
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220907110728.19092-2-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index a9687e040960..7b7557c35af6 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -5740,7 +5740,9 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	pm_runtime_set_active(dev);
-	pm_runtime_enable(dev);
+	ret = devm_pm_runtime_enable(dev);
+	if (ret)
+		return ret;
 	/*
 	 * Prevent runtime pm from being ON by default. Users can enable
 	 * it using power/control in sysfs.
@@ -5790,13 +5792,10 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
 	if (!IS_ERR(phy_provider))
 		dev_info(dev, "Registered Qcom-QMP phy\n");
-	else
-		pm_runtime_disable(dev);
 
 	return PTR_ERR_OR_ZERO(phy_provider);
 
 err_node_put:
-	pm_runtime_disable(dev);
 	of_node_put(child);
 	return ret;
 }
-- 
https://chromeos.dev

Patch "phy: qcom-qmp-combo: disable runtime PM on unbind" has been added to the 5.15-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    phy: qcom-qmp-combo: disable runtime PM on unbind

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     phy-qcom-qmp-combo-disable-runtime-pm-on-unbind.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From stable-owner@vger.kernel.org Fri Feb  3 23:27:27 2023
From: Stephen Boyd <swboyd@chromium.org>
Date: Fri,  3 Feb 2023 14:26:12 -0800
Subject: phy: qcom-qmp-combo: disable runtime PM on unbind
To: stable@vger.kernel.org
Cc: Johan Hovold <johan+linaro@kernel.org>, linux-kernel@vger.kernel.org, patches@lists.linux.dev, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, Vinod Koul <vkoul@kernel.org>
Message-ID: <20230203222616.2935268-2-swboyd@chromium.org>

From: Johan Hovold <johan+linaro@kernel.org>

commit 4382d518d1887e62234560ea08a0203d11d28cc1 upstream.

Make sure to disable runtime PM also on driver unbind.

Fixes: ac0d239936bd ("phy: qcom-qmp: Add support for runtime PM").
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220907110728.19092-2-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -5740,7 +5740,9 @@ static int qcom_qmp_phy_probe(struct pla
 		return -ENOMEM;
 
 	pm_runtime_set_active(dev);
-	pm_runtime_enable(dev);
+	ret = devm_pm_runtime_enable(dev);
+	if (ret)
+		return ret;
 	/*
 	 * Prevent runtime pm from being ON by default. Users can enable
 	 * it using power/control in sysfs.
@@ -5790,13 +5792,10 @@ static int qcom_qmp_phy_probe(struct pla
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
 	if (!IS_ERR(phy_provider))
 		dev_info(dev, "Registered Qcom-QMP phy\n");
-	else
-		pm_runtime_disable(dev);
 
 	return PTR_ERR_OR_ZERO(phy_provider);
 
 err_node_put:
-	pm_runtime_disable(dev);
 	of_node_put(child);
 	return ret;
 }


Patches currently in stable-queue which might be from stable-owner@vger.kernel.org are

queue-5.15/phy-qcom-qmp-combo-fix-broken-power-on.patch
queue-5.15/phy-qcom-qmp-combo-fix-runtime-suspend.patch
queue-5.15/phy-qcom-qmp-combo-disable-runtime-pm-on-unbind.patch
queue-5.15/phy-qcom-qmp-usb-fix-memleak-on-probe-deferral.patch
queue-5.15/phy-qcom-qmp-combo-fix-memleak-on-probe-deferral.patch

[PATCH 5.15.y v3 2/5] phy: qcom-qmp-combo: fix memleak on probe deferral

[Stephen Boyd]

From: Johan Hovold <johan+linaro@kernel.org>

commit 2de8a325b1084330ae500380cc27edc39f488c30 upstream.

Switch to using the device-managed of_iomap helper to avoid leaking
memory on probe deferral and driver unbind.

Note that this helper checks for already reserved regions and may fail
if there are multiple devices claiming the same memory.

Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20220916102340.11520-5-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c | 32 +++++++++++++++--------------
 1 file changed, 17 insertions(+), 15 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index 7b7557c35af6..c6f860ce3d99 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -5410,17 +5410,17 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id,
 	 * For dual lane PHYs: tx2 -> 3, rx2 -> 4, pcs_misc (optional) -> 5
 	 * For single lane PHYs: pcs_misc (optional) -> 3.
 	 */
-	qphy->tx = of_iomap(np, 0);
-	if (!qphy->tx)
-		return -ENOMEM;
+	qphy->tx = devm_of_iomap(dev, np, 0, NULL);
+	if (IS_ERR(qphy->tx))
+		return PTR_ERR(qphy->tx);
 
-	qphy->rx = of_iomap(np, 1);
-	if (!qphy->rx)
-		return -ENOMEM;
+	qphy->rx = devm_of_iomap(dev, np, 1, NULL);
+	if (IS_ERR(qphy->rx))
+		return PTR_ERR(qphy->rx);
 
-	qphy->pcs = of_iomap(np, 2);
-	if (!qphy->pcs)
-		return -ENOMEM;
+	qphy->pcs = devm_of_iomap(dev, np, 2, NULL);
+	if (IS_ERR(qphy->pcs))
+		return PTR_ERR(qphy->pcs);
 
 	/*
 	 * If this is a dual-lane PHY, then there should be registers for the
@@ -5429,9 +5429,9 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id,
 	 * offset from the first lane.
 	 */
 	if (cfg->is_dual_lane_phy) {
-		qphy->tx2 = of_iomap(np, 3);
-		qphy->rx2 = of_iomap(np, 4);
-		if (!qphy->tx2 || !qphy->rx2) {
+		qphy->tx2 = devm_of_iomap(dev, np, 3, NULL);
+		qphy->rx2 = devm_of_iomap(dev, np, 4, NULL);
+		if (IS_ERR(qphy->tx2) || IS_ERR(qphy->rx2)) {
 			dev_warn(dev,
 				 "Underspecified device tree, falling back to legacy register regions\n");
 
@@ -5441,15 +5441,17 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id,
 			qphy->rx2 = qphy->rx + QMP_PHY_LEGACY_LANE_STRIDE;
 
 		} else {
-			qphy->pcs_misc = of_iomap(np, 5);
+			qphy->pcs_misc = devm_of_iomap(dev, np, 5, NULL);
 		}
 
 	} else {
-		qphy->pcs_misc = of_iomap(np, 3);
+		qphy->pcs_misc = devm_of_iomap(dev, np, 3, NULL);
 	}
 
-	if (!qphy->pcs_misc)
+	if (IS_ERR(qphy->pcs_misc)) {
 		dev_vdbg(dev, "PHY pcs_misc-reg not used\n");
+		qphy->pcs_misc = NULL;
+	}
 
 	/*
 	 * Get PHY's Pipe clock, if any. USB3 and PCIe are PIPE3
-- 
https://chromeos.dev

Patch "phy: qcom-qmp-combo: fix memleak on probe deferral" has been added to the 5.15-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    phy: qcom-qmp-combo: fix memleak on probe deferral

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     phy-qcom-qmp-combo-fix-memleak-on-probe-deferral.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From stable-owner@vger.kernel.org Fri Feb  3 23:27:29 2023
From: Stephen Boyd <swboyd@chromium.org>
Date: Fri,  3 Feb 2023 14:26:13 -0800
Subject: phy: qcom-qmp-combo: fix memleak on probe deferral
To: stable@vger.kernel.org
Cc: Johan Hovold <johan+linaro@kernel.org>, linux-kernel@vger.kernel.org, patches@lists.linux.dev, Vinod Koul <vkoul@kernel.org>
Message-ID: <20230203222616.2935268-3-swboyd@chromium.org>

From: Johan Hovold <johan+linaro@kernel.org>

commit 2de8a325b1084330ae500380cc27edc39f488c30 upstream.

Switch to using the device-managed of_iomap helper to avoid leaking
memory on probe deferral and driver unbind.

Note that this helper checks for already reserved regions and may fail
if there are multiple devices claiming the same memory.

Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20220916102340.11520-5-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c |   36 +++++++++++++++++++-----------------
 1 file changed, 19 insertions(+), 17 deletions(-)

--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -5410,17 +5410,17 @@ int qcom_qmp_phy_create(struct device *d
 	 * For dual lane PHYs: tx2 -> 3, rx2 -> 4, pcs_misc (optional) -> 5
 	 * For single lane PHYs: pcs_misc (optional) -> 3.
 	 */
-	qphy->tx = of_iomap(np, 0);
-	if (!qphy->tx)
-		return -ENOMEM;
-
-	qphy->rx = of_iomap(np, 1);
-	if (!qphy->rx)
-		return -ENOMEM;
-
-	qphy->pcs = of_iomap(np, 2);
-	if (!qphy->pcs)
-		return -ENOMEM;
+	qphy->tx = devm_of_iomap(dev, np, 0, NULL);
+	if (IS_ERR(qphy->tx))
+		return PTR_ERR(qphy->tx);
+
+	qphy->rx = devm_of_iomap(dev, np, 1, NULL);
+	if (IS_ERR(qphy->rx))
+		return PTR_ERR(qphy->rx);
+
+	qphy->pcs = devm_of_iomap(dev, np, 2, NULL);
+	if (IS_ERR(qphy->pcs))
+		return PTR_ERR(qphy->pcs);
 
 	/*
 	 * If this is a dual-lane PHY, then there should be registers for the
@@ -5429,9 +5429,9 @@ int qcom_qmp_phy_create(struct device *d
 	 * offset from the first lane.
 	 */
 	if (cfg->is_dual_lane_phy) {
-		qphy->tx2 = of_iomap(np, 3);
-		qphy->rx2 = of_iomap(np, 4);
-		if (!qphy->tx2 || !qphy->rx2) {
+		qphy->tx2 = devm_of_iomap(dev, np, 3, NULL);
+		qphy->rx2 = devm_of_iomap(dev, np, 4, NULL);
+		if (IS_ERR(qphy->tx2) || IS_ERR(qphy->rx2)) {
 			dev_warn(dev,
 				 "Underspecified device tree, falling back to legacy register regions\n");
 
@@ -5441,15 +5441,17 @@ int qcom_qmp_phy_create(struct device *d
 			qphy->rx2 = qphy->rx + QMP_PHY_LEGACY_LANE_STRIDE;
 
 		} else {
-			qphy->pcs_misc = of_iomap(np, 5);
+			qphy->pcs_misc = devm_of_iomap(dev, np, 5, NULL);
 		}
 
 	} else {
-		qphy->pcs_misc = of_iomap(np, 3);
+		qphy->pcs_misc = devm_of_iomap(dev, np, 3, NULL);
 	}
 
-	if (!qphy->pcs_misc)
+	if (IS_ERR(qphy->pcs_misc)) {
 		dev_vdbg(dev, "PHY pcs_misc-reg not used\n");
+		qphy->pcs_misc = NULL;
+	}
 
 	/*
 	 * Get PHY's Pipe clock, if any. USB3 and PCIe are PIPE3


Patches currently in stable-queue which might be from stable-owner@vger.kernel.org are

queue-5.15/phy-qcom-qmp-combo-fix-broken-power-on.patch
queue-5.15/phy-qcom-qmp-combo-fix-runtime-suspend.patch
queue-5.15/phy-qcom-qmp-combo-disable-runtime-pm-on-unbind.patch
queue-5.15/phy-qcom-qmp-usb-fix-memleak-on-probe-deferral.patch
queue-5.15/phy-qcom-qmp-combo-fix-memleak-on-probe-deferral.patch

[PATCH 5.15.y v3 3/5] phy: qcom-qmp-usb: fix memleak on probe deferral

[Stephen Boyd]

From: Johan Hovold <johan+linaro@kernel.org>

commit a5d6b1ac56cbd6b5850a3a54e35f1cb71e8e8cdd upstream.

Switch to using the device-managed of_iomap helper to avoid leaking
memory on probe deferral and driver unbind.

Note that this helper checks for already reserved regions and may fail
if there are multiple devices claiming the same memory.

Two bindings currently rely on overlapping mappings for the PCS region
so fallback to non-exclusive mappings for those for now.

Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20220916102340.11520-7-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
[swboyd@chromium.org: Backport to pre-split driver]
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index c6f860ce3d99..ee4fd7afcea2 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -5387,6 +5387,21 @@ static void qcom_qmp_reset_control_put(void *data)
 	reset_control_put(data);
 }
 
+static void __iomem *qmp_usb_iomap(struct device *dev, struct device_node *np,
+		int index, bool exclusive)
+{
+	struct resource res;
+
+	if (!exclusive) {
+		if (of_address_to_resource(np, index, &res))
+			return IOMEM_ERR_PTR(-EINVAL);
+
+		return devm_ioremap(dev, res.start, resource_size(&res));
+	}
+
+	return devm_of_iomap(dev, np, index, NULL);
+}
+
 static
 int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id,
 			void __iomem *serdes, const struct qmp_phy_cfg *cfg)
@@ -5396,8 +5411,18 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id,
 	struct qmp_phy *qphy;
 	const struct phy_ops *ops;
 	char prop_name[MAX_PROP_NAME];
+	bool exclusive = true;
 	int ret;
 
+	/*
+	 * FIXME: These bindings should be fixed to not rely on overlapping
+	 *        mappings for PCS.
+	 */
+	if (of_device_is_compatible(dev->of_node, "qcom,sdx65-qmp-usb3-uni-phy"))
+		exclusive = false;
+	if (of_device_is_compatible(dev->of_node, "qcom,sm8350-qmp-usb3-uni-phy"))
+		exclusive = false;
+
 	qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL);
 	if (!qphy)
 		return -ENOMEM;
@@ -5418,7 +5443,7 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id,
 	if (IS_ERR(qphy->rx))
 		return PTR_ERR(qphy->rx);
 
-	qphy->pcs = devm_of_iomap(dev, np, 2, NULL);
+	qphy->pcs = qmp_usb_iomap(dev, np, 2, exclusive);
 	if (IS_ERR(qphy->pcs))
 		return PTR_ERR(qphy->pcs);
 
-- 
https://chromeos.dev

Patch "phy: qcom-qmp-usb: fix memleak on probe deferral" has been added to the 5.15-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    phy: qcom-qmp-usb: fix memleak on probe deferral

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     phy-qcom-qmp-usb-fix-memleak-on-probe-deferral.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From stable-owner@vger.kernel.org Fri Feb  3 23:27:26 2023
From: Stephen Boyd <swboyd@chromium.org>
Date: Fri,  3 Feb 2023 14:26:14 -0800
Subject: phy: qcom-qmp-usb: fix memleak on probe deferral
To: stable@vger.kernel.org
Cc: Johan Hovold <johan+linaro@kernel.org>, linux-kernel@vger.kernel.org, patches@lists.linux.dev, Vinod Koul <vkoul@kernel.org>
Message-ID: <20230203222616.2935268-4-swboyd@chromium.org>

From: Johan Hovold <johan+linaro@kernel.org>

commit a5d6b1ac56cbd6b5850a3a54e35f1cb71e8e8cdd upstream.

Switch to using the device-managed of_iomap helper to avoid leaking
memory on probe deferral and driver unbind.

Note that this helper checks for already reserved regions and may fail
if there are multiple devices claiming the same memory.

Two bindings currently rely on overlapping mappings for the PCS region
so fallback to non-exclusive mappings for those for now.

Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20220916102340.11520-7-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
[swboyd@chromium.org: Backport to pre-split driver]
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c |   27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -5387,6 +5387,21 @@ static void qcom_qmp_reset_control_put(v
 	reset_control_put(data);
 }
 
+static void __iomem *qmp_usb_iomap(struct device *dev, struct device_node *np,
+		int index, bool exclusive)
+{
+	struct resource res;
+
+	if (!exclusive) {
+		if (of_address_to_resource(np, index, &res))
+			return IOMEM_ERR_PTR(-EINVAL);
+
+		return devm_ioremap(dev, res.start, resource_size(&res));
+	}
+
+	return devm_of_iomap(dev, np, index, NULL);
+}
+
 static
 int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id,
 			void __iomem *serdes, const struct qmp_phy_cfg *cfg)
@@ -5396,8 +5411,18 @@ int qcom_qmp_phy_create(struct device *d
 	struct qmp_phy *qphy;
 	const struct phy_ops *ops;
 	char prop_name[MAX_PROP_NAME];
+	bool exclusive = true;
 	int ret;
 
+	/*
+	 * FIXME: These bindings should be fixed to not rely on overlapping
+	 *        mappings for PCS.
+	 */
+	if (of_device_is_compatible(dev->of_node, "qcom,sdx65-qmp-usb3-uni-phy"))
+		exclusive = false;
+	if (of_device_is_compatible(dev->of_node, "qcom,sm8350-qmp-usb3-uni-phy"))
+		exclusive = false;
+
 	qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL);
 	if (!qphy)
 		return -ENOMEM;
@@ -5418,7 +5443,7 @@ int qcom_qmp_phy_create(struct device *d
 	if (IS_ERR(qphy->rx))
 		return PTR_ERR(qphy->rx);
 
-	qphy->pcs = devm_of_iomap(dev, np, 2, NULL);
+	qphy->pcs = qmp_usb_iomap(dev, np, 2, exclusive);
 	if (IS_ERR(qphy->pcs))
 		return PTR_ERR(qphy->pcs);
 


Patches currently in stable-queue which might be from stable-owner@vger.kernel.org are

queue-5.15/phy-qcom-qmp-combo-fix-broken-power-on.patch
queue-5.15/phy-qcom-qmp-combo-fix-runtime-suspend.patch
queue-5.15/phy-qcom-qmp-combo-disable-runtime-pm-on-unbind.patch
queue-5.15/phy-qcom-qmp-usb-fix-memleak-on-probe-deferral.patch
queue-5.15/phy-qcom-qmp-combo-fix-memleak-on-probe-deferral.patch

[PATCH 5.15.y v3 4/5] phy: qcom-qmp-combo: fix broken power on

[Stephen Boyd]

From: Johan Hovold <johan+linaro@kernel.org>

commit 7a7d86d14d073dfa3429c550667a8e78b99edbd4 upstream.

The PHY is powered on during phy-init by setting the SW_PWRDN bit in the
COM_POWER_DOWN_CTRL register and then setting the same bit in the in the
PCS_POWER_DOWN_CONTROL register that belongs to the USB part of the
PHY.

Currently, whether power on succeeds depends on probe order and having
the USB part of the PHY be initialised first. In case the DP part of the
PHY is instead initialised first, the intended power on of the USB block
results in a corrupted DP_PHY register (e.g. DP_PHY_AUX_CFG8).

Add a pointer to the USB part of the PHY to the driver data and use that
to power on the PHY also if the DP part of the PHY is initialised first.

Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy")
Cc: stable@vger.kernel.org	# 5.10
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20221114081346.5116-5-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
[swboyd@chromium.org: Backport to pre-split driver, also set usb_phy for
pcie/ufs]
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index ee4fd7afcea2..b8646eaf1767 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -2919,6 +2919,7 @@ struct qcom_qmp {
 	struct regulator_bulk_data *vregs;
 
 	struct qmp_phy **phys;
+	struct qmp_phy *usb_phy;
 
 	struct mutex phy_mutex;
 	int init_count;
@@ -4554,7 +4555,7 @@ static int qcom_qmp_phy_com_init(struct qmp_phy *qphy)
 	struct qcom_qmp *qmp = qphy->qmp;
 	const struct qmp_phy_cfg *cfg = qphy->cfg;
 	void __iomem *serdes = qphy->serdes;
-	void __iomem *pcs = qphy->pcs;
+	struct qmp_phy *usb_phy = qmp->usb_phy;
 	void __iomem *dp_com = qmp->dp_com;
 	int ret, i;
 
@@ -4620,13 +4621,13 @@ static int qcom_qmp_phy_com_init(struct qmp_phy *qphy)
 		qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL],
 			     SW_PWRDN);
 	} else {
-		if (cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL])
-			qphy_setbits(pcs,
-					cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
-					cfg->pwrdn_ctrl);
+		if (usb_phy->cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL])
+			qphy_setbits(usb_phy->pcs,
+					usb_phy->cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
+					usb_phy->cfg->pwrdn_ctrl);
 		else
-			qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL,
-					cfg->pwrdn_ctrl);
+			qphy_setbits(usb_phy->pcs, QPHY_POWER_DOWN_CONTROL,
+					usb_phy->cfg->pwrdn_ctrl);
 	}
 
 	mutex_unlock(&qmp->phy_mutex);
@@ -5794,6 +5795,9 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
 			goto err_node_put;
 		}
 
+		if (cfg->type != PHY_TYPE_DP)
+			qmp->usb_phy = qmp->phys[id];
+
 		/*
 		 * Register the pipe clock provided by phy.
 		 * See function description to see details of this pipe clock.
@@ -5816,6 +5820,9 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
 		id++;
 	}
 
+	if (!qmp->usb_phy)
+		return -EINVAL;
+
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
 	if (!IS_ERR(phy_provider))
 		dev_info(dev, "Registered Qcom-QMP phy\n");
-- 
https://chromeos.dev

Patch "phy: qcom-qmp-combo: fix broken power on" has been added to the 5.15-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    phy: qcom-qmp-combo: fix broken power on

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     phy-qcom-qmp-combo-fix-broken-power-on.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From stable-owner@vger.kernel.org Fri Feb  3 23:27:28 2023
From: Stephen Boyd <swboyd@chromium.org>
Date: Fri,  3 Feb 2023 14:26:15 -0800
Subject: phy: qcom-qmp-combo: fix broken power on
To: stable@vger.kernel.org
Cc: Johan Hovold <johan+linaro@kernel.org>, linux-kernel@vger.kernel.org, patches@lists.linux.dev, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, Vinod Koul <vkoul@kernel.org>
Message-ID: <20230203222616.2935268-5-swboyd@chromium.org>

From: Johan Hovold <johan+linaro@kernel.org>

commit 7a7d86d14d073dfa3429c550667a8e78b99edbd4 upstream.

The PHY is powered on during phy-init by setting the SW_PWRDN bit in the
COM_POWER_DOWN_CTRL register and then setting the same bit in the in the
PCS_POWER_DOWN_CONTROL register that belongs to the USB part of the
PHY.

Currently, whether power on succeeds depends on probe order and having
the USB part of the PHY be initialised first. In case the DP part of the
PHY is instead initialised first, the intended power on of the USB block
results in a corrupted DP_PHY register (e.g. DP_PHY_AUX_CFG8).

Add a pointer to the USB part of the PHY to the driver data and use that
to power on the PHY also if the DP part of the PHY is initialised first.

Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy")
Cc: stable@vger.kernel.org	# 5.10
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20221114081346.5116-5-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
[swboyd@chromium.org: Backport to pre-split driver, also set usb_phy for
pcie/ufs]
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c |   21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -2919,6 +2919,7 @@ struct qcom_qmp {
 	struct regulator_bulk_data *vregs;
 
 	struct qmp_phy **phys;
+	struct qmp_phy *usb_phy;
 
 	struct mutex phy_mutex;
 	int init_count;
@@ -4554,7 +4555,7 @@ static int qcom_qmp_phy_com_init(struct
 	struct qcom_qmp *qmp = qphy->qmp;
 	const struct qmp_phy_cfg *cfg = qphy->cfg;
 	void __iomem *serdes = qphy->serdes;
-	void __iomem *pcs = qphy->pcs;
+	struct qmp_phy *usb_phy = qmp->usb_phy;
 	void __iomem *dp_com = qmp->dp_com;
 	int ret, i;
 
@@ -4620,13 +4621,13 @@ static int qcom_qmp_phy_com_init(struct
 		qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL],
 			     SW_PWRDN);
 	} else {
-		if (cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL])
-			qphy_setbits(pcs,
-					cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
-					cfg->pwrdn_ctrl);
+		if (usb_phy->cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL])
+			qphy_setbits(usb_phy->pcs,
+					usb_phy->cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
+					usb_phy->cfg->pwrdn_ctrl);
 		else
-			qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL,
-					cfg->pwrdn_ctrl);
+			qphy_setbits(usb_phy->pcs, QPHY_POWER_DOWN_CONTROL,
+					usb_phy->cfg->pwrdn_ctrl);
 	}
 
 	mutex_unlock(&qmp->phy_mutex);
@@ -5794,6 +5795,9 @@ static int qcom_qmp_phy_probe(struct pla
 			goto err_node_put;
 		}
 
+		if (cfg->type != PHY_TYPE_DP)
+			qmp->usb_phy = qmp->phys[id];
+
 		/*
 		 * Register the pipe clock provided by phy.
 		 * See function description to see details of this pipe clock.
@@ -5816,6 +5820,9 @@ static int qcom_qmp_phy_probe(struct pla
 		id++;
 	}
 
+	if (!qmp->usb_phy)
+		return -EINVAL;
+
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
 	if (!IS_ERR(phy_provider))
 		dev_info(dev, "Registered Qcom-QMP phy\n");


Patches currently in stable-queue which might be from stable-owner@vger.kernel.org are

queue-5.15/phy-qcom-qmp-combo-fix-broken-power-on.patch
queue-5.15/phy-qcom-qmp-combo-fix-runtime-suspend.patch
queue-5.15/phy-qcom-qmp-combo-disable-runtime-pm-on-unbind.patch
queue-5.15/phy-qcom-qmp-usb-fix-memleak-on-probe-deferral.patch
queue-5.15/phy-qcom-qmp-combo-fix-memleak-on-probe-deferral.patch

[PATCH 5.15.y v3 5/5] phy: qcom-qmp-combo: fix runtime suspend

[Stephen Boyd]

From: Johan Hovold <johan+linaro@kernel.org>

commit c7b98de745cffdceefc077ad5cf9cda032ef8959 upstream.

Drop the confused runtime-suspend type check which effectively broke
runtime PM if the DP child node happens to be parsed before the USB
child node during probe (e.g. due to order of child nodes in the
devicetree).

Instead use the new driver data USB PHY pointer to access the USB
configuration and resources.

Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20221114081346.5116-6-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
[swboyd@chromium.org: Backport to pre-split driver. Note that the
condition is kept so that ufs and pcie don't do anything as before]
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index b8646eaf1767..eef863108bfe 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -4985,7 +4985,7 @@ static void qcom_qmp_phy_disable_autonomous_mode(struct qmp_phy *qphy)
 static int __maybe_unused qcom_qmp_phy_runtime_suspend(struct device *dev)
 {
 	struct qcom_qmp *qmp = dev_get_drvdata(dev);
-	struct qmp_phy *qphy = qmp->phys[0];
+	struct qmp_phy *qphy = qmp->usb_phy;
 	const struct qmp_phy_cfg *cfg = qphy->cfg;
 
 	dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qphy->mode);
@@ -5010,7 +5010,7 @@ static int __maybe_unused qcom_qmp_phy_runtime_suspend(struct device *dev)
 static int __maybe_unused qcom_qmp_phy_runtime_resume(struct device *dev)
 {
 	struct qcom_qmp *qmp = dev_get_drvdata(dev);
-	struct qmp_phy *qphy = qmp->phys[0];
+	struct qmp_phy *qphy = qmp->usb_phy;
 	const struct qmp_phy_cfg *cfg = qphy->cfg;
 	int ret = 0;
 
-- 
https://chromeos.dev

Patch "phy: qcom-qmp-combo: fix runtime suspend" has been added to the 5.15-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    phy: qcom-qmp-combo: fix runtime suspend

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     phy-qcom-qmp-combo-fix-runtime-suspend.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From stable-owner@vger.kernel.org Fri Feb  3 23:27:28 2023
From: Stephen Boyd <swboyd@chromium.org>
Date: Fri,  3 Feb 2023 14:26:16 -0800
Subject: phy: qcom-qmp-combo: fix runtime suspend
To: stable@vger.kernel.org
Cc: Johan Hovold <johan+linaro@kernel.org>, linux-kernel@vger.kernel.org, patches@lists.linux.dev, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, Vinod Koul <vkoul@kernel.org>
Message-ID: <20230203222616.2935268-6-swboyd@chromium.org>

From: Johan Hovold <johan+linaro@kernel.org>

commit c7b98de745cffdceefc077ad5cf9cda032ef8959 upstream.

Drop the confused runtime-suspend type check which effectively broke
runtime PM if the DP child node happens to be parsed before the USB
child node during probe (e.g. due to order of child nodes in the
devicetree).

Instead use the new driver data USB PHY pointer to access the USB
configuration and resources.

Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20221114081346.5116-6-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
[swboyd@chromium.org: Backport to pre-split driver. Note that the
condition is kept so that ufs and pcie don't do anything as before]
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -4985,7 +4985,7 @@ static void qcom_qmp_phy_disable_autonom
 static int __maybe_unused qcom_qmp_phy_runtime_suspend(struct device *dev)
 {
 	struct qcom_qmp *qmp = dev_get_drvdata(dev);
-	struct qmp_phy *qphy = qmp->phys[0];
+	struct qmp_phy *qphy = qmp->usb_phy;
 	const struct qmp_phy_cfg *cfg = qphy->cfg;
 
 	dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qphy->mode);
@@ -5010,7 +5010,7 @@ static int __maybe_unused qcom_qmp_phy_r
 static int __maybe_unused qcom_qmp_phy_runtime_resume(struct device *dev)
 {
 	struct qcom_qmp *qmp = dev_get_drvdata(dev);
-	struct qmp_phy *qphy = qmp->phys[0];
+	struct qmp_phy *qphy = qmp->usb_phy;
 	const struct qmp_phy_cfg *cfg = qphy->cfg;
 	int ret = 0;
 


Patches currently in stable-queue which might be from stable-owner@vger.kernel.org are

queue-5.15/phy-qcom-qmp-combo-fix-broken-power-on.patch
queue-5.15/phy-qcom-qmp-combo-fix-runtime-suspend.patch
queue-5.15/phy-qcom-qmp-combo-disable-runtime-pm-on-unbind.patch
queue-5.15/phy-qcom-qmp-usb-fix-memleak-on-probe-deferral.patch
queue-5.15/phy-qcom-qmp-combo-fix-memleak-on-probe-deferral.patch

Re: [PATCH 5.15.y v3 0/5] phy: qcom-qmp-combo: Backport some stable fixes

[Greg KH]

On Fri, Feb 03, 2023 at 02:26:11PM -0800, Stephen Boyd wrote:
> After the qmp phy driver was split it looks like 5.15.y stable kernels
> aren't getting fixes like commit 7a7d86d14d07 ("phy: qcom-qmp-combo: fix
> broken power on") which is tagged for stable 5.10. Trogdor boards use
> the qmp phy on 5.15.y kernels, so I backported the fixes I could find
> that looked like we may possibly trip over at some point.
> 
> USB and DP work on my Trogdor.Lazor board with this set.
> 
> Changes from v2 (https://lore.kernel.org/r/20230113204548.578798-1-swboyd@chromium.org):
>  * Keep conditional that can't be removed from last patch
>  * Rebase to latest 5.15.y stable tree
> 
> Changes from v1 (https://lore.kernel.org/r/20230113005405.3992011-1-swboyd@chromium.org):
>  * New patch for memleak on probe deferal to avoid compat issues
>  * Update "fix broken power on" patch for pcie/ufs phy
> 
> Johan Hovold (5):
>   phy: qcom-qmp-combo: disable runtime PM on unbind
>   phy: qcom-qmp-combo: fix memleak on probe deferral
>   phy: qcom-qmp-usb: fix memleak on probe deferral
>   phy: qcom-qmp-combo: fix broken power on
>   phy: qcom-qmp-combo: fix runtime suspend
> 
>  drivers/phy/qualcomm/phy-qcom-qmp.c | 89 ++++++++++++++++++++---------
>  1 file changed, 61 insertions(+), 28 deletions(-)
> 
> Cc: Johan Hovold <johan+linaro@kernel.org>
> Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> Cc: Vinod Koul <vkoul@kernel.org>
> 
> base-commit: 9cf4111cdf9420fa99792ae16c8de23242bb2e0b
> -- 
> https://chromeos.dev
> 

All now queued up, thanks.

greg k-h

Re: Patch "phy: qcom-qmp-combo: disable runtime PM on unbind" has been added to the 5.15-stable tree

[Johan Hovold]

[ Resending with Vinod and the lists on CC. You forgot to CC the
maintainer. ]

On Sun, Oct 16, 2022 at 11:16:01PM -0400, Sasha Levin wrote:
> This is a note to let you know that I've just added the patch titled
> 
>     phy: qcom-qmp-combo: disable runtime PM on unbind
> 
> to the 5.15-stable tree which can be found at:
>     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> 
> The filename of the patch is:
>      phy-qcom-qmp-combo-disable-runtime-pm-on-unbind.patch
> and it can be found in the queue-5.15 subdirectory.
> 
> If you, or anyone else, feels it should not be added to the stable tree,
> please let <stable@vger.kernel.org> know about it.
> 
> 
> 
> commit f3aca84b69977d7c024d9fbf52163de4b852df22
> Author: Johan Hovold <johan+linaro@kernel.org>
> Date:   Wed Sep 7 13:07:13 2022 +0200
> 
>     phy: qcom-qmp-combo: disable runtime PM on unbind
>     
>     [ Upstream commit 4382d518d1887e62234560ea08a0203d11d28cc1 ]
>     
>     Make sure to disable runtime PM also on driver unbind.
>     
>     Fixes: ac0d239936bd ("phy: qcom-qmp: Add support for runtime PM").
>     Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
>     Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
>     Link: https://lore.kernel.org/r/20220907110728.19092-2-johan+linaro@kernel.org
>     Signed-off-by: Vinod Koul <vkoul@kernel.org>
>     Signed-off-by: Sasha Levin <sashal@kernel.org>
> 
> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
> index c7309e981bfb..dcf8a8764e17 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c

This driver did not exist in 5.15. Please don't tell me you're
backporting the QMP driver split and all the follow up cleanups?

Note that hardly any of these QMP fixes had a stable tag for a reason.

> @@ -6273,7 +6273,9 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
>  		return -ENOMEM;
>  
>  	pm_runtime_set_active(dev);
> -	pm_runtime_enable(dev);
> +	ret = devm_pm_runtime_enable(dev);
> +	if (ret)
> +		return ret;
>  	/*
>  	 * Prevent runtime pm from being ON by default. Users can enable
>  	 * it using power/control in sysfs.
> @@ -6323,13 +6325,10 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
>  	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
>  	if (!IS_ERR(phy_provider))
>  		dev_info(dev, "Registered Qcom-QMP phy\n");
> -	else
> -		pm_runtime_disable(dev);
>  
>  	return PTR_ERR_OR_ZERO(phy_provider);
>  
>  err_node_put:
> -	pm_runtime_disable(dev);
>  	of_node_put(child);
>  	return ret;
>  }

Johan

Re: Patch "phy: qcom-qmp-combo: disable runtime PM on unbind" has been added to the 5.15-stable tree

[Johan Hovold]

[ Resending with Vinod and the lists on CC. You forgot to CC the
maintainer. ]

On Sun, Oct 16, 2022 at 11:16:01PM -0400, Sasha Levin wrote:
> This is a note to let you know that I've just added the patch titled
> 
>     phy: qcom-qmp-combo: disable runtime PM on unbind
> 
> to the 5.15-stable tree which can be found at:
>     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> 
> The filename of the patch is:
>      phy-qcom-qmp-combo-disable-runtime-pm-on-unbind.patch
> and it can be found in the queue-5.15 subdirectory.
> 
> If you, or anyone else, feels it should not be added to the stable tree,
> please let <stable@vger.kernel.org> know about it.
> 
> 
> 
> commit f3aca84b69977d7c024d9fbf52163de4b852df22
> Author: Johan Hovold <johan+linaro@kernel.org>
> Date:   Wed Sep 7 13:07:13 2022 +0200
> 
>     phy: qcom-qmp-combo: disable runtime PM on unbind
>     
>     [ Upstream commit 4382d518d1887e62234560ea08a0203d11d28cc1 ]
>     
>     Make sure to disable runtime PM also on driver unbind.
>     
>     Fixes: ac0d239936bd ("phy: qcom-qmp: Add support for runtime PM").
>     Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
>     Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
>     Link: https://lore.kernel.org/r/20220907110728.19092-2-johan+linaro@kernel.org
>     Signed-off-by: Vinod Koul <vkoul@kernel.org>
>     Signed-off-by: Sasha Levin <sashal@kernel.org>
> 
> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
> index c7309e981bfb..dcf8a8764e17 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c

This driver did not exist in 5.15. Please don't tell me you're
backporting the QMP driver split and all the follow up cleanups?

Note that hardly any of these QMP fixes had a stable tag for a reason.

> @@ -6273,7 +6273,9 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
>  		return -ENOMEM;
>  
>  	pm_runtime_set_active(dev);
> -	pm_runtime_enable(dev);
> +	ret = devm_pm_runtime_enable(dev);
> +	if (ret)
> +		return ret;
>  	/*
>  	 * Prevent runtime pm from being ON by default. Users can enable
>  	 * it using power/control in sysfs.
> @@ -6323,13 +6325,10 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
>  	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
>  	if (!IS_ERR(phy_provider))
>  		dev_info(dev, "Registered Qcom-QMP phy\n");
> -	else
> -		pm_runtime_disable(dev);
>  
>  	return PTR_ERR_OR_ZERO(phy_provider);
>  
>  err_node_put:
> -	pm_runtime_disable(dev);
>  	of_node_put(child);
>  	return ret;
>  }

Johan

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