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Message-id: <20181017134159.9656-3-m.szyprowski@samsung.com>
Date: Wed, 17 Oct 2018 15:41:55 +0200
From: Marek Szyprowski <m.szyprowski@...sung.com>
To: linux-samsung-soc@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: Marek Szyprowski <m.szyprowski@...sung.com>,
Will Deacon <will.deacon@....com>,
Catalin Marinas <catalin.marinas@....com>,
Marc Zyngier <marc.zyngier@....com>,
Thomas Gleixner <tglx@...utronix.de>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Krzysztof Kozlowski <krzk@...nel.org>,
Chanwoo Choi <cw00.choi@...sung.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
Inki Dae <inki.dae@...sung.com>
Subject: [PATCH v3 2/6] clocksource: exynos_mct: Fix error path in timer
resources initialization
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 <krzk@...nel.org>
Fixes: 56a94f13919c ("clocksource: exynos_mct: Avoid blocking calls in the cpu hotplug notifier")
Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>
Reviewed-by: Chanwoo Choi <cw00.choi@...sung.com>
---
drivers/clocksource/exynos_mct.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
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;
}
--
2.17.1
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