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Wed, 17 Oct 2018 13:42:06 +0000 (GMT) X-AuditID: cbfec7f2-5c9ff70000001159-90-5bc73c2e1115 Received: from eusync4.samsung.com ( [203.254.199.214]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id 3D.12.04128.D2C37CB5; Wed, 17 Oct 2018 14:42:06 +0100 (BST) Received: from AMDC2765.digital.local ([106.116.147.25]) by eusync4.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTPA id <0PGQ001A0WQ1IZ80@eusync4.samsung.com>; Wed, 17 Oct 2018 14:42:05 +0100 (BST) From: Marek Szyprowski To: linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Marek Szyprowski , Will Deacon , Catalin Marinas , Marc Zyngier , Thomas Gleixner , Daniel Lezcano , Krzysztof Kozlowski , Chanwoo Choi , Bartlomiej Zolnierkiewicz , Inki Dae Subject: [PATCH v3 2/6] clocksource: exynos_mct: Fix error path in timer resources initialization Date: Wed, 17 Oct 2018 15:41:55 +0200 Message-id: <20181017134159.9656-3-m.szyprowski@samsung.com> X-Mailer: git-send-email 2.17.1 In-reply-to: <20181017134159.9656-1-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrAIsWRmVeSWpSXmKPExsWy7djP87p6NsejDV7fUrLYOGM9q8X7ZT2M Fte/PGe1mPdZ1mLS/QksFufPb2C32PT4GqvF5V1z2CxmnN/HZLH2yF12i793/rFZbN40ldni 5ccTLA68HmvmrWH02LSqk83jzrU9bB7vzp1j99i8pN6jb8sqRo/Pm+QC2KO4bFJSczLLUov0 7RK4Mn5uuMhe8JWr4u6JXUwNjHM5uxg5OSQETCTm3mtm7WLk4hASWMEocWXabSjnM6PE7afv mGGqHm86wQiRWMYo0dl1lwnCaWCSuLdwKStIFZuAoUTX2y42EFtEIFui8/EDRhCbWWARs8SB Y8IgtrBAskTH//9gU1kEVCX6Tj9iAbF5BWwk3k5azgSxTV5i9YYDQDUcHJwCthJr+6tAdkkI 7GGTuLZ+OjtEjYvEzB8nWCBsYYlXx7dAxWUkLk/uZoFoaGaUaJ8xix3C6WGU2DpnBxtElbXE 4eMXWSGu45OYtG062DYJAV6JjjYhiBIPiTlzm6G+nMAo8a5zJeMERskFjAyrGMVTS4tz01OL DfNSy/WKE3OLS/PS9ZLzczcxAuP59L/jn3Ywfr2UdIhRgINRiYd3h9ixaCHWxLLiytxDjBIc zEoivFWKx6OFeFMSK6tSi/Lji0pzUosPMUpzsCiJ8y6btzFaSCA9sSQ1OzW1ILUIJsvEwSnV wLhh36KXe/kZzc1POmzZLiX05rq86786/eOWb7Y3/p+88/Y3xnvpafVyv/fMF1jC+PzPoreq 11vWWN39O/OXnF9aT2qx+uOWqnMBzC3xG3q54tT3sBt/T5PavPGYDLfzSrEAlmmud0t2is3T /eSfYDJt0yfeUjGTq/XRql4ZcftmfWOeHRnxXFiJpTgj0VCLuag4EQBKz7I+4wIAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrDLMWRmVeSWpSXmKPExsVy+t/xa7p6NsejDU51MlpsnLGe1eL9sh5G i+tfnrNazPssazHp/gQWi/PnN7BbbHp8jdXi8q45bBYzzu9jslh75C67xd87/9gsNm+aymzx 8uMJFgdejzXz1jB6bFrVyeZx59oeNo93586xe2xeUu/Rt2UVo8fnTXIB7FFcNimpOZllqUX6 dglcGT83XGQv+MpVcffELqYGxrmcXYycHBICJhKPN51g7GLk4hASWMIosXv9TCiniUmis6uT DaSKTcBQouttF5gtIpAtMX9vNzuIzSywhFni5n0HEFtYIFmi4/9/ZhCbRUBVou/0IxYQm1fA RuLtpOVMENvkJVZvOABUw8HBKWArsba/CiQsBFTy8vNcpgmMPAsYGVYxiqSWFuem5xYb6RUn 5haX5qXrJefnbmIEhuG2Yz+37GDsehd8iFGAg1GJh3eH2LFoIdbEsuLK3EOMEhzMSiK8VYrH o4V4UxIrq1KL8uOLSnNSiw8xSnOwKInznjeojBISSE8sSc1OTS1ILYLJMnFwSjUwRu7svsDa 9/BUyfs402WVf3bb9wcxv1R+smcZv4a8i9/MS4JWE/Pfv33drz2jwe5VeI6UtbZ/6z7VhGgL ZmfPNxUdL8OSVk/Z98+x4Vl/UdEbcZuo5Z/WTM1+OvXEx74vB9bM2f7cvVdz7jkOtxtP4q+I 7Px7Tfruhw7uL60Kzvn1Z28wMkV9UGIpzkg01GIuKk4EADtcOmQ/AgAA X-CMS-MailID: 20181017134206eucas1p1caf7cdec20ec620a5bf52fb9e060a7de X-Msg-Generator: CA CMS-TYPE: 201P X-CMS-RootMailID: 20181017134206eucas1p1caf7cdec20ec620a5bf52fb9e060a7de References: <20181017134159.9656-1-m.szyprowski@samsung.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org While freeing interrupt handlers in error path, don't assume that all requested interrupts are per-processor interrupts and properly release standard interrupts too. Reported-by: Krzysztof Kozlowski Fixes: 56a94f13919c ("clocksource: exynos_mct: Avoid blocking calls in the cpu hotplug notifier") Signed-off-by: Marek Szyprowski Reviewed-by: Krzysztof Kozlowski Reviewed-by: Chanwoo Choi --- drivers/clocksource/exynos_mct.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) -- 2.17.1 diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c index ef18bbf8d20c..49413900b24c 100644 --- a/drivers/clocksource/exynos_mct.c +++ b/drivers/clocksource/exynos_mct.c @@ -561,7 +561,19 @@ static int __init exynos4_timer_resources(struct device_node *np, void __iomem * return 0; out_irq: - free_percpu_irq(mct_irqs[MCT_L0_IRQ], &percpu_mct_tick); + if (mct_int_type == MCT_INT_PPI) { + free_percpu_irq(mct_irqs[MCT_L0_IRQ], &percpu_mct_tick); + } else { + for_each_possible_cpu(cpu) { + struct mct_clock_event_device *pcpu_mevt = + per_cpu_ptr(&percpu_mct_tick, cpu); + + if (pcpu_mevt->evt.irq != -1) { + free_irq(pcpu_mevt->evt.irq, pcpu_mevt); + pcpu_mevt->evt.irq = -1; + } + } + } return err; }