From patchwork Fri Apr 7 06:46:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jason-JH.Lin" X-Patchwork-Id: 13204483 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 0FF03C76196 for ; Fri, 7 Apr 2023 06:47:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 44FD810ECD0; Fri, 7 Apr 2023 06:47:08 +0000 (UTC) Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by gabe.freedesktop.org (Postfix) with ESMTPS id 294A810E819 for ; Fri, 7 Apr 2023 06:47:05 +0000 (UTC) X-UUID: ff4d990ed50f11eda9a90f0bb45854f4-20230407 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=QZ37W9OSn/D1U5UFhTl3GS1/1Rs+rsZ86abCpxFX95M=; b=W+7sCR7RHN0QSPFoId1OKO77tdoJXMTW6PeAbDPbIP0ahCHVg8jBJyPfu7G7iRNht/aXVmztqnLecCGCQ+ePpeRwHxqNzL72puYnVXa0aa91tDa5row4coUBGKjXAv6g9W2H+Yb7hD/9E247r0tjFTuXnJCNOi6J65J22dOf0Os=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.22, REQID:30eb857e-54f0-4ca4-ac87-f9cd0e26bfb4, IP:0, U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:120426c, CLOUDID:b77b9c2a-564d-42d9-9875-7c868ee415ec, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-UUID: ff4d990ed50f11eda9a90f0bb45854f4-20230407 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1673628554; Fri, 07 Apr 2023 14:47:00 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Fri, 7 Apr 2023 14:46:59 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Fri, 7 Apr 2023 14:46:59 +0800 From: Jason-JH.Lin To: Chun-Kuang Hu , AngeloGioacchino Del Regno Subject: [PATCH 4/5] drm/mediatek: Add casting before assign Date: Fri, 7 Apr 2023 14:46:56 +0800 Message-ID: <20230407064657.12350-5-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230407064657.12350-1-jason-jh.lin@mediatek.com> References: <20230407064657.12350-1-jason-jh.lin@mediatek.com> MIME-Version: 1.0 X-MTK: N X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Jason-JH . Lin" , Singo Chang , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Project_Global_Chrome_Upstream_Group@mediatek.com, Rex-BC Chen , Jason-ch Chen , Nancy Lin , linux-mediatek@lists.infradead.org, Shawn Sung , Matthias Brugger , linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add casting before assign to avoid the unintentional integer overflow or unintended sign extension. Signed-off-by: Jason-JH.Lin Fixes: 1a64a7aff8da ("drm/mediatek: Fix cursor plane no update") --- drivers/gpu/drm/mediatek/mtk_drm_gem.c | 2 +- drivers/gpu/drm/mediatek/mtk_drm_plane.c | 20 +++++++++++--------- 2 files changed, 12 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.c b/drivers/gpu/drm/mediatek/mtk_drm_gem.c index 9b8f72ed12e4..537e83b95001 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_gem.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.c @@ -121,7 +121,7 @@ int mtk_drm_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev, int ret; args->pitch = DIV_ROUND_UP(args->width * args->bpp, 8); - args->size = args->pitch * args->height; + args->size = (unsigned long)args->pitch * args->height; mtk_gem = mtk_drm_gem_create(dev, args->size, false); if (IS_ERR(mtk_gem)) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c index 31f9420aff6f..a1337f386bbf 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c @@ -140,7 +140,7 @@ static void mtk_plane_update_new_state(struct drm_plane_state *new_state, struct drm_framebuffer *fb = new_state->fb; struct drm_gem_object *gem; struct mtk_drm_gem_obj *mtk_gem; - unsigned int pitch, format; + unsigned int pitch, format, cpp; u64 modifier; dma_addr_t addr; dma_addr_t hdr_addr = 0; @@ -151,11 +151,12 @@ static void mtk_plane_update_new_state(struct drm_plane_state *new_state, addr = mtk_gem->dma_addr; pitch = fb->pitches[0]; format = fb->format->format; + cpp = (unsigned int)fb->format->cpp[0]; modifier = fb->modifier; if (modifier == DRM_FORMAT_MOD_LINEAR) { - addr += (new_state->src.x1 >> 16) * fb->format->cpp[0]; - addr += (new_state->src.y1 >> 16) * pitch; + addr += (dma_addr_t)(new_state->src.x1 >> 16) * cpp; + addr += (dma_addr_t)(new_state->src.y1 >> 16) * pitch; } else { int width_in_blocks = ALIGN(fb->width, AFBC_DATA_BLOCK_WIDTH) / AFBC_DATA_BLOCK_WIDTH; @@ -167,17 +168,18 @@ static void mtk_plane_update_new_state(struct drm_plane_state *new_state, hdr_pitch = width_in_blocks * AFBC_HEADER_BLOCK_SIZE; pitch = width_in_blocks * AFBC_DATA_BLOCK_WIDTH * - AFBC_DATA_BLOCK_HEIGHT * fb->format->cpp[0]; + AFBC_DATA_BLOCK_HEIGHT * cpp; hdr_size = ALIGN(hdr_pitch * height_in_blocks, AFBC_HEADER_ALIGNMENT); - hdr_addr = addr + hdr_pitch * y_offset_in_blocks + - AFBC_HEADER_BLOCK_SIZE * x_offset_in_blocks; + hdr_addr = addr + + (dma_addr_t)hdr_pitch * y_offset_in_blocks + + (dma_addr_t)AFBC_HEADER_BLOCK_SIZE * x_offset_in_blocks; /* The data plane is offset by 1 additional block. */ addr = addr + hdr_size + - pitch * y_offset_in_blocks + - AFBC_DATA_BLOCK_WIDTH * AFBC_DATA_BLOCK_HEIGHT * - fb->format->cpp[0] * (x_offset_in_blocks + 1); + (dma_addr_t)pitch * y_offset_in_blocks + + (dma_addr_t)AFBC_DATA_BLOCK_WIDTH * AFBC_DATA_BLOCK_HEIGHT * + (dma_addr_t)cpp * (x_offset_in_blocks + 1); } mtk_plane_state->pending.enable = true;