From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 05D7D200A6 for ; Fri, 21 Jul 2023 19:03:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7CEF4C433C9; Fri, 21 Jul 2023 19:03:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689966224; bh=aGWAJdA4UGhYuvO+CutXyqZZMSESuj3kgaCsoS2Yjuo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zgOUCewpM9uC1fk8Sb8txhy6C3o2OFsKHW1c/DOdg/xmmFgIUIdTELelsgq94SUF5 QhBIHAkcNQkm5xdVr2CnfEnDpIXZAlCPsBM0StpTzpRhI5nDOuOTryOnj8NFzHGSUb KZHjMN3zLJ+z7ntFsdxmR5AFiBNYg4fy49czCWak= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tony Lindgren , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Sasha Levin Subject: [PATCH 5.15 269/532] serial: 8250: omap: Fix freeing of resources on failed register Date: Fri, 21 Jul 2023 18:02:53 +0200 Message-ID: <20230721160628.933847940@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230721160614.695323302@linuxfoundation.org> References: <20230721160614.695323302@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Tony Lindgren [ Upstream commit b9ab22c2bc8652324a803b3e2be69838920b4025 ] 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 Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20230508082014.23083-2-tony@atomide.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- 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 index 078a7028ee5a2..6fa0e3ca469a0 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -1469,7 +1469,9 @@ 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; } -- 2.39.2