From: Bixuan Cui <cuibixuan@huawei.com>
To: <b-liu@ti.com>, <gregkh@linuxfoundation.org>
Cc: <john.wanghui@huawei.com>, <linux-usb@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH -next] usb: musb: fix PM reference leak in musb_irq_work()
Date: Thu, 8 Apr 2021 17:18:36 +0800 [thread overview]
Message-ID: <20210408091836.55227-1-cuibixuan@huawei.com> (raw)
pm_runtime_get_sync will increment pm usage counter even it failed.
thus a pairing decrement is needed.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Bixuan Cui <cuibixuan@huawei.com>
---
drivers/usb/musb/musb_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index fc0457db62e1..8f09a387b773 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -2070,7 +2070,7 @@ static void musb_irq_work(struct work_struct *data)
struct musb *musb = container_of(data, struct musb, irq_work.work);
int error;
- error = pm_runtime_get_sync(musb->controller);
+ error = pm_runtime_resume_and_get(musb->controller);
if (error < 0) {
dev_err(musb->controller, "Could not enable: %i\n", error);
reply other threads:[~2021-04-08 9:19 UTC|newest]
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