linux-kernel - [PATCH] phy: freescale: Initialize priv->lock

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Message-ID: <20250923141611.1295395-1-xiaolei.wang@windriver.com>
Date: Tue, 23 Sep 2025 22:16:11 +0800
From: Xiaolei Wang <xiaolei.wang@...driver.com>
To: vkoul@...nel.org, kishon@...nel.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        xiaolei.wang@...driver.com
Cc: linux-phy@...ts.infradead.org, imx@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] phy: freescale: Initialize priv->lock

Initialize priv->lock to fix the following warning.

WARNING: CPU: 0 PID: 12 at kernel/locking/mutex.c:577 __mutex_lock+0x70c/0x8b8
 Modules linked in:
 Hardware name: Freescale i.MX8QM MEK (DT)
 Call trace:
  __mutex_lock+0x70c/0x8b8 (P)
  mutex_lock_nested+0x24/0x30
  imx_hsio_power_on+0x4c/0x764
  phy_power_on+0x7c/0x12c
  imx_pcie_host_init+0x1d0/0x4d4
  dw_pcie_host_init+0x188/0x4b0
  imx_pcie_probe+0x324/0x6f4
  platform_probe+0x5c/0x98
  really_probe+0xbc/0x29c
  __driver_probe_device+0x78/0x12c
  driver_probe_device+0xd8/0x160
  __device_attach_driver+0xb8/0x138
  bus_for_each_drv+0x84/0xe4
  __device_attach_async_helper+0xb8/0xdc
  async_run_entry_fn+0x34/0xe0
  process_one_work+0x220/0x694
  worker_thread+0x1c0/0x36c
  kthread+0x14c/0x224

Fixes: 82c56b6dd24f ("phy: freescale: imx8qm-hsio: Add i.MX8QM HSIO PHY driver support")
Signed-off-by: Xiaolei Wang <xiaolei.wang@...driver.com>
---
 drivers/phy/freescale/phy-fsl-imx8qm-hsio.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/phy/freescale/phy-fsl-imx8qm-hsio.c b/drivers/phy/freescale/phy-fsl-imx8qm-hsio.c
index 5dca93cd325c..9453ab98e475 100644
--- a/drivers/phy/freescale/phy-fsl-imx8qm-hsio.c
+++ b/drivers/phy/freescale/phy-fsl-imx8qm-hsio.c
@@ -545,6 +545,7 @@ static int imx_hsio_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	priv->dev = &pdev->dev;
 	priv->drvdata = of_device_get_match_data(dev);
+	mutex_init(&priv->lock);
 
 	/* Get HSIO configuration mode */
 	if (of_property_read_string(np, "fsl,hsio-cfg", &priv->hsio_cfg))
-- 
2.43.0