From mboxrd@z Thu Jan 1 00:00:00 1970 From: sboyd@codeaurora.org (Stephen Boyd) Date: Wed, 11 Mar 2015 23:21:31 -0700 Subject: [PATCH/RESEND] irqchip: gic: Don't complain in gic_get_cpumask() if UP system Message-ID: <1426141291-21641-1-git-send-email-sboyd@codeaurora.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Acked-by: Felipe Balbi Acked-by: Nishanth Menon Acked-by: Stefan Agner Cc: Russell King Signed-off-by: Stephen Boyd --- 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