From patchwork Mon Dec 5 08:02:59 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Wu X-Patchwork-Id: 9460743 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3A13560459 for ; Mon, 5 Dec 2016 10:09:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 30E0B22ADC for ; Mon, 5 Dec 2016 10:09:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2591626242; Mon, 5 Dec 2016 10:09:10 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id BE4FF22ADC for ; Mon, 5 Dec 2016 10:09:09 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1cDqBQ-0003r3-02; Mon, 05 Dec 2016 10:07:40 +0000 Received: from lucky1.263xmail.com ([211.157.147.135]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1cDqBK-0003KR-PH; Mon, 05 Dec 2016 10:07:37 +0000 Received: from david.wu?rock-chips.com (unknown [192.168.167.84]) by lucky1.263xmail.com (Postfix) with ESMTP id 9FCF0827; Mon, 5 Dec 2016 18:06:58 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 1 X-MAIL-DELIVERY: 0 X-KSVirus-check: 0 X-ABS-CHECKED: 4 Received: from localhost.localdomain (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id F312A3E6; Mon, 5 Dec 2016 18:06:57 +0800 (CST) X-RL-SENDER: david.wu@rock-chips.com X-FST-TO: heiko@sntech.de X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: david.wu@rock-chips.com X-UNIQUE-TAG: <930e1668608e35516f0d989fe3fc0991> X-ATTACHMENT-NUM: 0 X-SENDER: wdc@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 3219U9QYEM; Mon, 05 Dec 2016 18:06:59 +0800 (CST) From: David Wu To: heiko@sntech.de, wsa@the-dreams.de Subject: [PATCH] i2c: rk3x: keep i2c irq ON in suspend Date: Mon, 5 Dec 2016 16:02:59 +0800 Message-Id: <1480924979-13450-1-git-send-email-david.wu@rock-chips.com> X-Mailer: git-send-email 1.9.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161205_020735_162373_4F95D77B X-CRM114-Status: UNSURE ( 6.37 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dianders@chromium.org, linux-rockchip@lists.infradead.org, linux-i2c@vger.kernel.org, David Wu , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP During suspend there may still be some i2c access happening. And if we don't keep i2c irq ON, there may be i2c access timeout if i2c is in irq mode of operation. Signed-off-by: David Wu --- drivers/i2c/busses/i2c-rk3x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c index df22066..67af32a 100644 --- a/drivers/i2c/busses/i2c-rk3x.c +++ b/drivers/i2c/busses/i2c-rk3x.c @@ -1261,7 +1261,7 @@ static int rk3x_i2c_probe(struct platform_device *pdev) } ret = devm_request_irq(&pdev->dev, irq, rk3x_i2c_irq, - 0, dev_name(&pdev->dev), i2c); + IRQF_NO_SUSPEND, dev_name(&pdev->dev), i2c); if (ret < 0) { dev_err(&pdev->dev, "cannot request IRQ\n"); return ret;