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 D5CAAE7C4E7 for ; Wed, 4 Oct 2023 18:07:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243831AbjJDSHK (ORCPT ); Wed, 4 Oct 2023 14:07:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243827AbjJDSHH (ORCPT ); Wed, 4 Oct 2023 14:07:07 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ED0209E for ; Wed, 4 Oct 2023 11:07:03 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3AEACC433C7; Wed, 4 Oct 2023 18:07:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1696442823; bh=7wrCc1L429Nm5i+Ty3Y2Wjb0JAkwd9SufH44hrM+cy4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gR8MXqOyTWnF68cqeUal8sBzaMTkOYEDx1m//zuSXFZ9sY+S1DNrLlWd2Me3AAVc6 icY7bD+UqtMXLpvh2zFbXFlUntlANtn/vQaQc4SjDPWeKvJxqnmaBT6XtT8Nok0igN 0UPhspeg3yDCm++fkH85WF1HnnaUEz/+KjNvNr3Q= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Julien Panis , Tony Lindgren , Sasha Levin Subject: [PATCH 5.15 093/183] bus: ti-sysc: Use fsleep() instead of usleep_range() in sysc_reset() Date: Wed, 4 Oct 2023 19:55:24 +0200 Message-ID: <20231004175207.806727403@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231004175203.943277832@linuxfoundation.org> References: <20231004175203.943277832@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Julien Panis [ Upstream commit d929b2b7464f95ec01e47f560b1e687482ba8929 ] The am335x-evm started producing boot errors because of subtle timing changes: Unhandled fault: external abort on non-linefetch (0x1008) at 0xf03c1010 ... sysc_reset from sysc_probe+0xf60/0x1514 sysc_probe from platform_probe+0x5c/0xbc ... The fix consists in using the appropriate sleep function in sysc reset. For flexible sleeping, fsleep is recommended. Here, sysc delay parameter can take any value in [0 - 255] us range. As a result, fsleep() should be used, calling udelay() for a sysc delay lower than 10 us. Signed-off-by: Julien Panis Fixes: e709ed70d122 ("bus: ti-sysc: Fix missing reset delay handling") Message-ID: <20230821-fix-ti-sysc-reset-v1-1-5a0a5d8fae55@baylibre.com> Signed-off-by: Tony Lindgren Signed-off-by: Sasha Levin --- drivers/bus/ti-sysc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c index 74ab6cf031ce0..dacda1eb140cf 100644 --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -2096,8 +2096,7 @@ static int sysc_reset(struct sysc *ddata) } if (ddata->cfg.srst_udelay) - usleep_range(ddata->cfg.srst_udelay, - ddata->cfg.srst_udelay * 2); + fsleep(ddata->cfg.srst_udelay); if (ddata->post_reset_quirk) ddata->post_reset_quirk(ddata); -- 2.40.1