linux-kernel - [PATCH v2 3/4] drivers: net: cpsw: use of_platform

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Date:	Thu, 28 Jul 2016 20:50:36 +0300
From:	Grygorii Strashko <grygorii.strashko@...com>
To:	"David S. Miller" <davem@...emloft.net>, <netdev@...r.kernel.org>,
	Mugunthan V N <mugunthanvnm@...com>
CC:	Sekhar Nori <nsekhar@...com>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	Grygorii Strashko <grygorii.strashko@...com>
Subject: [PATCH v2 3/4] drivers: net: cpsw: use of_platform_depopulate()

Use of_platform_depopulate() in cpsw_remove() instead of
of_device_unregister(), because CSPW child devices will not be
recreated otherwise on next insmod. of_platform_depopulate() is
correct way now as it will ensure that all steps done in
of_platform_populate() are reverted, including cleaning up of
OF_POPULATED flag.

Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
---
 drivers/net/ethernet/ti/cpsw.c | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index ec6f473..f0ed470 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -2566,15 +2566,6 @@ clean_ndev_ret:
 	return ret;
 }
 
-static int cpsw_remove_child_device(struct device *dev, void *c)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-
-	of_device_unregister(pdev);
-
-	return 0;
-}
-
 static int cpsw_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
@@ -2593,7 +2584,7 @@ static int cpsw_remove(struct platform_device *pdev)
 
 	cpsw_ale_destroy(priv->ale);
 	cpdma_ctlr_destroy(priv->dma);
-	device_for_each_child(&pdev->dev, NULL, cpsw_remove_child_device);
+	of_platform_depopulate(&pdev->dev);
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	if (priv->data.dual_emac)
-- 
2.9.2