From: Dinghao Liu <dinghao.liu@zju.edu.cn>
To: dinghao.liu@zju.edu.cn, kjlu@umn.edu
Cc: Peter Chen <peter.chen@kernel.org>,
Pawel Laszczak <pawell@cadence.com>,
Roger Quadros <rogerq@kernel.org>,
Aswath Govindraju <a-govindraju@ti.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] usb: cdns3: Fix rumtime PM imbalance on error
Date: Wed, 7 Apr 2021 13:22:26 +0800 [thread overview]
Message-ID: <20210407052226.1056-1-dinghao.liu@zju.edu.cn> (raw)
When cdns3_gadget_start() fails, a pairing PM usage counter
decrement is needed to keep the counter balanced.
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
---
drivers/usb/cdns3/cdns3-gadget.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/cdns3/cdns3-gadget.c b/drivers/usb/cdns3/cdns3-gadget.c
index 582bfeceedb4..ad891a108aed 100644
--- a/drivers/usb/cdns3/cdns3-gadget.c
+++ b/drivers/usb/cdns3/cdns3-gadget.c
@@ -3255,8 +3255,11 @@ static int __cdns3_gadget_init(struct cdns *cdns)
pm_runtime_get_sync(cdns->dev);
ret = cdns3_gadget_start(cdns);
- if (ret)
+ if (ret) {
+ pm_runtime_mark_last_busy(cdns->dev);
+ pm_runtime_put_autosuspend(cdns->dev);
return ret;
+ }
/*
* Because interrupt line can be shared with other components in
--
2.17.1
next reply other threads:[~2021-04-07 5:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-07 5:22 Dinghao Liu [this message]
2021-04-10 1:06 ` [PATCH] usb: cdns3: Fix rumtime PM imbalance on error Peter Chen
2021-04-12 5:35 ` dinghao.liu
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