linux-kernel - [PATCH v2] driver core: platform: set numa_node before platform_add

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Message-Id: <20230913083825.2670-1-guojinhui.liam@bytedance.com>
Date:   Wed, 13 Sep 2023 16:38:25 +0800
From:   guojinhui <guojinhui.liam@...edance.com>
To:     rafael@...nel.org, lenb@...nel.org, gregkh@...uxfoundation.org
Cc:     lizefan.x@...edance.com, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "guojinhui" <guojinhui.liam@...edance.com>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH v2] driver core: platform: set numa_node before platform_add_device()

From: "guojinhui" <guojinhui.liam@...edance.com>

platform_add_device creates numa_node attribute of sysfs according to
whether dev_to_node(dev) is equal to NUMA_NO_NODE. So set the numa node
of the device before creating numa_node attribute of sysfs.

Fixes: 4a60406d3592 ("driver core: platform: expose numa_node to users in sysfs")
Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202309122309.mbxAnAIe-lkp@intel.com/
Signed-off-by: guojinhui <guojinhui.liam@...edance.com>
---
 drivers/acpi/acpi_platform.c |  4 +---
 drivers/base/platform.c      | 13 +++++++++++++
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index 48d15dd785f6..adcbfbdc343f 100644
--- a/drivers/acpi/acpi_platform.c
+++ b/drivers/acpi/acpi_platform.c
@@ -178,11 +178,9 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev,
 	if (IS_ERR(pdev))
 		dev_err(&adev->dev, "platform device creation failed: %ld\n",
 			PTR_ERR(pdev));
-	else {
-		set_dev_node(&pdev->dev, acpi_get_node(adev->handle));
+	else
 		dev_dbg(&adev->dev, "created platform device %s\n",
 			dev_name(&pdev->dev));
-	}
 
 	kfree(resources);
 
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 76bfcba25003..206dc7b020cd 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -795,6 +795,18 @@ void platform_device_unregister(struct platform_device *pdev)
 }
 EXPORT_SYMBOL_GPL(platform_device_unregister);
 
+#ifdef CONFIG_ACPI
+static inline void platform_set_dev_node(struct platform_device *pdev)
+{
+	struct acpi_device *adev = to_acpi_device_node(pdev->dev.fwnode);
+
+	if (adev && adev->handle)
+		set_dev_node(&pdev->dev, acpi_get_node(adev->handle));
+}
+#else
+static inline void platform_set_dev_node(struct platform_device *pdev) {}
+#endif
+
 /**
  * platform_device_register_full - add a platform-level device with
  * resources and platform-specific data
@@ -841,6 +853,7 @@ struct platform_device *platform_device_register_full(
 			goto err;
 	}
 
+	platform_set_dev_node(pdev);
 	ret = platform_device_add(pdev);
 	if (ret) {
 err:
-- 
2.20.1