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[2a02:8389:41cf:e200:55c0:165d:e76c:a019]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-37d4b7ee49bsm4581663f8f.100.2024.10.11.12.22.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Oct 2024 12:22:25 -0700 (PDT) From: Javier Carrasco Date: Fri, 11 Oct 2024 21:21:52 +0200 Subject: [PATCH 2/2] drm/mediatek: Switch to for_each_child_of_node_scoped() MIME-Version: 1.0 Message-Id: <20241011-mtk_drm_drv_memleak-v1-2-2b40c74c8d75@gmail.com> References: <20241011-mtk_drm_drv_memleak-v1-0-2b40c74c8d75@gmail.com> In-Reply-To: <20241011-mtk_drm_drv_memleak-v1-0-2b40c74c8d75@gmail.com> To: Chun-Kuang Hu , Philipp Zabel , David Airlie , Simona Vetter , Matthias Brugger , AngeloGioacchino Del Regno , Alexandre Mergnat , CK Hu , "Jason-JH.Lin" Cc: dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Javier Carrasco X-Mailer: b4 0.14-dev X-Developer-Signature: v=1; a=ed25519-sha256; t=1728674541; l=1436; i=javier.carrasco.cruz@gmail.com; s=20240312; h=from:subject:message-id; bh=NIQyalFfWvXbrf5QDhsF9KSVr5abtwUFulTgkzyXOgM=; b=rbU7FqAOUJAaaOiSLWdKxgwrbugJ/grvJuThgHTtqrrqNwfI9iTGPlHUx/XB89McOBEJe5dBu yJhiWoNOe+BBmCJt5qEWcN0JkOJoUYWYGOxcxUVTsX0PA3p8LqE99pX X-Developer-Key: i=javier.carrasco.cruz@gmail.com; a=ed25519; pk=lzSIvIzMz0JhJrzLXI0HAdPwsNPSSmEn6RbS+PTS9aQ= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241011_122227_376318_79D89AAA X-CRM114-Status: GOOD ( 12.74 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Introduce the scoped variant of the loop to automatically release the child node when it goes out of scope, which is more robust than the non-scoped variant, and accounts for new early exits that could be added in the future. Signed-off-by: Javier Carrasco Reviewed-by: CK Hu Reviewed-by: Chen-Yu Tsai Reviewed-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 0878df832859..9ab656b10a49 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -372,12 +372,11 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev) struct mtk_drm_private *temp_drm_priv; struct device_node *phandle = dev->parent->of_node; const struct of_device_id *of_id; - struct device_node *node; struct device *drm_dev; unsigned int cnt = 0; int i, j; - for_each_child_of_node(phandle->parent, node) { + for_each_child_of_node_scoped(phandle->parent, node) { struct platform_device *pdev; of_id = of_match_node(mtk_drm_of_ids, node); @@ -406,10 +405,8 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev) if (temp_drm_priv->mtk_drm_bound) cnt++; - if (cnt == MAX_CRTC) { - of_node_put(node); + if (cnt == MAX_CRTC) break; - } } if (drm_priv->data->mmsys_dev_num == cnt) {