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 X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14F3CCA9EC5 for ; Wed, 30 Oct 2019 15:57:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D594C2067D for ; Wed, 30 Oct 2019 15:57:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572451031; bh=owHE3ZeIOv3rXmhivjkG2BGzQ+rYjTJYyoFrtT9JlVk=; h=From:To:Cc:Subject:Date:List-ID:From; b=GNZtdJiJSMitQTqvRliB+l7sStVb9LaYOzRSyQgyiNi7Jt8d6ezJmGFztjBaU2nwY q0bFrG8pfVzQFHRIYxTd88h7rp3Hn83jRAFpJsw2GSRD7NmgXOMGEoDv/gx4Z4gvJS 72eEKxXJ3b4P8yZ+HlAthjm9rFXNcatyCtl3+NKY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728975AbfJ3P5K (ORCPT ); Wed, 30 Oct 2019 11:57:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:58668 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728966AbfJ3P5E (ORCPT ); Wed, 30 Oct 2019 11:57:04 -0400 Received: from sasha-vm.mshome.net (100.50.158.77.rev.sfr.net [77.158.50.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E484F2080F; Wed, 30 Oct 2019 15:57:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572451024; bh=owHE3ZeIOv3rXmhivjkG2BGzQ+rYjTJYyoFrtT9JlVk=; h=From:To:Cc:Subject:Date:From; b=fxt2F1mcsddmrjfezgfdTdThI8wCWQ7bS1RhQ/9ubb79hTAnpNM7wMifFlYUY4wFv rntahMkKOvgY2rfyBc9Pq4v13c/NCJOCWwfmU+6MmmXRelJOA5eT+QFh48gC4tRx4G H/iPyjV6rm0oaqWBTWqbF5wF4Sx8LPilQjeS73dk= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Axel Lin , Nishanth Menon , Mark Brown , Sasha Levin Subject: [PATCH AUTOSEL 4.9 01/18] regulator: ti-abb: Fix timeout in ti_abb_wait_txdone/ti_abb_clear_all_txdone Date: Wed, 30 Oct 2019 11:56:43 -0400 Message-Id: <20191030155700.10748-1-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Axel Lin [ Upstream commit f64db548799e0330897c3203680c2ee795ade518 ] ti_abb_wait_txdone() may return -ETIMEDOUT when ti_abb_check_txdone() returns true in the latest iteration of the while loop because the timeout value is abb->settling_time + 1. Similarly, ti_abb_clear_all_txdone() may return -ETIMEDOUT when ti_abb_check_txdone() returns false in the latest iteration of the while loop. Fix it. Signed-off-by: Axel Lin Acked-by: Nishanth Menon Link: https://lore.kernel.org/r/20190929095848.21960-1-axel.lin@ingics.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/regulator/ti-abb-regulator.c | 26 ++++++++------------------ 1 file changed, 8 insertions(+), 18 deletions(-) diff --git a/drivers/regulator/ti-abb-regulator.c b/drivers/regulator/ti-abb-regulator.c index d2f9942987535..6d17357b3a248 100644 --- a/drivers/regulator/ti-abb-regulator.c +++ b/drivers/regulator/ti-abb-regulator.c @@ -173,19 +173,14 @@ static int ti_abb_wait_txdone(struct device *dev, struct ti_abb *abb) while (timeout++ <= abb->settling_time) { status = ti_abb_check_txdone(abb); if (status) - break; + return 0; udelay(1); } - if (timeout > abb->settling_time) { - dev_warn_ratelimited(dev, - "%s:TRANXDONE timeout(%duS) int=0x%08x\n", - __func__, timeout, readl(abb->int_base)); - return -ETIMEDOUT; - } - - return 0; + dev_warn_ratelimited(dev, "%s:TRANXDONE timeout(%duS) int=0x%08x\n", + __func__, timeout, readl(abb->int_base)); + return -ETIMEDOUT; } /** @@ -205,19 +200,14 @@ static int ti_abb_clear_all_txdone(struct device *dev, const struct ti_abb *abb) status = ti_abb_check_txdone(abb); if (!status) - break; + return 0; udelay(1); } - if (timeout > abb->settling_time) { - dev_warn_ratelimited(dev, - "%s:TRANXDONE timeout(%duS) int=0x%08x\n", - __func__, timeout, readl(abb->int_base)); - return -ETIMEDOUT; - } - - return 0; + dev_warn_ratelimited(dev, "%s:TRANXDONE timeout(%duS) int=0x%08x\n", + __func__, timeout, readl(abb->int_base)); + return -ETIMEDOUT; } /** -- 2.20.1