From patchwork Mon Aug 22 18:53:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 12951136 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9BEB3C32774 for ; Mon, 22 Aug 2022 18:54:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237573AbiHVSy4 (ORCPT ); Mon, 22 Aug 2022 14:54:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237884AbiHVSyT (ORCPT ); Mon, 22 Aug 2022 14:54:19 -0400 Received: from mail.baikalelectronics.com (mail.baikalelectronics.com [87.245.175.230]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 398CE4057C; Mon, 22 Aug 2022 11:53:58 -0700 (PDT) Received: from mail (mail.baikal.int [192.168.51.25]) by mail.baikalelectronics.com (Postfix) with ESMTP id 1FA0FDA5; Mon, 22 Aug 2022 21:57:09 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.baikalelectronics.com 1FA0FDA5 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baikalelectronics.ru; s=mail; t=1661194629; bh=qcWnhDas3Rp2y4FM0RNcrHwFi0XdqwrSM2RgIhUVjFM=; h=From:To:CC:Subject:Date:In-Reply-To:References:From; b=GW4/xzsYh+PdHe/3J554tAYkNDswjivplT0nFg6aUrpCWkPU6HFzzmXmm6HJgO4hk HlnUx7ZO16taG1GRv9xxg3LJ/b/6UmDbpAiPW/iD7CjxCMaU8epXbBcsxUEFHAWHj1 0rizbVmZhtF7TNkjSeA9LtmxvNiexe3yeZL0fiT4= Received: from localhost (192.168.168.10) by mail (192.168.51.25) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 22 Aug 2022 21:53:54 +0300 From: Serge Semin To: Gustavo Pimentel , Vinod Koul , Rob Herring , Bjorn Helgaas , Lorenzo Pieralisi , Jingoo Han , Frank Li , Manivannan Sadhasivam CC: Serge Semin , Serge Semin , Alexey Malahov , Pavel Parkhomenko , =?utf-8?q?Krzys?= =?utf-8?q?ztof_Wilczy=C5=84ski?= , , , , Gustavo Pimentel Subject: [PATCH RESEND v5 10/24] dmaengine: dw-edma: Fix DebugFS reg entry type Date: Mon, 22 Aug 2022 21:53:18 +0300 Message-ID: <20220822185332.26149-11-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20220822185332.26149-1-Sergey.Semin@baikalelectronics.ru> References: <20220822185332.26149-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org debugfs_entries structure declared in the dw-edma-v0-debugfs.c module contains the DebugFS node' register address. The address is declared as dma_addr_t type, but first it's assigned with virtual CPU IOMEM address and then it's cast back to the virtual address. Even though the castes sandwich will unlikely cause any problem since normally DMA address is at least of the same size as the CPU virtual address, it's at the very least redundant if not to say logically incorrect. Let's fix it by just stop casting the pointer back and worth and just preserve the address as a pointer to void with __iomem qualifier. Fixes: 305aebeff879 ("dmaengine: Add Synopsys eDMA IP version 0 debugfs support") Signed-off-by: Serge Semin Reviewed-by: Manivannan Sadhasivam Tested-by: Manivannan Sadhasivam Acked-By: Vinod Koul --- drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/dma/dw-edma/dw-edma-v0-debugfs.c b/drivers/dma/dw-edma/dw-edma-v0-debugfs.c index 5226c9014703..8e61810dea4b 100644 --- a/drivers/dma/dw-edma/dw-edma-v0-debugfs.c +++ b/drivers/dma/dw-edma/dw-edma-v0-debugfs.c @@ -14,7 +14,7 @@ #include "dw-edma-core.h" #define REGS_ADDR(name) \ - ((void __force *)®s->name) + ((void __iomem *)®s->name) #define REGISTER(name) \ { #name, REGS_ADDR(name) } @@ -48,12 +48,13 @@ static struct { struct debugfs_entries { const char *name; - dma_addr_t *reg; + void __iomem *reg; }; static int dw_edma_debugfs_u32_get(void *data, u64 *val) { - void __iomem *reg = (void __force __iomem *)data; + void __iomem *reg = data; + if (dw->chip->mf == EDMA_MF_EDMA_LEGACY && reg >= (void __iomem *)®s->type.legacy.ch) { void __iomem *ptr = ®s->type.legacy.ch;