Arnd Bergmann wrote:
>
> Patch 01f8fa4f01d "genirq: Allow forcing cpu affinity of interrupts" added
> an irq_force_affinity() function, and 30ccf03b4a6 "clocksource:
Exynos_mct:
> Use irq_force_affinity() in cpu bringup" subsequently uses it. However,
> the
> driver can be used with CONFIG_SMP disabled, but the function declaration
> is only available for CONFIG_SMP, leading to this build error:
>
> drivers/clocksource/exynos_mct.c:431:3: error: implicit declaration of
> function 'irq_force_affinity' [-Werror=implicit-function-declaration]
> irq_force_affinity(mct_irqs[MCT_L0_IRQ + cpu], cpumask_of(cpu));
>
> This patch introduces a dummy helper function for the non-SMP case
> that always returns success, to get rid of the build error.
> Since the patches causing the problem are marked for stable backports,
> this one should be as well.
>
> Signed-off-by: Arnd Bergmann <a...@arndb.de>
Arnd, thanks for your fix the build error.
Acked-by: Kukjin Kim <kgene....@samsung.com>
- Kukjin
> Cc: sta...@vger.kernel.org
> ---
> diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
> index 0e6b23f..b72a643 100644
> --- a/include/linux/interrupt.h
> +++ b/include/linux/interrupt.h
> @@ -272,6 +272,11 @@ static inline int irq_set_affinity(unsigned int irq,
> const struct cpumask *m)
> return -EINVAL;
> }
>
> +static inline int irq_force_affinity(unsigned int irq, const struct
> cpumask *cpumask)
> +{
> + return 0;
> +}
> +
> static inline int irq_can_set_affinity(unsigned int irq)
> {
> return 0;
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
