From patchwork Fri Feb 11 03:43:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jon Lin X-Patchwork-Id: 12742803 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D9795C433EF for ; Fri, 11 Feb 2022 03:47:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: 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: List-Owner; bh=HBmrkVW8YKWff1Co1YdvkBUpPiIpm5uCsecT2tVSqSI=; b=MiMwhG3ukEGtJs VlBBkRPGPusn/K/CvAJVecO+VZW1+md0MN4j0/p2CGoOSAWRkO6LlK0Vtc90dhrd4PDPhzzeo+mVU 9zgvwQodURUv2/zUpFM+2weefYApo8ax5WA/g8zVGlsDEwW+PNflURUMPZJ7gqT1KZQ0rwXgxQyys Lz9iYA7P1AeWbqAL5mUbdHVyn5W2yP8RWehu4qT1ATynuN655SEklpj+Kdm1yCX0M0+tr7YIlFFj2 AuSiwdKd9DkReTlrTCUGFnvpMGBmlBBhnJ5SZdyr88QHVgs5jrnUae927HZ3ULGEzY1ddcpP7w09y 4ZYdWWfaEOXj0pkJgQlA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nIMsV-005cQH-3Z; Fri, 11 Feb 2022 03:45:47 +0000 Received: from mail-m17664.qiye.163.com ([59.111.176.64]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nIMqn-005bUB-Oj; Fri, 11 Feb 2022 03:44:04 +0000 Received: from localhost.localdomain (unknown [58.22.7.114]) by mail-m17664.qiye.163.com (Hmail) with ESMTPA id 395A4140168; Fri, 11 Feb 2022 11:43:52 +0800 (CST) 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, Jon Lin Subject: [PATCH 5/6] spi: rockchip: terminate dma transmission when slave abort Date: Fri, 11 Feb 2022 11:43:42 +0800 Message-Id: <20220211034344.4130-6-jon.lin@rock-chips.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220211034344.4130-1-jon.lin@rock-chips.com> References: <20220211034344.4130-1-jon.lin@rock-chips.com> X-HM-Spam-Status: e1kfGhgUHx5ZQUtXWQgPGg8OCBgUHx5ZQUlOS1dZCBgUCR5ZQVlLVUtZV1 kWDxoPAgseWUFZKDYvK1lXWShZQUhPN1dZLVlBSVdZDwkaFQgSH1lBWRoYSExWS0NLTR5LTR5IQx 0ZVRMBExYaEhckFA4PWVdZFhoPEhUdFFlBWVVLWQY+ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6NiI6UTo5KT5JTx46Ng0TF0wa TTMwFAtVSlVKTU9PTk5KS0hJTUlPVTMWGhIXVREUFVUXEhU7CRQYEFYYExILCFUYFBZFWVdZEgtZ QVlOQ1VJSVVMVUpKT1lXWQgBWUFISEhJNwY+ X-HM-Tid: 0a7ee6e14e4dda2fkuws395a4140168 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220210_194402_037574_C4C4EEDA X-CRM114-Status: UNSURE ( 9.29 ) X-CRM114-Notice: Please train this message. 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 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org After slave abort, all DMA should be stopped, or it will affect the next transmission: [ 31.693877] Unable to handle kernel paging request at virtual address ffffff8105a2a7c0 [ 31.694643] Mem abort info: [ 31.694898] ESR = 0x96000045 [ 31.695179] EC = 0x25: DABT (current EL), IL = 32 bits [ 31.695653] SET = 0, FnV = 0 [ 31.695931] EA = 0, S1PTW = 0 [ 31.696218] Data abort info: [ 31.696485] ISV = 0, ISS = 0x00000045 [ 31.696832] CM = 0, WnR = 1 [ 31.697112] swapper pgtable: 4k pages, 39-bit VAs, pgdp=000000000142f000 [ 31.697713] [ffffff8105a2a7c0] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000 [ 31.698502] Internal error: Oops: 96000045 [#1] SMP [ 31.698943] Modules linked in: [ 31.699235] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.10.43 #8 [ 31.699895] Hardware name: Rockchip RK3588 EVB1 LP4 V10 Board (DT) [ 31.700455] pstate: 60400089 (nZCv daIf +PAN -UAO -TCO BTYPE=--) [ 31.701000] pc : rockchip_spi_slave_abort+0x150/0x18c [ 31.701456] lr : rockchip_spi_slave_abort+0x78/0x18c Signed-off-by: Jon Lin --- drivers/spi/spi-rockchip.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index 5457af616a44..3d4e95eda4a6 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -617,8 +617,6 @@ static int rockchip_spi_slave_abort(struct spi_controller *ctlr) if (atomic_read(&rs->state) & RXDMA) { dmaengine_pause(ctlr->dma_rx); status = dmaengine_tx_status(ctlr->dma_rx, ctlr->dma_rx->cookie, &state); - dmaengine_terminate_sync(ctlr->dma_rx); - atomic_set(&rs->state, 0); if (status == DMA_ERROR) { rs->rx = rs->xfer->rx_buf; rs->xfer->len = 0; @@ -648,6 +646,11 @@ static int rockchip_spi_slave_abort(struct spi_controller *ctlr) } out: + if (atomic_read(&rs->state) & RXDMA) + dmaengine_terminate_sync(ctlr->dma_rx); + if (atomic_read(&rs->state) & TXDMA) + dmaengine_terminate_sync(ctlr->dma_tx); + atomic_set(&rs->state, 0); spi_enable_chip(rs, false); rs->slave_abort = true; spi_finalize_current_transfer(ctlr);