[PATCH v4 35/38] platform/x86: intel_pmc_ipc: Switch to use driver->dev_groups

[Mika Westerberg]

The driver core provides support for adding additional attributes for
devices via new ->dev_groups member of struct device_driver. Convert the
driver to use that instead of adding the attributes manually.

Suggested-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 drivers/platform/x86/intel_pmc_ipc.c | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)

diff --git a/drivers/platform/x86/intel_pmc_ipc.c b/drivers/platform/x86/intel_pmc_ipc.c
index eb4d65768531..c006609ef74b 100644
--- a/drivers/platform/x86/intel_pmc_ipc.c
+++ b/drivers/platform/x86/intel_pmc_ipc.c
@@ -253,6 +253,11 @@ static const struct attribute_group intel_ipc_group = {
 	.attrs = intel_ipc_attrs,
 };
 
+static const struct attribute_group *intel_ipc_groups[] = {
+	&intel_ipc_group,
+	NULL
+};
+
 static struct resource punit_res_array[] = {
 	/* Punit BIOS */
 	{
@@ -597,28 +602,13 @@ static int ipc_plat_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = sysfs_create_group(&pdev->dev.kobj, &intel_ipc_group);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to create sysfs group %d\n",
-			ret);
-		goto err_devs;
-	}
-
 	ipcdev.has_gcr_regs = true;
 
 	return 0;
-
-err_devs:
-	platform_device_unregister(ipcdev.tco_dev);
-	platform_device_unregister(ipcdev.punit_dev);
-	platform_device_unregister(ipcdev.telemetry_dev);
-
-	return ret;
 }
 
 static int ipc_plat_remove(struct platform_device *pdev)
 {
-	sysfs_remove_group(&pdev->dev.kobj, &intel_ipc_group);
 	platform_device_unregister(ipcdev.tco_dev);
 	platform_device_unregister(ipcdev.punit_dev);
 	platform_device_unregister(ipcdev.telemetry_dev);
@@ -632,6 +622,7 @@ static struct platform_driver ipc_plat_driver = {
 	.driver = {
 		.name = "pmc-ipc-plat",
 		.acpi_match_table = ACPI_PTR(ipc_acpi_ids),
+		.dev_groups = intel_ipc_groups,
 	},
 };
 
-- 
2.24.1