From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from out5-smtp.messagingengine.com ([66.111.4.29]:41527 "EHLO out5-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728964AbeKLCIe (ORCPT ); Sun, 11 Nov 2018 21:08:34 -0500 Subject: FAILED: patch "[PATCH] power: supply: twl4030-charger: fix OF sibling-node lookup" failed to apply to 4.14-stable tree To: johan@kernel.org, felipe.balbi@linux.intel.com, neilb@suse.de, robh@kernel.org, sre@kernel.org, stable@vger.kernel.org Cc: From: Date: Sun, 11 Nov 2018 08:19:35 -0800 Message-ID: <15419531757991@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >>From 9844fb2e351311210e6660a9a1c62d17424a6145 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 27 Aug 2018 10:21:53 +0200 Subject: [PATCH] power: supply: twl4030-charger: fix OF sibling-node lookup Use the new of_get_compatible_child() helper to lookup the usb sibling node instead of using of_find_compatible_node(), which searches the entire tree from a given start node and thus can return an unrelated (non-sibling) node. This also addresses a potential use-after-free (e.g. after probe deferral) as the tree-wide helper drops a reference to its first argument (i.e. the parent device node). While at it, also fix the related phy-node reference leak. Fixes: f5e4edb8c888 ("power: twl4030_charger: find associated phy by more reliable means.") Cc: stable # 4.2 Cc: NeilBrown Cc: Felipe Balbi Cc: Sebastian Reichel Reviewed-by: Sebastian Reichel Signed-off-by: Johan Hovold Signed-off-by: Rob Herring diff --git a/drivers/power/supply/twl4030_charger.c b/drivers/power/supply/twl4030_charger.c index bbcaee56db9d..b6a7d9f74cf3 100644 --- a/drivers/power/supply/twl4030_charger.c +++ b/drivers/power/supply/twl4030_charger.c @@ -996,12 +996,13 @@ static int twl4030_bci_probe(struct platform_device *pdev) if (bci->dev->of_node) { struct device_node *phynode; - phynode = of_find_compatible_node(bci->dev->of_node->parent, - NULL, "ti,twl4030-usb"); + phynode = of_get_compatible_child(bci->dev->of_node->parent, + "ti,twl4030-usb"); if (phynode) { bci->usb_nb.notifier_call = twl4030_bci_usb_ncb; bci->transceiver = devm_usb_get_phy_by_node( bci->dev, phynode, &bci->usb_nb); + of_node_put(phynode); if (IS_ERR(bci->transceiver)) { ret = PTR_ERR(bci->transceiver); if (ret == -EPROBE_DEFER)