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Message-Id: <1445697755-26341-9-git-send-email-Julia.Lawall@lip6.fr> Date: Sat, 24 Oct 2015 16:42:34 +0200 From: Julia Lawall <Julia.Lawall@...6.fr> To: Santosh Shilimkar <ssantosh@...nel.org> Cc: kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, Russell King - ARM Linux <linux@....linux.org.uk>, Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>, Andrew Lunn <andrew@...n.ch>, Bjorn Helgaas <bhelgaas@...gle.com>, Jason Cooper <jason@...edaemon.net> Subject: [PATCH 8/9] soc: ti: knav_qmss_queue: add missing of_node_put for_each_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ expression root,e; local idexpression child; @@ for_each_child_of_node(root, child) { ... when != of_node_put(child) when != e = child ( return child; | + of_node_put(child); ? return ...; ) ... } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr> --- drivers/soc/ti/knav_qmss_queue.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/soc/ti/knav_qmss_queue.c b/drivers/soc/ti/knav_qmss_queue.c index 89789e2..6f3d12b 100644 --- a/drivers/soc/ti/knav_qmss_queue.c +++ b/drivers/soc/ti/knav_qmss_queue.c @@ -1074,6 +1074,7 @@ static int knav_queue_setup_regions(struct knav_device *kdev, region = devm_kzalloc(dev, sizeof(*region), GFP_KERNEL); if (!region) { dev_err(dev, "out of memory allocating region\n"); + of_node_put(child); return -ENOMEM; } @@ -1373,6 +1374,7 @@ static int knav_queue_init_qmgrs(struct knav_device *kdev, qmgr = devm_kzalloc(dev, sizeof(*qmgr), GFP_KERNEL); if (!qmgr) { dev_err(dev, "out of memory allocating qmgr\n"); + of_node_put(child); return -ENOMEM; } @@ -1450,6 +1452,7 @@ static int knav_queue_init_pdsps(struct knav_device *kdev, pdsp = devm_kzalloc(dev, sizeof(*pdsp), GFP_KERNEL); if (!pdsp) { dev_err(dev, "out of memory allocating pdsp\n"); + of_node_put(child); return -ENOMEM; } pdsp->name = knav_queue_find_name(child); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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