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=-14.2 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 D7DF7C43464 for ; Mon, 21 Sep 2020 06:26:24 +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 8A4BB20708 for ; Mon, 21 Sep 2020 06:26:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="qepfWuLb"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="ZbFpSqUf" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8A4BB20708 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: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:In-Reply-To:References:List-Owner; bh=B766VInyE6N9sw38K1FCFyNzssKx8Ksr4ZPu6j1Znak=; b=qepfWuLbD3BN80Kcdo2e6dFMxY vyQH5Juqt+lx2ZJilelshQSchMhf7x+FofBOeJisYfseBU9kKHBjj+crsh2pUvMlJaWmlvssB9Srk CAkyk1S1EszpKW3tOxLrX0EEawPRVG3GODoUzumdS3+oaeAqYs3OBulQsWQ9PfZKZ555+K9h95Kl6 oimlt5X2XvRiE2Tq+EC2lFHepIaPrz/B6BnkesyqA80QWotgKwwSlwkBT8Ch1wZl9WIBywp9BYg8a N1+cSKfelenG+wvC5noIQKcM5UhcIfa9yOWOG6MfqzhsCGHe1M66Kwsgl2wtCWyz6H48Wmj/uNeQy TpZaOAZA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKFFs-0005Xn-DR; Mon, 21 Sep 2020 06:24:52 +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 1kKFFg-0005Sd-HU; Mon, 21 Sep 2020 06:24:41 +0000 X-UUID: 1954b4a3ccf2426b83ebc44096fca46c-20200920 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:Message-ID:Date:Subject:CC:To:From; bh=6ZOWN7ki1sN531xAD52X8GiFWf24OghgpbzynrNkwy8=; b=ZbFpSqUfrpltQOQOasvH2BT0nEwirQWUMaZeCkE2hHbhRc1ak1xTCq1696ItuU2e4J4MzGINAlyb4/BU8j8kl9dPF8Jvnx4mD+CkvCR2nbE5g1TDCH+U9ffX1YpxKbCcZYiNvRP4j4cAKJD6U1rR6RhyrqY7KoV4LxlxBe7S9JI=; X-UUID: 1954b4a3ccf2426b83ebc44096fca46c-20200920 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 885030643; Sun, 20 Sep 2020 22:24:38 -0800 Received: from MTKMBS31N1.mediatek.inc (172.27.4.69) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 20 Sep 2020 23:16:58 -0700 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by MTKMBS31N1.mediatek.inc (172.27.4.69) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 21 Sep 2020 14:16:56 +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; Mon, 21 Sep 2020 14:16:54 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman , Felipe Balbi Subject: [PATCH v4 01/11] usb: early: convert to readl_poll_timeout_atomic() Date: Mon, 21 Sep 2020 14:13:25 +0800 Message-ID: <1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty MIME-Version: 1.0 X-TM-SNTS-SMTP: 2F03555C4872A9C51584CA060F9A514A5CB38BC9E5EB911970C0BACFA9D73A672000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200921_022440_723523_CAB67E01 X-CRM114-Status: GOOD ( 15.07 ) 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: Sumit Garg , Daniel Thompson , linux-usb@vger.kernel.org, Mathias Nyman , Arnd Bergmann , Mathias Nyman , Jann Horn , Jason Yan , Chuhong Yuan , "Gustavo A. R. Silva" , linux-kernel@vger.kernel.org, Saurav Girepunje , Chunfeng Yun , "Ben Dooks \(Codethink\)" , linux-mediatek@lists.infradead.org, "Eric W. Biederman" , Matthias Brugger , Lee Jones , Sergei Shtylyov , linux-arm-kernel@lists.infradead.org, Lu Baolu 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 Cc: Lu Baolu Cc: Mathias Nyman Signed-off-by: Chunfeng Yun Reviewed-by: Jann Horn --- v4: add reviewed-by Jann v2~v3: no changes --- drivers/usb/early/xhci-dbc.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c index c050776..be4ecba 100644 --- a/drivers/usb/early/xhci-dbc.c +++ b/drivers/usb/early/xhci-dbc.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -135,16 +136,9 @@ static int handshake(void __iomem *ptr, u32 mask, u32 done, int wait, int delay) { u32 result; - do { - result = readl(ptr); - result &= mask; - if (result == done) - return 0; - udelay(delay); - wait -= delay; - } while (wait > 0); - - return -ETIMEDOUT; + return readl_poll_timeout_atomic(ptr, result, + ((result & mask) == done), + delay, wait); } static void __init xdbc_bios_handoff(void) -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel