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authorJohan Hovold <johan@kernel.org>2017-05-16 16:26:13 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-05-17 11:52:44 +0200
commita7415477a20448bbb7d13765784c0b29249a176f (patch)
tree1c323e463e4b02bfd9f8b81db1a6f1daa2a70bdd /drivers/usb
parent1f873d857b6c2fefb4dada952674aa01bcfb92bd (diff)
downloadlinux-a7415477a20448bbb7d13765784c0b29249a176f.tar.bz2
USB: ehci-platform: fix companion-device leak
Make sure do drop the reference taken to the companion device during resume. Fixes: d4d75128b8fd ("usb: host: ehci-platform: fix usb 1.1 device is not connected in system resume") Cc: stable <stable@vger.kernel.org> # 4.11 Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/host/ehci-platform.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index bc7b9be12f54..f1908ea9fbd8 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -384,8 +384,10 @@ static int ehci_platform_resume(struct device *dev)
}
companion_dev = usb_of_get_companion_dev(hcd->self.controller);
- if (companion_dev)
+ if (companion_dev) {
device_pm_wait_for_dev(hcd->self.controller, companion_dev);
+ put_device(companion_dev);
+ }
ehci_resume(hcd, priv->reset_on_resume);
return 0;