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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 D8114C433B4 for ; Tue, 27 Apr 2021 07:43:52 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 3EB7C613AA for ; Tue, 27 Apr 2021 07:43:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3EB7C613AA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=rock-chips.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=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:MIME-Version:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-Id:Date:Subject:Cc: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=Urbp2tkDgRX8Mky9dw1A9MepJqqHLgiMXMIv2oC0Nsw=; b=U7xTKZPmswmv9o1/+OkvWa3z7p zyWtKpZZNIosVmok95ZmDCNnjLhW5lfL72xC56zla7jPi5ccerLsSf2jVsaxA9jKhJAViEjruH81h ywi4foqgT9weJVP65UEezaeyJ/KPfcTKMOkWf4yOPm2CNZVs08Zyse3OIJvolWNnFuMaWB8rNnpBU cyK9oUC8iKpNqQObz0wMF7ape/830+jMDZKQ3PdXveJjg2Jn2LSzt/maHnexc86Sdq5ItysqcqOPG Wwio4cTV5F5/2Dzg2xNbK6i5s6bi/wPPsR3WtStTdNtQM9UcDUIKMAXHjtbxcUdMVvUDPvtnkQO3D dnnFupIg==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lbILi-000zd6-MY; Tue, 27 Apr 2021 07:41:39 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lbII4-000z9p-Bd; Tue, 27 Apr 2021 07:37:52 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Message-Id:Date:Subject:Cc:To:From: Sender:Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To:References; bh=ukx7ZfTSUeH5kxFIjKghPbL714R8E0BG+Xo785FPvew=; b=UxIiTU41eOWg4l3yNrq87sqFg6 WRA4tXsdy/nUpmDGVrQSWPX/HKTs/Lua1aQ2f127SGCFIlrw7Nhx0fnmR4Fa+qpatQe37q1c7sOqw CYGn2AlUC1YnC7xUzcyns/4xpeSBtQOAZw63guVRxX+/WSqlvIl4Shcl1h4LQhRmaP4DFZJ3PV8ea lSCHwWFH4GJ8iRhV03yzvAWukmPOWhBkOSSKahScXdhw00fqKD+0/6IWVz7XZ2M8cusUxaDBpoaxW ch1Pkpy7IKeqBBQB7/RvEeOYg/zR7RxLZG2MkLAio9LWse+2dmY3uXmt1Xk1DXy+W7/T3O2oQ3Yqg 4JacprcA==; Received: from lucky1.263xmail.com ([211.157.147.132]) by bombadil.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lbIHw-00GVkf-Kz; Tue, 27 Apr 2021 07:37:47 +0000 Received: from localhost (unknown [192.168.167.235]) by lucky1.263xmail.com (Postfix) with ESMTP id C2753F39DC; Tue, 27 Apr 2021 15:37:36 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ADDR-CHECKED4: 1 X-ANTISPAM-LEVEL: 2 X-ABS-CHECKED: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (postfix) whith ESMTP id P2750T140648996910848S1619509055243892_; Tue, 27 Apr 2021 15:37:36 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: X-RL-SENDER: jon.lin@rock-chips.com X-SENDER: jon.lin@rock-chips.com X-LOGIN-NAME: jon.lin@rock-chips.com X-FST-TO: broonie@kernel.org X-RCPT-COUNT: 8 X-SENDER-IP: 58.22.7.114 X-ATTACHMENT-NUM: 0 X-System-Flag: 0 From: Jon Lin To: broonie@kernel.org Cc: heiko@sntech.de, linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@esmil.dk, Jon Lin Subject: [PATCH v2 1/8] spi: rockchip: Set rx_fifo interrupt waterline base on transfer item Date: Tue, 27 Apr 2021 15:37:26 +0800 Message-Id: <20210427073733.31419-1-jon.lin@rock-chips.com> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210427_003744_867639_1D064CD8 X-CRM114-Status: GOOD ( 13.48 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 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 The error here is to calculate the width as 8 bits. In fact, 16 bits should be considered. Signed-off-by: Jon Lin --- drivers/spi/spi-rockchip.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index 52d6259d96ed..406ea3c6abd9 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -540,8 +540,8 @@ static int rockchip_spi_config(struct rockchip_spi *rs, * interrupt exactly when the fifo is full doesn't seem to work, * so we need the strict inequality here */ - if (xfer->len < rs->fifo_len) - writel_relaxed(xfer->len - 1, rs->regs + ROCKCHIP_SPI_RXFTLR); + if ((xfer->len / rs->n_bytes) < rs->fifo_len) + writel_relaxed(xfer->len / rs->n_bytes - 1, rs->regs + ROCKCHIP_SPI_RXFTLR); else writel_relaxed(rs->fifo_len / 2 - 1, rs->regs + ROCKCHIP_SPI_RXFTLR); -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel