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=-11.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,MIME_BASE64_TEXT,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 A8BDDC43465 for ; Mon, 21 Sep 2020 06:17:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6268F20866 for ; Mon, 21 Sep 2020 06:17:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="nkPEa13K" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726402AbgIUGRM (ORCPT ); Mon, 21 Sep 2020 02:17:12 -0400 Received: from Mailgw01.mediatek.com ([1.203.163.78]:42163 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726149AbgIUGRI (ORCPT ); Mon, 21 Sep 2020 02:17:08 -0400 X-UUID: 8a75d16a3c1f4e118f9597f83e281977-20200921 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=iytLVyfwsqCD1g9UEuz02b2x3mx6gFmM96o8N8uXFCw=; b=nkPEa13Kx7DLe7rhGyBwYIL4BvhJ7xl68aY7+tcn/gPXaennJShaOnIOaikNLTrQSPieYcyyNEueRQsXicJ4bygdh1UE7WWag/tQyC+ARbfnUKe/IBSnYKnB/gmnDtBD2dJdLNpyBCyELFt3Opstqh41ZvPDaqldsrQwbXSmrog=; X-UUID: 8a75d16a3c1f4e118f9597f83e281977-20200921 Received: from mtkcas36.mediatek.inc [(172.27.4.253)] by mailgw01.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 2038064824; Mon, 21 Sep 2020 14:17:04 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by MTKMBS31N2.mediatek.inc (172.27.4.87) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 21 Sep 2020 14:17:04 +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 14:17:01 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman , Felipe Balbi CC: Mathias Nyman , Matthias Brugger , Chunfeng Yun , "Eric W. Biederman" , Sumit Garg , Lee Jones , Jann Horn , Jason Yan , Arnd Bergmann , Chuhong Yuan , "Gustavo A. R. Silva" , "Ben Dooks (Codethink)" , Saurav Girepunje , , , , , Sergei Shtylyov , Daniel Thompson Subject: [PATCH v4 05/11] usb: oxu210hp-hcd: convert to readl_poll_timeout_atomic() Date: Mon, 21 Sep 2020 14:13:29 +0800 Message-ID: <1600668815-12135-5-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com> References: <1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-TM-SNTS-SMTP: 980D8799D31CC841754718C45ED7A1AE8DFE241777DE81837D9B0AEB06BE52E02000:8 X-MTK: N Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org VXNlIHJlYWRsX3BvbGxfdGltZW91dF9hdG9taWMoKSB0byBzaW1wbGlmeSBjb2RlDQoNClNpZ25l ZC1vZmYtYnk6IENodW5mZW5nIFl1biA8Y2h1bmZlbmcueXVuQG1lZGlhdGVrLmNvbT4NCi0tLQ0K djJ+djQ6IG5vIGNoYW5nZXMNCi0tLQ0KIGRyaXZlcnMvdXNiL2hvc3Qvb3h1MjEwaHAtaGNkLmMg fCAyMSArKysrKysrKysrLS0tLS0tLS0tLS0NCiAxIGZpbGUgY2hhbmdlZCwgMTAgaW5zZXJ0aW9u cygrKSwgMTEgZGVsZXRpb25zKC0pDQoNCmRpZmYgLS1naXQgYS9kcml2ZXJzL3VzYi9ob3N0L294 dTIxMGhwLWhjZC5jIGIvZHJpdmVycy91c2IvaG9zdC9veHUyMTBocC1oY2QuYw0KaW5kZXggY2Zh N2RkMi4uMjdkYmJlMSAxMDA2NDQNCi0tLSBhL2RyaXZlcnMvdXNiL2hvc3Qvb3h1MjEwaHAtaGNk LmMNCisrKyBiL2RyaXZlcnMvdXNiL2hvc3Qvb3h1MjEwaHAtaGNkLmMNCkBAIC0yNCw2ICsyNCw3 IEBADQogI2luY2x1ZGUgPGxpbnV4L21vZHVsZXBhcmFtLmg+DQogI2luY2x1ZGUgPGxpbnV4L2Rt YS1tYXBwaW5nLmg+DQogI2luY2x1ZGUgPGxpbnV4L2lvLmg+DQorI2luY2x1ZGUgPGxpbnV4L2lv cG9sbC5oPg0KIA0KICNpbmNsdWRlIDxhc20vaXJxLmg+DQogI2luY2x1ZGUgPGFzbS91bmFsaWdu ZWQuaD4NCkBAIC03NDgsMTggKzc0OSwxNiBAQCBzdGF0aWMgaW50IGhhbmRzaGFrZShzdHJ1Y3Qg b3h1X2hjZCAqb3h1LCB2b2lkIF9faW9tZW0gKnB0ciwNCiAJCQkJCXUzMiBtYXNrLCB1MzIgZG9u ZSwgaW50IHVzZWMpDQogew0KIAl1MzIgcmVzdWx0Ow0KKwlpbnQgcmV0Ow0KIA0KLQlkbyB7DQot CQlyZXN1bHQgPSByZWFkbChwdHIpOw0KLQkJaWYgKHJlc3VsdCA9PSB+KHUzMikwKQkJLyogY2Fy ZCByZW1vdmVkICovDQotCQkJcmV0dXJuIC1FTk9ERVY7DQotCQlyZXN1bHQgJj0gbWFzazsNCi0J CWlmIChyZXN1bHQgPT0gZG9uZSkNCi0JCQlyZXR1cm4gMDsNCi0JCXVkZWxheSgxKTsNCi0JCXVz ZWMtLTsNCi0JfSB3aGlsZSAodXNlYyA+IDApOw0KLQlyZXR1cm4gLUVUSU1FRE9VVDsNCisJcmV0 ID0gcmVhZGxfcG9sbF90aW1lb3V0X2F0b21pYyhwdHIsIHJlc3VsdCwNCisJCQkJCSgocmVzdWx0 ICYgbWFzaykgPT0gZG9uZSB8fA0KKwkJCQkJIHJlc3VsdCA9PSBVMzJfTUFYKSwNCisJCQkJCTEs IHVzZWMpOw0KKwlpZiAocmVzdWx0ID09IFUzMl9NQVgpCQkvKiBjYXJkIHJlbW92ZWQgKi8NCisJ CXJldHVybiAtRU5PREVWOw0KKw0KKwlyZXR1cm4gcmV0Ow0KIH0NCiANCiAvKiBGb3JjZSBIQyB0 byBoYWx0IHN0YXRlIGZyb20gdW5rbm93biAoRUhDSSBzcGVjIHNlY3Rpb24gMi4zKSAqLw0KLS0g DQoxLjkuMQ0K 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 25982C43464 for ; Mon, 21 Sep 2020 06:17:28 +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 C9A7120719 for ; Mon, 21 Sep 2020 06:17:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="qBDnswbo"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="C8qTif4K" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C9A7120719 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-mediatek-bounces+linux-mediatek=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=qEpqkBF0baA4Llje3+8mDf7rvFtEQk7DEQO0PjB/358=; b=qBDnswbodAfUOWUkgQK01QGSI mwHRYa3cmYkfsvrKjUsjzl1Eb47KOnio4lPjgHl3Zci32cAQgmE9TLOqp1joK37udMTinSgOVf9Pl UuiIujeK6Ocj75dlWHjdHk4NH47kfgmmrpkNMyp1WNNrBo2HrG2qHPTPEEvPuS207/QUeFVg5HeWB Q2S4d1XnvX2L71cmFMXHi5S/dxFr0/nSYAGUKC5Jv4zlsoG17PoYWis06waU46nMqveUS8jrxk9rL 2LfMQCeXZfxch5EkhGwX8Myq6yR/AQLalX+ZX5Ilzt7eCyy3e0aN1c1TdVOo2J1/RguKTrP2xEC4B ASEta9K5A==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKF8V-0004We-9T; Mon, 21 Sep 2020 06:17:15 +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 1kKF8S-0004UN-VY; Mon, 21 Sep 2020 06:17:14 +0000 X-UUID: 0701e548f922465c84039125ea175ba8-20200920 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:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=iytLVyfwsqCD1g9UEuz02b2x3mx6gFmM96o8N8uXFCw=; b=C8qTif4Kk7EtshzWr7JlPVSVkGQsVfvPErZi/oT8egNaaA2nxRXHlbM8K2fO96tIgUVyixmuG4f4pmr7W2Xj1CJiBzzdHvZtV3rusXPIadlWecPAQwRp9eA0VB0LztasC5qyg7r4TyesOna0slrvzFK08Rhp/Mpiae0uONSFZ6w=; X-UUID: 0701e548f922465c84039125ea175ba8-20200920 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 735701890; Sun, 20 Sep 2020 22:17:05 -0800 Received: from MTKMBS31N2.mediatek.inc (172.27.4.87) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 20 Sep 2020 23:17:04 -0700 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by MTKMBS31N2.mediatek.inc (172.27.4.87) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 21 Sep 2020 14:17:04 +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 14:17:01 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman , Felipe Balbi Subject: [PATCH v4 05/11] usb: oxu210hp-hcd: convert to readl_poll_timeout_atomic() Date: Mon, 21 Sep 2020 14:13:29 +0800 Message-ID: <1600668815-12135-5-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com> References: <1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 980D8799D31CC841754718C45ED7A1AE8DFE241777DE81837D9B0AEB06BE52E02000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200921_021713_148756_681FF892 X-CRM114-Status: GOOD ( 16.43 ) X-BeenThere: linux-mediatek@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, 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Use readl_poll_timeout_atomic() to simplify code Signed-off-by: Chunfeng Yun --- v2~v4: 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-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek 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 C7F29C43463 for ; Mon, 21 Sep 2020 06:18:46 +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 61E6320719 for ; Mon, 21 Sep 2020 06:18:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="16YA2BIx"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="C8qTif4K" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 61E6320719 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=x4FJFiwNeIOPPM3oh5E3P9G5mxNvjI0Vr9p3ptFhALs=; b=16YA2BIx6fiurfEJlUFAcLgz7 JsGXeKE4phDbfUX/5mrvcxPKb5igyT6kiS51pMcqlViVoDcjewjLcq7DxKl1KnA6VylNkxDCWP/Gn 6BG0dXsnK75yeBCadcfkEbSvvs6YdkhOdNKYNP06nQsDHEYnW1xfEc7LqAaAyC/CqURfQJghj8RgU iLUtY1FIY4DwFzCV9wMYPWB0IYBZ9GQUmNAEuuLhotnDz3xuW1EM3TGeY9GA3WoOuj87e2yHdB2NT SXIDYnjHJ58j5abo0eljdmVGcVQVeLVPMOhWen4WUzgp2QQ5F4XJdx4xQOy6vdvCb+UggpGgZ65gh TwNq6tTGg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKF8a-0004Xm-NJ; Mon, 21 Sep 2020 06:17:20 +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 1kKF8S-0004UN-VY; Mon, 21 Sep 2020 06:17:14 +0000 X-UUID: 0701e548f922465c84039125ea175ba8-20200920 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:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=iytLVyfwsqCD1g9UEuz02b2x3mx6gFmM96o8N8uXFCw=; b=C8qTif4Kk7EtshzWr7JlPVSVkGQsVfvPErZi/oT8egNaaA2nxRXHlbM8K2fO96tIgUVyixmuG4f4pmr7W2Xj1CJiBzzdHvZtV3rusXPIadlWecPAQwRp9eA0VB0LztasC5qyg7r4TyesOna0slrvzFK08Rhp/Mpiae0uONSFZ6w=; X-UUID: 0701e548f922465c84039125ea175ba8-20200920 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 735701890; Sun, 20 Sep 2020 22:17:05 -0800 Received: from MTKMBS31N2.mediatek.inc (172.27.4.87) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 20 Sep 2020 23:17:04 -0700 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by MTKMBS31N2.mediatek.inc (172.27.4.87) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 21 Sep 2020 14:17:04 +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 14:17:01 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman , Felipe Balbi Subject: [PATCH v4 05/11] usb: oxu210hp-hcd: convert to readl_poll_timeout_atomic() Date: Mon, 21 Sep 2020 14:13:29 +0800 Message-ID: <1600668815-12135-5-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com> References: <1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 980D8799D31CC841754718C45ED7A1AE8DFE241777DE81837D9B0AEB06BE52E02000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200921_021713_148756_681FF892 X-CRM114-Status: GOOD ( 16.43 ) 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, 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 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~v4: 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