From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Bixuan Cui <cuibixuan@huawei.com>, Hulk Robot <hulkci@huawei.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sasha Levin <sashal@kernel.org>,
linux-usb@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 24/34] usb: musb: fix PM reference leak in musb_irq_work()
Date: Sun, 2 May 2021 10:04:24 -0400 [thread overview]
Message-ID: <20210502140434.2719553-24-sashal@kernel.org> (raw)
In-Reply-To: <20210502140434.2719553-1-sashal@kernel.org>
From: Bixuan Cui <cuibixuan@huawei.com>
[ Upstream commit 9535b99533904e9bc1607575aa8e9539a55435d7 ]
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>
Link: https://lore.kernel.org/r/20210408091836.55227-1-cuibixuan@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 166f68f639c2..70ef603f7bb9 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1932,7 +1932,7 @@ 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);
--
2.30.2
next prev parent reply other threads:[~2021-05-02 14:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210502140434.2719553-1-sashal@kernel.org>
2021-05-02 14:04 ` [PATCH AUTOSEL 5.4 07/34] usb: gadget: uvc: add bInterval checking for HS mode Sasha Levin
2021-05-02 14:04 ` [PATCH AUTOSEL 5.4 08/34] usb: webcam: Invalid size of Processing Unit Descriptor Sasha Levin
2021-05-02 14:04 ` [PATCH AUTOSEL 5.4 10/34] usb: gadget: f_uac2: validate input parameters Sasha Levin
2021-05-02 14:04 ` [PATCH AUTOSEL 5.4 11/34] usb: gadget: f_uac1: " Sasha Levin
2021-05-02 14:04 ` [PATCH AUTOSEL 5.4 12/34] usb: dwc3: gadget: Ignore EP queue requests during bus reset Sasha Levin
2021-05-02 14:04 ` [PATCH AUTOSEL 5.4 13/34] usb: xhci: Fix port minor revision Sasha Levin
2021-05-02 14:04 ` [PATCH AUTOSEL 5.4 18/34] usb: xhci-mtk: support quirk to disable usb2 lpm Sasha Levin
2021-05-02 14:04 ` [PATCH AUTOSEL 5.4 19/34] xhci: check control context is valid before dereferencing it Sasha Levin
2021-05-02 14:04 ` [PATCH AUTOSEL 5.4 20/34] xhci: fix potential array out of bounds with several interrupters Sasha Levin
2021-05-02 14:04 ` Sasha Levin [this message]
2021-05-02 14:04 ` [PATCH AUTOSEL 5.4 25/34] usb: core: hub: Fix PM reference leak in usb_port_resume() Sasha Levin
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