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Date: Fri, 6 Nov 2015 11:19:00 -0800 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Krzysztof Kozlowski <k.kozlowski@...sung.com>, Kukjin Kim <kgene@...nel.org> Subject: [PATCH 4.2 053/110] ARM: EXYNOS: Fix double of_node_put() when parsing child power domains 4.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Krzysztof Kozlowski <k.kozlowski@...sung.com> commit 51a6256b00008a3c520f6f31bcd62cd15cb05960 upstream. On each next iteration of for_each_compatible_node() the reference counter for current device node is already decreased by the loop iterator. The manual call to of_node_get() is required only on loop break which is not happening here. The double of_node_get() (with enabled CONFIG_OF_DYNAMIC) lead to decreasing the counter below expected, initial value. Fixes: fe4034a3fad7 ("ARM: EXYNOS: Add missing of_node_put() when parsing power domains") Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com> Signed-off-by: Kukjin Kim <kgene@...nel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- arch/arm/mach-exynos/pm_domains.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) --- 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; -- 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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