From patchwork Mon Sep 21 06:13:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Q2h1bmZlbmcgWXVuICjkupHmmKXls7Ap?= X-Patchwork-Id: 11788359 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AE64D59D for ; Mon, 21 Sep 2020 06:17:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 91EAB2085B for ; Mon, 21 Sep 2020 06:17:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="kbJ4MNvs" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726242AbgIUGRF (ORCPT ); Mon, 21 Sep 2020 02:17:05 -0400 Received: from Mailgw01.mediatek.com ([1.203.163.78]:32638 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726011AbgIUGRF (ORCPT ); Mon, 21 Sep 2020 02:17:05 -0400 X-UUID: cefb740919664e95868c211ba93a897d-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=qI3X9MwE9sMRTnQRdhPZhEZddjHAueHKnEny+Zk541Y=; b=kbJ4MNvsBOgJQ+AIltUz3w/dMmKx8/gWAgYwmGoOFMj4CJv5aGc6tMaLJ/80FMTgtRHZaQk/OLv4cUufCMfE8bHiBPtnat86dgJkSlgGNKfCKpu1GvjhrzJKtv8DUz8CUnYbFsHPFV8rWFHjaP1WECK6J9YheAKhtoUmXdqjPuI=; X-UUID: cefb740919664e95868c211ba93a897d-20200921 Received: from mtkcas34.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 2077247481; Mon, 21 Sep 2020 14:17:00 +0800 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; Mon, 21 Sep 2020 14:16:59 +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 14:16:57 +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 , Mathias Nyman Subject: [PATCH v4 03/11] usb: pci-quirks: convert to readl_poll_timeout_atomic() Date: Mon, 21 Sep 2020 14:13:27 +0800 Message-ID: <1600668815-12135-3-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: 421069FA6C9AA675FB54CB2DE9B79D16F9C9FB5D8FC8F7F833225D52AF36DAA72000:8 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Use readl_poll_timeout_atomic() to simplify code Cc: Mathias Nyman Signed-off-by: Chunfeng Yun --- v2~v4: no changes --- drivers/usb/host/pci-quirks.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index b8961c0..8920566 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -16,6 +16,7 @@ #include #include #include +#include #include @@ -1012,15 +1013,9 @@ static int handshake(void __iomem *ptr, u32 mask, u32 done, { u32 result; - do { - result = readl(ptr); - result &= mask; - if (result == done) - return 0; - udelay(delay_usec); - wait_usec -= delay_usec; - } while (wait_usec > 0); - return -ETIMEDOUT; + return readl_poll_timeout_atomic(ptr, result, + ((result & mask) == done), + delay_usec, wait_usec); } /*