From: Johan Hovold <johan@kernel.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alan Stern <stern@rowland.harvard.edu>,
linux-usb@vger.kernel.org, Johan Hovold <johan@kernel.org>,
stable <stable@vger.kernel.org>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Subject: [PATCH 1/2] USB: ehci-platform: fix companion-device leak
Date: Tue, 16 May 2017 16:26:13 +0200 [thread overview]
Message-ID: <20170516142614.15557-1-johan@kernel.org> (raw)
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
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/usb/host/ehci-platform.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
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;
--
2.13.0
next reply other threads:[~2017-05-16 14:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-16 14:26 Johan Hovold [this message]
2017-05-17 4:53 ` [PATCH 1/2] USB: ehci-platform: fix companion-device leak Yoshihiro Shimoda
2017-05-17 8:59 ` Johan Hovold
2017-05-18 1:50 ` Yoshihiro Shimoda
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