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Wed, 19 Aug 2020 04:52:50 -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; Wed, 19 Aug 2020 05:42:48 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by MTKMBS31DR.mediatek.inc (172.27.6.102) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 19 Aug 2020 20:42:42 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 19 Aug 2020 20:42:42 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman Subject: [PATCH 01/10] usb: early: convert to readl_poll_timeout_atomic() Date: Wed, 19 Aug 2020 20:40:56 +0800 Message-ID: <1597840865-26631-1-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: 11A0FBB927ECEBA7F7FD5B2A90D46DA3FD7D363E0C47726682BD5434B97E97B02000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200819_085254_550346_12A98033 X-CRM114-Status: GOOD ( 15.34 ) 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 , Mathias Nyman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Chunfeng Yun , linux-mediatek@lists.infradead.org, Matthias Brugger , Lee Jones , 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 --- 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