From: Krzysztof Kozlowski <k.kozlowski.k@gmail.com> To: Kukjin Kim <kgene@kernel.org>, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Subject: [RESEND PATCH v2 1/3] ARM: EXYNOS: Handle of of_iomap() failure Date: Wed, 22 Apr 2015 22:17:08 +0900 [thread overview] Message-ID: <1429708630-19810-1-git-send-email-k.kozlowski.k@gmail.com> (raw) From: Krzysztof Kozlowski <k.kozlowski@samsung.com> Prevent possible NULL pointer dereference if of_iomap() fails. Handle the error by skipping such power domain. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> --- Changes since v1: 1. Add missing kfree() of domain name (allocated with kstrdup()). --- arch/arm/mach-exynos/pm_domains.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c index cbe56b35aea0..14622b5f4481 100644 --- a/arch/arm/mach-exynos/pm_domains.c +++ b/arch/arm/mach-exynos/pm_domains.c @@ -138,6 +138,14 @@ static __init int exynos4_pm_init_power_domain(void) pd->pd.name = kstrdup(dev_name(dev), GFP_KERNEL); pd->name = pd->pd.name; pd->base = of_iomap(np, 0); + if (!pd->base) { + dev_warn(&pdev->dev, "Failed to map memory\n"); + kfree(pd->pd.name); + kfree(pd); + of_node_put(np); + continue; + } + pd->pd.power_off = exynos_pd_power_off; pd->pd.power_on = exynos_pd_power_on; -- 2.1.0
WARNING: multiple messages have this Message-ID (diff)
From: k.kozlowski.k@gmail.com (Krzysztof Kozlowski) To: linux-arm-kernel@lists.infradead.org Subject: [RESEND PATCH v2 1/3] ARM: EXYNOS: Handle of of_iomap() failure Date: Wed, 22 Apr 2015 22:17:08 +0900 [thread overview] Message-ID: <1429708630-19810-1-git-send-email-k.kozlowski.k@gmail.com> (raw) From: Krzysztof Kozlowski <k.kozlowski@samsung.com> Prevent possible NULL pointer dereference if of_iomap() fails. Handle the error by skipping such power domain. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> --- Changes since v1: 1. Add missing kfree() of domain name (allocated with kstrdup()). --- arch/arm/mach-exynos/pm_domains.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c index cbe56b35aea0..14622b5f4481 100644 --- a/arch/arm/mach-exynos/pm_domains.c +++ b/arch/arm/mach-exynos/pm_domains.c @@ -138,6 +138,14 @@ static __init int exynos4_pm_init_power_domain(void) pd->pd.name = kstrdup(dev_name(dev), GFP_KERNEL); pd->name = pd->pd.name; pd->base = of_iomap(np, 0); + if (!pd->base) { + dev_warn(&pdev->dev, "Failed to map memory\n"); + kfree(pd->pd.name); + kfree(pd); + of_node_put(np); + continue; + } + pd->pd.power_off = exynos_pd_power_off; pd->pd.power_on = exynos_pd_power_on; -- 2.1.0
next reply other threads:[~2015-04-22 13:17 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-04-22 13:17 Krzysztof Kozlowski [this message] 2015-04-22 13:17 ` [RESEND PATCH v2 1/3] ARM: EXYNOS: Handle of of_iomap() failure Krzysztof Kozlowski 2015-04-22 13:17 ` [RESEND PATCH v2 2/3] ARM: EXYNOS: Handle of_find_device_by_node and kstrdup failures Krzysztof Kozlowski 2015-04-22 13:17 ` Krzysztof Kozlowski 2015-04-22 13:17 ` [RESEND PATCH v2 3/3] ARM: EXYNOS: Add missing of_node_put() when parsing power domains Krzysztof Kozlowski 2015-04-22 13:17 ` Krzysztof Kozlowski
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