From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5EE981C08 for ; Wed, 28 Dec 2022 16:37:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ABCF3C433D2; Wed, 28 Dec 2022 16:37:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672245442; bh=8PYbaGHGn2BoTknj0lteJ96f0x3lbuqYfESKBT6W+U4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Y8XFdvNO8LMQkxPEC5Sz8BKkUoaSnDhJ8PVKZ6M4ZVKSWW3Zjwvy8/od4vQokqKVN HboV37eILs4hsYnB7S0mnZriThbz6QeZyi+CogiPVgPxz8027D+N7T0baIVwcGRhG1 ieVV3odhhNI/QtSjN6Bpoo/B/UEzuePOce72FUrI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Robin Murphy , Yong Wu , AngeloGioacchino Del Regno , Matthias Brugger , Joerg Roedel , Sasha Levin Subject: [PATCH 6.1 0862/1146] iommu/mediatek: Use component_match_add Date: Wed, 28 Dec 2022 15:40:01 +0100 Message-Id: <20221228144353.571871543@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221228144330.180012208@linuxfoundation.org> References: <20221228144330.180012208@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Yong Wu [ Upstream commit b5765a1b44bea9dfcae69c53ffeb4c689d0922a7 ] In order to simplify the error patch(avoid call of_node_put), Use component_match_add instead component_match_add_release since we are only interested in the "device" here. Then we could always call of_node_put in normal path. Strictly this is not a fixes patch, but it is a prepare for adding the error path, thus I add a Fixes tag too. Fixes: d2e9a1102cfc ("iommu/mediatek: Contain MM IOMMU flow with the MM TYPE") Suggested-by: Robin Murphy Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Matthias Brugger Link: https://lore.kernel.org/r/20221018024258.19073-3-yong.wu@mediatek.com Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/mtk_iommu.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index febcca8fcbcf..ba5abfc2890c 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -1069,19 +1069,17 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **m id = i; plarbdev = of_find_device_by_node(larbnode); - if (!plarbdev) { - of_node_put(larbnode); + of_node_put(larbnode); + if (!plarbdev) return -ENODEV; - } + if (!plarbdev->dev.driver) { - of_node_put(larbnode); platform_device_put(plarbdev); return -EPROBE_DEFER; } data->larb_imu[id].dev = &plarbdev->dev; - component_match_add_release(dev, match, component_release_of, - component_compare_of, larbnode); + component_match_add(dev, match, component_compare_dev, &plarbdev->dev); platform_device_put(plarbdev); } -- 2.35.1