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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 92741C433F5 for ; Mon, 13 Sep 2021 22:38:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B45B61163 for ; Mon, 13 Sep 2021 22:38:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243252AbhIMWjv (ORCPT ); Mon, 13 Sep 2021 18:39:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:51756 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343790AbhIMWhC (ORCPT ); Mon, 13 Sep 2021 18:37:02 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D102161212; Mon, 13 Sep 2021 22:35:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1631572508; bh=6tkc3X78a6JqSYIbkoa8dgXd66NJvlqZK3pO3W7IVt4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D8X+E2lWDxbIW2i+MDtoi4dJU8bK2urR+NUuBOOVg+C7g4kceWc35m2iJzoArVE0b hMgmBn5YhS7SH0hxICfr7eLZtmizRzSumHNZls1nL99FnvQCqMAqTmw6XAOrKNujqk oq19kwCEENRukdV+NoE3Xb3WFCWKrkWW+BpItML6QxkneWDSUdDYCLqdosZk7jvV2E YqieHwD5HAp0enlkBFsY//+2ZHJ9JepeO5LtxiQ5rP4ZLa8h1nlzR0iWJQyXPk6iB1 e7PmZFLSKZZESnEs1R2tOVCDazvJTdg7raWGRGrpokF7RscX3M3FpssBZ08mE8DQTu WZwosQrcep0Yg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Radhey Shyam Pandey , Harini Katakam , Vinod Koul , Sasha Levin , dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 5.4 03/12] dmaengine: xilinx_dma: Set DMA mask for coherent APIs Date: Mon, 13 Sep 2021 18:34:55 -0400 Message-Id: <20210913223504.436087-3-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210913223504.436087-1-sashal@kernel.org> References: <20210913223504.436087-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Radhey Shyam Pandey [ Upstream commit aac6c0f90799d66b8989be1e056408f33fd99fe6 ] The xilinx dma driver uses the consistent allocations, so for correct operation also set the DMA mask for coherent APIs. It fixes the below kernel crash with dmatest client when DMA IP is configured with 64-bit address width and linux is booted from high (>4GB) memory. Call trace: [ 489.531257] dma_alloc_from_pool+0x8c/0x1c0 [ 489.535431] dma_direct_alloc+0x284/0x330 [ 489.539432] dma_alloc_attrs+0x80/0xf0 [ 489.543174] dma_pool_alloc+0x160/0x2c0 [ 489.547003] xilinx_cdma_prep_memcpy+0xa4/0x180 [ 489.551524] dmatest_func+0x3cc/0x114c [ 489.555266] kthread+0x124/0x130 [ 489.558486] ret_from_fork+0x10/0x3c [ 489.562051] ---[ end trace 248625b2d596a90a ]--- Signed-off-by: Radhey Shyam Pandey Reviewed-by: Harini Katakam Link: https://lore.kernel.org/r/1629363528-30347-1-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/xilinx/xilinx_dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index ce18bca45ff2..7729b8d22553 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -2703,7 +2703,7 @@ static int xilinx_dma_probe(struct platform_device *pdev) xdev->ext_addr = false; /* Set the dma mask bits */ - dma_set_mask(xdev->dev, DMA_BIT_MASK(addr_width)); + dma_set_mask_and_coherent(xdev->dev, DMA_BIT_MASK(addr_width)); /* Initialize the DMA engine */ xdev->common.dev = &pdev->dev; -- 2.30.2