Messages in this thread | | | Date | Thu, 25 Sep 2014 18:56:12 -0300 | From | Ezequiel Garcia <> | Subject | Re: [PATCH 0/2] Marvell Armada 375/38x MPIC/MSI fixes |
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Jason,
On 25 Sep 01:17 PM, Grzegorz Jaszczyk wrote: > This patchset contains a set of fixes for issues found while doing some test > with different interrupts configuration on Armada 375 and Armada 38x Marvell > SoCs. The patches were tested and apply on v3.17-rc6. > > Any feedback is welcome. > > Grzegorz Jaszczyk (2): > irqchip: armada-370-xp: fix MSI interrupt handling > irqchip: armada-370-xp: fix MPIC interrupt handling
The second patch fixes an unhandled IRQ storm triggered by the mvpp2 ethernet driver, when the kernel is built with CONFIG_SMP=n.
When any network activity is attempted the kernel is interrupted by a per-cpu IRQ (which is not the one the driver expects). The interrupt is not mapped into Linux's virtual IRQ space, so the result is:
irq 0, desc: ee004000, depth: 1, count: 0, unhandled: 0 ->handle_irq(): c00466e8, handle_bad_irq+0x0/0x260 ->irq_data.chip(): c1181460, 0xc1181460 ->action(): (null) IRQ_NOPROBE set IRQ_NOREQUEST set
For both patches:
Fixes: bc69b8adfe22 ("irqchip: armada-370-xp: Setup a chained handler for the MPIC") Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Thanks, -- Ezequiel García, Free Electrons Embedded Linux, Kernel and Android Engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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