From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5563AC4332F for ; Wed, 23 Nov 2022 09:06:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237066AbiKWJG1 (ORCPT ); Wed, 23 Nov 2022 04:06:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237065AbiKWJGU (ORCPT ); Wed, 23 Nov 2022 04:06:20 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7DA26105A9E for ; Wed, 23 Nov 2022 01:06:03 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 21C1DB81EE5 for ; Wed, 23 Nov 2022 09:06:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8FB8BC433D6; Wed, 23 Nov 2022 09:06:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1669194360; bh=wuJWHiB/xj696LBlF+zyBT8fZqHcArXBnnn52U7FBZk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IpkqAxnB1njH4yXW+uZKTr8Ekr+6bxr5SeZwBnhytzRyiHHRI5XpyD7y6UNiBRD33 QeNp9A4IFZsPEQLSYWXjxbv4GN2jx4UKOZlBotzm9c4jCe4MvNoMSL28GrmhCbIsm5 RkQ7fGuQoocvt7l6pZIO2oLGEpjoTyhOuQ1QG5UQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tony Lindgren , Sasha Levin Subject: [PATCH 4.19 056/114] serial: 8250: omap: Flush PM QOS work on remove Date: Wed, 23 Nov 2022 09:50:43 +0100 Message-Id: <20221123084554.122258540@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221123084551.864610302@linuxfoundation.org> References: <20221123084551.864610302@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Tony Lindgren [ Upstream commit d0b68629bd2fb61e0171a62f2e8da3db322f5cf6 ] Rebinding 8250_omap in a loop will at some point produce a warning for kernel/power/qos.c:296 cpu_latency_qos_update_request() with error "cpu_latency_qos_update_request called for unknown object". Let's flush the possibly pending PM QOS work scheduled from omap8250_runtime_suspend() before we disable runtime PM. Fixes: 61929cf0169d ("tty: serial: Add 8250-core based omap driver") Signed-off-by: Tony Lindgren Link: https://lore.kernel.org/r/20221028110044.54719-1-tony@atomide.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/serial/8250/8250_omap.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index b81fb44e2bd7..8cf4819312f5 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -1262,6 +1262,7 @@ static int omap8250_remove(struct platform_device *pdev) pm_runtime_dont_use_autosuspend(&pdev->dev); pm_runtime_put_sync(&pdev->dev); + flush_work(&priv->qos_work); pm_runtime_disable(&pdev->dev); serial8250_unregister_port(priv->line); pm_qos_remove_request(&priv->pm_qos_request); -- 2.35.1