From: Tony Lindgren <tony@atomide.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
Peter Hurley <peter@hurleysoftware.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: "Andy Shevchenko" <andriy.shevchenko@intel.com>,
"Dhruva Gole" <d-gole@ti.com>,
"Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
"Johan Hovold" <johan@kernel.org>,
"Vignesh Raghavendra" <vigneshr@ti.com>,
linux-omap@vger.kernel.org, linux-serial@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/4] serial: 8250: omap: Fix freeing of resources on failed register
Date: Mon, 8 May 2023 11:20:11 +0300 [thread overview]
Message-ID: <20230508082014.23083-2-tony@atomide.com> (raw)
In-Reply-To: <20230508082014.23083-1-tony@atomide.com>
If serial8250_register_8250_port() fails, the SoC can hang as the
deferred PMQoS work will still run as is not flushed and removed.
Fixes: 61929cf0169d ("tty: serial: Add 8250-core based omap driver")
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
drivers/tty/serial/8250/8250_omap.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
--- a/drivers/tty/serial/8250/8250_omap.c
+++ b/drivers/tty/serial/8250/8250_omap.c
@@ -1532,7 +1532,9 @@ static int omap8250_probe(struct platform_device *pdev)
err:
pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_put_sync(&pdev->dev);
+ flush_work(&priv->qos_work);
pm_runtime_disable(&pdev->dev);
+ cpu_latency_qos_remove_request(&priv->pm_qos_request);
return ret;
}
--
2.40.1
next parent reply other threads:[~2023-05-08 8:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230508082014.23083-1-tony@atomide.com>
2023-05-08 8:20 ` Tony Lindgren [this message]
2023-05-08 9:55 ` [PATCH 1/4] serial: 8250: omap: Fix freeing of resources on failed register Ilpo Järvinen
2023-05-08 11:08 ` Tony Lindgren
2023-05-08 8:20 ` [PATCH 2/4] serial: 8250: omap: Fix imprecise external abort for omap_8250_pm() Tony Lindgren
2023-05-08 8:20 ` [PATCH 3/4] serial: 8250: omap: Fix life cycle issues for interrupt handlers Tony Lindgren
2023-05-08 8:20 ` [PATCH 4/4] serial: 8250: omap: Shut down on remove for console uart Tony Lindgren
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