linux-kernel - [PATCH] usb: ehci/ohci-exynos: Fix of_node

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Message-Id: <1412576470-23974-1-git-send-email-gautam.vivek@samsung.com>
Date:	Mon,  6 Oct 2014 11:51:10 +0530
From:	Vivek Gautam <gautam.vivek@...sung.com>
To:	linux-usb@...r.kernel.org
Cc:	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	gregkh@...uxfoundation.org, stern@...land.harvard.edu,
	drake@...lessm.com, grant.likely@...retlab.ca,
	kgene.kim@...sung.com, jg1.han@...sung.com,
	Vivek Gautam <gautam.vivek@...sung.com>
Subject: [PATCH] usb: ehci/ohci-exynos: Fix of_node_put() for child when getting PHYs

On enabling CONFIG_OF_SELFTEST which enables CONFIG_OF_DYNAMIC,
we found out that while getting PHYs for the controller we were
doing an extra of_node_put on the child node in our routines -
exynos_e/ohci_get_phy().
This child is however already put by of_get_next_available_child()
which does a of_node_put() on the "prev" node. So there's no point
in putting the same node again in our routine.

Reported-by: Daniel Drake <drake@...lessm.com>
Signed-off-by: Vivek Gautam <gautam.vivek@...sung.com>
---
 drivers/usb/host/ehci-exynos.c |    1 -
 drivers/usb/host/ohci-exynos.c |    1 -
 2 files changed, 2 deletions(-)

diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index 7189f2e..1b726bf 100644
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -74,7 +74,6 @@ static int exynos_ehci_get_phy(struct device *dev,
 
 		phy = devm_of_phy_get(dev, child, NULL);
 		exynos_ehci->phy[phy_number] = phy;
-		of_node_put(child);
 		if (IS_ERR(phy)) {
 			ret = PTR_ERR(phy);
 			if (ret == -EPROBE_DEFER) {
diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
index d28b658..39f366b 100644
--- a/drivers/usb/host/ohci-exynos.c
+++ b/drivers/usb/host/ohci-exynos.c
@@ -63,7 +63,6 @@ static int exynos_ohci_get_phy(struct device *dev,
 
 		phy = devm_of_phy_get(dev, child, NULL);
 		exynos_ohci->phy[phy_number] = phy;
-		of_node_put(child);
 		if (IS_ERR(phy)) {
 			ret = PTR_ERR(phy);
 			if (ret == -EPROBE_DEFER) {
-- 
1.7.10.4

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