linux-kernel - [PATCH 3/3] ARM: EXYNOS: delete unneeded of_node

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Message-Id: <1444682596-3065-4-git-send-email-Julia.Lawall@lip6.fr>
Date:	Mon, 12 Oct 2015 22:43:16 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Russell King <linux@....linux.org.uk>
Cc:	kernel-janitors@...r.kernel.org, Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Andrew Lunn <andrew@...n.ch>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Jason Cooper <jason@...edaemon.net>
Subject: [PATCH 3/3] ARM: EXYNOS: delete unneeded of_node_put

Device node iterators perform an of_node_put on each iteration, so putting
an of_node_put before going around to the next iteration results in a
double put.

Problem found using Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 arch/arm/mach-exynos/pm_domains.c |    8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c
index 4a87e86..7c21760 100644
--- a/arch/arm/mach-exynos/pm_domains.c
+++ b/arch/arm/mach-exynos/pm_domains.c
@@ -200,15 +200,15 @@ no_clk:
 		args.args_count = 0;
 		child_domain = of_genpd_get_from_provider(&args);
 		if (IS_ERR(child_domain))
-			goto next_pd;
+			continue;
 
 		if (of_parse_phandle_with_args(np, "power-domains",
 					 "#power-domain-cells", 0, &args) != 0)
-			goto next_pd;
+			continue;
 
 		parent_domain = of_genpd_get_from_provider(&args);
 		if (IS_ERR(parent_domain))
-			goto next_pd;
+			continue;
 
 		if (pm_genpd_add_subdomain(parent_domain, child_domain))
 			pr_warn("%s failed to add subdomain: %s\n",
@@ -216,8 +216,6 @@ no_clk:
 		else
 			pr_info("%s has as child subdomain: %s.\n",
 				parent_domain->name, child_domain->name);
-next_pd:
-		of_node_put(np);
 	}
 
 	return 0;

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