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. Acked-by: Nicolas Pitre <[email protected]> Acked-by: Felipe Balbi <[email protected]> Acked-by: Nishanth Menon <[email protected]> Acked-by: Stefan Agner <[email protected]> Cc: Russell King <[email protected]> Signed-off-by: Stephen Boyd <[email protected]> --- Picked up acks from the list 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 4634cf7d0ec3..50e70a8c7ec4 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -349,7 +349,7 @@ 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; -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
