On 2015-01-31 01:43, Stephen Boyd wrote:
> In a uniprocessor implementation the interrupt processor targets
> registers are read-as-zero/write-ignored (RAZ/WI). Unfortunately
> gic_get_cpumask() will print a critical message saying
>
> GIC CPU mask not found - kernel will fail to boot.
>
> if these registers all read as zero, but there won't actually be
> a problem on uniprocessor systems and the kernel will boot just
> fine. Skip this check if we're running a UP kernel or if we
> detect that the hardware only supports a single processor.
Does the job for my device too, thx.
Acked-by: Stefan Agner <ste...@agner.ch>
>
> Acked-by: Nicolas Pitre <n...@linaro.org>
> Cc: Russell King <rmk+ker...@arm.linux.org.uk>
> Cc: Stefan Agner <ste...@agner.ch>
> Signed-off-by: Stephen Boyd <sb...@codeaurora.org>
> ---
> drivers/irqchip/irq-gic.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
> index d617ee5a3d8a..1b70e0de0f6e 100644
> --- a/drivers/irqchip/irq-gic.c
> +++ b/drivers/irqchip/irq-gic.c
> @@ -346,7 +346,7 @@ static u8 gic_get_cpumask(struct gic_chip_data *gic)
> break;
> }
>
> - if (!mask)
> + if (!mask && num_possible_cpus() > 1)
> pr_crit("GIC CPU mask not found - kernel will fail to boot.\n");
>
> return mask;
--
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