Patch "phy: qcom-qmp-pcie: fix memleak on probe deferral" has been added to the 6.0-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

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

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

to the 6.0-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-pcie-fix-memleak-on-probe-deferral.patch
and it can be found in the queue-6.0 subdirectory.

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



commit 904b84de86ab00f2be7d59265d3f042ed8c16866
Author: Johan Hovold <johan+linaro@xxxxxxxxxx>
Date:   Fri Sep 16 12:23:31 2022 +0200

    phy: qcom-qmp-pcie: fix memleak on probe deferral
    
    [ Upstream commit 4be26f695ffa458b065b7942dbff9393bf0836ea ]
    
    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@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20220916102340.11520-3-johan+linaro@xxxxxxxxxx
    Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index 0e0f2482827a..819bcd975ba4 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -2329,17 +2329,17 @@ int qcom_qmp_phy_pcie_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
@@ -2348,9 +2348,9 @@ int qcom_qmp_phy_pcie_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");
 
@@ -2360,20 +2360,20 @@ int qcom_qmp_phy_pcie_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) &&
 	    of_device_is_compatible(dev->of_node, "qcom,ipq6018-qmp-pcie-phy"))
 		qphy->pcs_misc = qphy->pcs + 0x400;
 
-	if (!qphy->pcs_misc) {
+	if (IS_ERR(qphy->pcs_misc)) {
 		if (cfg->pcs_misc_tbl || cfg->pcs_misc_tbl_sec)
-			return -EINVAL;
+			return PTR_ERR(qphy->pcs_misc);
 	}
 
 	snprintf(prop_name, sizeof(prop_name), "pipe%d", id);