From: cgel.zte@gmail.com
To: sudeep.holla@arm.com
Cc: cristian.marussi@arm.com, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Minghao Chi <chi.minghao@zte.com.cn>,
Zeal Robot <zealci@zte.com.cn>
Subject: [PATCH] firmware: arm_scmi: Avoid leak OF node on error
Date: Mon, 23 May 2022 11:11:16 +0000 [thread overview]
Message-ID: <20220523111116.2898-1-chi.minghao@zte.com.cn> (raw)
From: Minghao Chi <chi.minghao@zte.com.cn>
The OF node should be put before returning error in smc_chan_available(),
otherwise node's refcount will be leaked.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
---
drivers/firmware/arm_scmi/smc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/smc.c
index 745acfdd0b3d..43018be70edc 100644
--- a/drivers/firmware/arm_scmi/smc.c
+++ b/drivers/firmware/arm_scmi/smc.c
@@ -55,10 +55,10 @@ static irqreturn_t smc_msg_done_isr(int irq, void *data)
static bool smc_chan_available(struct device *dev, int idx)
{
struct device_node *np = of_parse_phandle(dev->of_node, "shmem", 0);
+ of_node_put(np);
if (!np)
return false;
- of_node_put(np);
return true;
}
--
2.25.1
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next reply other threads:[~2022-05-23 11:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-23 11:11 cgel.zte [this message]
2022-05-23 11:53 ` [PATCH] firmware: arm_scmi: Avoid leak OF node on error Johan Hovold
2022-05-23 13:27 ` Sudeep Holla
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