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=-12.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 1B929C2D0A7 for ; Thu, 10 Sep 2020 08:32:12 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ADD8821D79 for ; Thu, 10 Sep 2020 08:32:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="wMQPB9z0"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="n0byEN2T" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ADD8821D79 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-ID:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=BKSV7fIcpdqde8ixl8VvOzXIK8WN7egyRsOp3CWJ4qo=; b=wMQPB9z0ImZl6r5jYEjYMWG+1 WxXfPVwsWCsHs+G0MAd+8a2MWFWgkZWORuLaul7LiirRpLvfNHE7vSRzma67PI0GEido1X1wau+C6 0pxMaAvTA4rG8vT920ZMrbBq/RVTJHYPbwOicHVQkjr8QYr4wfewaPpN5saesCO6rFCNbK9et8Akp 2UK186ckpxTueLav3HNXRvihMfs370iCBvsM6q74biJL6lewHOSf+YdBTryTlNkWCaGCYaBHDCSS/ I/Bb3RsPJ830BRZzRU5nBKpG/C8s1V4d8CpbRHXWKVptWWvGig4wFsbYfM1Jbqt/ts2dWLYSc2mJA QMwRoBWnA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kGHyi-0004BY-T5; Thu, 10 Sep 2020 08:30:48 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kGHyd-000489-JA; Thu, 10 Sep 2020 08:30:44 +0000 X-UUID: 6923857f17e847bdb97c2b34209404d5-20200910 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=glUu4ILa56NmCzEya+FLhC/5JYoRtBGd30upHM8qMX0=; b=n0byEN2TcnjTVvzWIvOrH350bdt0qeQasqmPgdTyi8B8ekk4fOW/ohGrCqVeIMbvHoQ2RXQona1mnXxQkSbA2RUBjK9uThsGamM02Hefu9HFRNfx2CdCQSd7umkBOvJFG1ZaF9YywvyGXNzgywm68GwJPMW0UPeJIGzOuX1+Fdw=; X-UUID: 6923857f17e847bdb97c2b34209404d5-20200910 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1108411206; Thu, 10 Sep 2020 00:24:26 -0800 Received: from MTKMBS31DR.mediatek.inc (172.27.6.102) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 10 Sep 2020 01:24:07 -0700 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by MTKMBS31DR.mediatek.inc (172.27.6.102) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 10 Sep 2020 16:24:05 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 10 Sep 2020 16:24:04 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman Subject: [PATCH RESEND v3 05/11] usb: oxu210hp-hcd: convert to readl_poll_timeout_atomic() Date: Thu, 10 Sep 2020 16:21:46 +0800 Message-ID: <1599726112-4439-5-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1599726112-4439-1-git-send-email-chunfeng.yun@mediatek.com> References: <1599726112-4439-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: C5A2AC489B45A0F990228762FA8A7204B6D8C1A944092FAC6D1DCAFFC99CC7D52000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200910_043043_854531_443DA636 X-CRM114-Status: GOOD ( 15.45 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Felipe Balbi , Daniel Thompson , linux-usb@vger.kernel.org, Arnd Bergmann , Mathias Nyman , Sumit Garg , linux-kernel@vger.kernel.org, Jann Horn , Chuhong Yuan , Douglas Anderson , "Gustavo A. R. Silva" , Saurav Girepunje , Chunfeng Yun , Jason Yan , linux-mediatek@lists.infradead.org, "Eric W. Biederman" , Matthias Brugger , Lee Jones , Ben Dooks , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Use readl_poll_timeout_atomic() to simplify code Signed-off-by: Chunfeng Yun --- v2~v3: no changes --- drivers/usb/host/oxu210hp-hcd.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c index cfa7dd2..27dbbe1 100644 --- a/drivers/usb/host/oxu210hp-hcd.c +++ b/drivers/usb/host/oxu210hp-hcd.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -748,18 +749,16 @@ static int handshake(struct oxu_hcd *oxu, void __iomem *ptr, u32 mask, u32 done, int usec) { u32 result; + int ret; - do { - result = readl(ptr); - if (result == ~(u32)0) /* card removed */ - return -ENODEV; - result &= mask; - if (result == done) - return 0; - udelay(1); - usec--; - } while (usec > 0); - return -ETIMEDOUT; + ret = readl_poll_timeout_atomic(ptr, result, + ((result & mask) == done || + result == U32_MAX), + 1, usec); + if (result == U32_MAX) /* card removed */ + return -ENODEV; + + return ret; } /* Force HC to halt state from unknown (EHCI spec section 2.3) */ -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel