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 DFA15E7C4E9 for ; Wed, 4 Oct 2023 18:15:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244024AbjJDSPT (ORCPT ); Wed, 4 Oct 2023 14:15:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52054 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244027AbjJDSPS (ORCPT ); Wed, 4 Oct 2023 14:15:18 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 18BB9BF for ; Wed, 4 Oct 2023 11:15:15 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 47251C433C8; Wed, 4 Oct 2023 18:15:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1696443314; bh=95O6bv7uRaTurm19RTcilQlYsRtSa5gJcOdsA7s5es8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CtHvmmywUhiGaCKZ/wbBw3kZM72HFqKyp7585zeYOszZmzSukJfoSvn1JhIJXpBBI UoMWKkdmxre8pJlXZg07uAjWe5otF9pflKDM8KEMgv9EygCziezoavs50CCAtn1NfH Api0rsnYXxkwdWJ/W7mOFxgD5WG5piBtBzkFNSE4= 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 6.1 112/259] bus: ti-sysc: Use fsleep() instead of usleep_range() in sysc_reset() Date: Wed, 4 Oct 2023 19:54:45 +0200 Message-ID: <20231004175222.488859612@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231004175217.404851126@linuxfoundation.org> References: <20231004175217.404851126@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 6.1-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 ddde1427c90c7..6ac79417b5120 100644 --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -2166,8 +2166,7 @@ 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