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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, 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 60EFEC43381 for ; Wed, 27 Mar 2019 18:39:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 284E521734 for ; Wed, 27 Mar 2019 18:39:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553711996; bh=9+VbxPXqyVaC6ds4kj39egbF6cyIe1wtvhs2xjsi1Eo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=VAIeORX6jktbcD8iYnuSDAMYLie3pAXv3tXJy3J7HTEKhAzDCqeCFDB7JL6DaN+Fp JQvi+380zPyu33azVvatDSegNHr4GewK79Wyl3VYkifQNgoY7EzgZWyXXu9WO5vRDw ljOECA1Pko13n+tE8uE5K8Bs8AJ1uM001XH5N2/8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391538AbfC0Sjz (ORCPT ); Wed, 27 Mar 2019 14:39:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:41244 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391384AbfC0SXB (ORCPT ); Wed, 27 Mar 2019 14:23:01 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D782620449; Wed, 27 Mar 2019 18:22:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553710980; bh=9+VbxPXqyVaC6ds4kj39egbF6cyIe1wtvhs2xjsi1Eo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QAineV4R2Wufaktbx5HE89IwBSjBzFn9eAgcoN5GJzm6vmwE3r88h/YPsyNveSL3I esY+Z28b8FNtwE4mZ7JQs2BLiVKXhImUvTrbP2G3WaN1QTWVMxO/cxl5CsiBOuhBJS 9Oqbjc296d9ltftam4xe4zyEMwaGPVeDlS+gAnfc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anders Roxell , Vinod Koul , Sasha Levin , dmaengine@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 75/87] dmaengine: imx-dma: fix warning comparison of distinct pointer types Date: Wed, 27 Mar 2019 14:20:28 -0400 Message-Id: <20190327182040.17444-75-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190327182040.17444-1-sashal@kernel.org> References: <20190327182040.17444-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Anders Roxell [ Upstream commit 9227ab5643cb8350449502dd9e3168a873ab0e3b ] The warning got introduced by commit 930507c18304 ("arm64: add basic Kconfig symbols for i.MX8"). Since it got enabled for arm64. The warning haven't been seen before since size_t was 'unsigned int' when built on arm32. ../drivers/dma/imx-dma.c: In function ‘imxdma_sg_next’: ../include/linux/kernel.h:846:29: warning: comparison of distinct pointer types lacks a cast (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) ^~ ../include/linux/kernel.h:860:4: note: in expansion of macro ‘__typecheck’ (__typecheck(x, y) && __no_side_effects(x, y)) ^~~~~~~~~~~ ../include/linux/kernel.h:870:24: note: in expansion of macro ‘__safe_cmp’ __builtin_choose_expr(__safe_cmp(x, y), \ ^~~~~~~~~~ ../include/linux/kernel.h:879:19: note: in expansion of macro ‘__careful_cmp’ #define min(x, y) __careful_cmp(x, y, <) ^~~~~~~~~~~~~ ../drivers/dma/imx-dma.c:288:8: note: in expansion of macro ‘min’ now = min(d->len, sg_dma_len(sg)); ^~~ Rework so that we use min_t and pass in the size_t that returns the minimum of two values, using the specified type. Signed-off-by: Anders Roxell Acked-by: Olof Johansson Reviewed-by: Fabio Estevam Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/imx-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index 1cfa1d9bc971..f8786f60cdc1 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -290,7 +290,7 @@ static inline int imxdma_sg_next(struct imxdma_desc *d) struct scatterlist *sg = d->sg; unsigned long now; - now = min(d->len, sg_dma_len(sg)); + now = min_t(size_t, d->len, sg_dma_len(sg)); if (d->len != IMX_DMA_LENGTH_LOOP) d->len -= now; -- 2.19.1