lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Wed, 6 May 2020 21:13:59 +0300
From:   Grygorii Strashko <grygorii.strashko@...com>
To:     "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        Tero Kristo <t-kristo@...com>
CC:     <netdev@...r.kernel.org>, Sekhar Nori <nsekhar@...com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Grygorii Strashko <grygorii.strashko@...com>
Subject: [PATCH net-next 1/3] net: ethernet: ti: am65-cpsw-nuss: use of_platform_device_create() for mdio

The MCU CPSW expected to populate only MDIO device, but follow up patches
will add "compatible" property to the MCU CPSW CPTS node which will cause
creation of CPTS device and MCU CPSW init failure. Hence, switch to use
of_platform_device_create() instead of of_platform_populate() for MDIO
device population.

Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
---
 drivers/net/ethernet/ti/am65-cpsw-nuss.c | 24 ++++++++++++++++++------
 drivers/net/ethernet/ti/am65-cpsw-nuss.h |  2 ++
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index bb391286d89e..64c9eba3c32a 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -2030,10 +2030,21 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
-	/* We do not want to force this, as in some cases may not have child */
-	if (ret)
-		dev_warn(dev, "populating child nodes err:%d\n", ret);
+	node = of_get_child_by_name(dev->of_node, "mdio");
+	if (!node) {
+		dev_warn(dev, "MDIO node not found\n");
+	} else if (of_device_is_available(node)) {
+		struct platform_device *mdio_pdev;
+
+		mdio_pdev = of_platform_device_create(node, NULL, dev);
+		if (!mdio_pdev) {
+			ret = -ENODEV;
+			goto err_pm_clear;
+		}
+
+		common->mdio_dev =  &mdio_pdev->dev;
+	}
+	of_node_put(node);
 
 	am65_cpsw_nuss_get_ver(common);
 
@@ -2089,7 +2100,8 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev)
 	return 0;
 
 err_of_clear:
-	of_platform_depopulate(dev);
+	of_platform_device_destroy(common->mdio_dev, NULL);
+err_pm_clear:
 	pm_runtime_put_sync(dev);
 	pm_runtime_disable(dev);
 	return ret;
@@ -2114,7 +2126,7 @@ static int am65_cpsw_nuss_remove(struct platform_device *pdev)
 	 */
 	am65_cpsw_nuss_cleanup_ndev(common);
 
-	of_platform_depopulate(dev);
+	of_platform_device_destroy(common->mdio_dev, NULL);
 
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.h b/drivers/net/ethernet/ti/am65-cpsw-nuss.h
index b1cddfd05a45..8a6382188cb5 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.h
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.h
@@ -9,6 +9,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/netdevice.h>
+#include <linux/platform_device.h>
 
 struct am65_cpts;
 
@@ -76,6 +77,7 @@ struct am65_cpsw_pdata {
 
 struct am65_cpsw_common {
 	struct device		*dev;
+	struct device		*mdio_dev;
 	const struct am65_cpsw_pdata *pdata;
 
 	void __iomem		*ss_base;
-- 
2.17.1

Powered by blists - more mailing lists