From: Pavel Kubelun Date: Mon, 28 Nov 2016 12:31:38 +0000 (+0300) Subject: net: ar8216: prevent device duplication in ar8xxx_dev_list X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a3454d1929abb452102ad7639ade192caf98719e;p=openwrt%2Fstaging%2Fblocktrron.git net: ar8216: prevent device duplication in ar8xxx_dev_list Import from https://chromium.googlesource.com/chromiumos/third_party/kernel/+/fd7b89dd464a4afffa04ff2e17c771dfe95668cf%5E%21/#F0 Signed-off-by: Pavel Kubelun CHROMIUM: drivers: ar8216: prevent device duplication in ar8xxx_dev_list If probe is called twice, once for PHY0 and a second time for PHY4, the same switch device will be added twice to ar8xxx_dev_list, while supposedly this list should have one element per hardware switch present in the system. While no negative impact have been observed, it does happen if a platform instanciates these two PHYs from device-tree, as an example. Change-Id: Iddcbdf7d4adacb0af01975b73f8e56b4582e894e Signed-off-by: Mathieu Olivari Reviewed-on: https://chromium-review.googlesource.com/234790 Reviewed-by: Matthias Kaehlcke Reviewed-by: Toshi Kikuchi Tested-by: Toshi Kikuchi --- diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c index d575043629..6c670dd75f 100644 --- a/target/linux/generic/files/drivers/net/phy/ar8216.c +++ b/target/linux/generic/files/drivers/net/phy/ar8216.c @@ -2171,6 +2171,8 @@ ar8xxx_phy_probe(struct phy_device *phydev) swdev->devname, swdev->name, priv->chip_rev, dev_name(&priv->mii_bus->dev)); + list_add(&priv->list, &ar8xxx_dev_list); + found: priv->use_count++; @@ -2199,8 +2201,6 @@ found: phydev->priv = priv; - list_add(&priv->list, &ar8xxx_dev_list); - mutex_unlock(&ar8xxx_dev_list_lock); return 0;