From patchwork Tue Dec 15 03:04:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11973637 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 EACBFC4361B for ; Tue, 15 Dec 2020 03:04:20 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 85E8F223E4 for ; Tue, 15 Dec 2020 03:04:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 85E8F223E4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 1CA306B0085; Mon, 14 Dec 2020 22:04:20 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 153C86B0087; Mon, 14 Dec 2020 22:04:20 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 08FB06B0088; Mon, 14 Dec 2020 22:04:20 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0215.hostedemail.com [216.40.44.215]) by kanga.kvack.org (Postfix) with ESMTP id E69D36B0085 for ; Mon, 14 Dec 2020 22:04:19 -0500 (EST) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id B830F1EF3 for ; Tue, 15 Dec 2020 03:04:19 +0000 (UTC) X-FDA: 77594023038.01.death76_49038e427420 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id 9A80510048E2A for ; Tue, 15 Dec 2020 03:04:19 +0000 (UTC) X-HE-Tag: death76_49038e427420 X-Filterd-Recvd-Size: 3813 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf50.hostedemail.com (Postfix) with ESMTP for ; Tue, 15 Dec 2020 03:04:19 +0000 (UTC) Date: Mon, 14 Dec 2020 19:04:16 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1608001458; bh=p5C0kYaerSwoDqufo2uL+XPn1vNE05k4QOtvrFN80es=; h=From:To:Subject:In-Reply-To:From; b=nYMK7bv1nAKC0flGdRlrMlddJt+9bzjdpwHszk1OBRF8fy2079pCePEysHZo0xe8/ kYeqXEt3nX5uOT91S5Flz1L0Qk0EdIMwHdUZRzvHFlJhbomVQiCI9+eebls1xN1JQ4 lQGQvJvHagJpvvj7JWEdutDGKUCCVs4RA6Vb8cGc= From: Andrew Morton To: airlied@linux.ie, akpm@linux-foundation.org, alexander.shishkin@linux.intel.com, andriy.shevchenko@linux.intel.com, bgolaszewski@baylibre.com, bp@alien8.de, bp@suse.de, christian.koenig@amd.com, cl@linux.com, daniel.vetter@ffwll.ch, daniel@ffwll.ch, gustavo@padovan.org, iamjoonsoo.kim@lge.com, james.morse@arm.com, jasowang@redhat.com, linus.walleij@linaro.org, linux-mm@kvack.org, maarten.lankhorst@linux.intel.com, mchehab@kernel.org, mm-commits@vger.kernel.org, mripard@kernel.org, mst@redhat.com, penberg@kernel.org, perex@perex.cz, rientjes@google.com, rric@kernel.org, sumit.semwal@linaro.org, tiwai@suse.com, tiwai@suse.de, tony.luck@intel.com, torvalds@linux-foundation.org, tzimmermann@suse.de, vbabka@suse.cz Subject: [patch 018/200] drm: atomic: use krealloc_array() Message-ID: <20201215030416.CBqWTf4L1%akpm@linux-foundation.org> In-Reply-To: <20201214190237.a17b70ae14f129e2dca3d204@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Bartosz Golaszewski Subject: drm: atomic: use krealloc_array() Use the helper that checks for overflows internally instead of manually calculating the size of the new array. Link: https://lkml.kernel.org/r/20201109110654.12547-8-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski Acked-by: Daniel Vetter Cc: Alexander Shishkin Cc: Andy Shevchenko Cc: Borislav Petkov Cc: Borislav Petkov Cc: Christian Knig Cc: Christoph Lameter Cc: Daniel Vetter Cc: David Airlie Cc: David Rientjes Cc: Gustavo Padovan Cc: James Morse Cc: Jaroslav Kysela Cc: Jason Wang Cc: Joonsoo Kim Cc: Linus Walleij Cc: Maarten Lankhorst Cc: Mauro Carvalho Chehab Cc: Maxime Ripard Cc: "Michael S . Tsirkin" Cc: Pekka Enberg Cc: Robert Richter Cc: Sumit Semwal Cc: Takashi Iwai Cc: Takashi Iwai Cc: Thomas Zimmermann Cc: Tony Luck Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- drivers/gpu/drm/drm_atomic.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/drm_atomic.c~drm-atomic-use-krealloc_array +++ a/drivers/gpu/drm/drm_atomic.c @@ -960,7 +960,8 @@ drm_atomic_get_connector_state(struct dr struct __drm_connnectors_state *c; int alloc = max(index + 1, config->num_connector); - c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); + c = krealloc_array(state->connectors, alloc, + sizeof(*state->connectors), GFP_KERNEL); if (!c) return ERR_PTR(-ENOMEM);