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 17A4617CA12; Mon, 10 Mar 2025 17:51:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741629092; cv=none; b=rRz6z2pacaArbeBKp2ZMHY3pXdbrxaYGTc24RTl715TUEJBJOuibx0KKayKZ5IPbeFN5UtQ7qQPfU0IxhqUsubl1M+hOENSX31YJmGR7aUPw6gR1D8i7Zxh7SQxr3S3JlfoqFNmG4LRnV19k+hnXfVreq08O+QEUKkos1oORO/c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741629092; c=relaxed/simple; bh=XSGDD9lmOq5dZIr2zye4Xs7kKOIA6b6erHy+IcHKa/M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=a6xtLokvGmll5WHQiBreOr+6vANpj+BUxKjsxdfA0tToJdu4FN1Iho3pQUPAvJfNJGf1m7kUNRP7OvTDs2Cy0GsQ0R/Dt2vR67ugrpJv+G5mWdRXzlrucgc5rMW1gUOHEmpa/Hkh3c/13mr27EpYuJaHJP1QUNZRQL0rYL/B0co= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=h74lW2Od; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="h74lW2Od" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90A58C4CEE5; Mon, 10 Mar 2025 17:51:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1741629092; bh=XSGDD9lmOq5dZIr2zye4Xs7kKOIA6b6erHy+IcHKa/M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=h74lW2OdM2G5gTzCaiWzy+NGVdiHBd2mgxqwlax4CSbJqO21xmEYnXI7YRJCO/h1n eoaayrVjnX3iUdkreslal9OUooM++67h0DfCRYwClIzBWY88IdC9OHzCLhtuNJV0xP axLyVTXd9sjSybEOsdh0VHPUUm77sL5SAXHGR5Mc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Joe Hattori , Miquel Raynal , Sasha Levin Subject: [PATCH 5.15 147/620] mtd: hyperbus: hbmc-am654: fix an OF node reference leak Date: Mon, 10 Mar 2025 17:59:53 +0100 Message-ID: <20250310170551.407716992@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250310170545.553361750@linuxfoundation.org> References: <20250310170545.553361750@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Joe Hattori [ Upstream commit bf5821909eb9c7f5d07d5c6e852ead2c373c94a0 ] In am654_hbmc_platform_driver, .remove() and the error path of .probe() do not decrement the refcount of an OF node obtained by of_get_next_child(). Fix this by adding of_node_put() calls. Fixes: aca31ce96814 ("mtd: hyperbus: hbmc-am654: Fix direct mapping setup flash access") Signed-off-by: Joe Hattori Signed-off-by: Miquel Raynal Signed-off-by: Sasha Levin --- drivers/mtd/hyperbus/hbmc-am654.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/mtd/hyperbus/hbmc-am654.c b/drivers/mtd/hyperbus/hbmc-am654.c index dbe3eb361cca2..4b6cbee23fe89 100644 --- a/drivers/mtd/hyperbus/hbmc-am654.c +++ b/drivers/mtd/hyperbus/hbmc-am654.c @@ -174,26 +174,30 @@ static int am654_hbmc_probe(struct platform_device *pdev) priv->hbdev.np = of_get_next_child(np, NULL); ret = of_address_to_resource(priv->hbdev.np, 0, &res); if (ret) - return ret; + goto put_node; if (of_property_read_bool(dev->of_node, "mux-controls")) { struct mux_control *control = devm_mux_control_get(dev, NULL); - if (IS_ERR(control)) - return PTR_ERR(control); + if (IS_ERR(control)) { + ret = PTR_ERR(control); + goto put_node; + } ret = mux_control_select(control, 1); if (ret) { dev_err(dev, "Failed to select HBMC mux\n"); - return ret; + goto put_node; } priv->mux_ctrl = control; } priv->hbdev.map.size = resource_size(&res); priv->hbdev.map.virt = devm_ioremap_resource(dev, &res); - if (IS_ERR(priv->hbdev.map.virt)) - return PTR_ERR(priv->hbdev.map.virt); + if (IS_ERR(priv->hbdev.map.virt)) { + ret = PTR_ERR(priv->hbdev.map.virt); + goto disable_mux; + } priv->ctlr.dev = dev; priv->ctlr.ops = &am654_hbmc_ops; @@ -226,6 +230,8 @@ static int am654_hbmc_probe(struct platform_device *pdev) disable_mux: if (priv->mux_ctrl) mux_control_deselect(priv->mux_ctrl); +put_node: + of_node_put(priv->hbdev.np); return ret; } @@ -241,6 +247,7 @@ static void am654_hbmc_remove(struct platform_device *pdev) if (dev_priv->rx_chan) dma_release_channel(dev_priv->rx_chan); + of_node_put(priv->hbdev.np); } static const struct of_device_id am654_hbmc_dt_ids[] = { -- 2.39.5