Re: [PATCH 1/1] irqchip/mips-gic: Fix local interrupts
From: Marc Zyngier
Date: Wed Feb 08 2017 - 09:17:31 EST
On Wed, Jan 25 2017 at 2:08:25 pm GMT, Marcin Nowakowski <marcin.nowakowski@xxxxxxxxxx> wrote:
> Some local interrupts are not initialised properly at the moment and
> cannot be used since the domain's alloc method is never called for them.
> This has been observed earlier and partially fixed in commit
> e875bd66dfb ("irqchip/mips-gic: Fix local interrupts"), but that change
> still relied on the interrupt to be requested by an external driver (eg.
> This does however not solve the issue for interrupts that are not
> referenced by any driver through the device tree and results in
> request_irq() calls returning -ENOSYS. It can be observed when attempting
> to use perf tool to access hardware performance counters.
> Fix this by explicitly calling irq_create_fwspec_mapping() for local
> Fixes: e875bd66dfb ("irqchip/mips-gic: Fix local interrupts")
> Signed-off-by: Marcin Nowakowski <marcin.nowakowski@xxxxxxxxxx>
> Cc: Paul Burton <paul.burton@xxxxxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
> Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
> Cc: linux-mips@xxxxxxxxxxxxxx
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