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| author | Stephen Boyd <sboyd@codeaurora.org> | 2015-03-12 07:21:31 +0100 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2015-03-15 02:37:14 +0100 |
| commit | 6e3aca4419e1363ff9abb3e1710c52858fc45b66 (patch) | |
| tree | 379c2066639bd978b8c0ce22df64aed2da4d472f /drivers/irqchip | |
| parent | Merge branch 'irqchip/st' into irqchip/core (diff) | |
| download | linux-6e3aca4419e1363ff9abb3e1710c52858fc45b66.tar.xz linux-6e3aca4419e1363ff9abb3e1710c52858fc45b66.zip | |
irqchip: gic: Don't complain in gic_get_cpumask() if UP system
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 <nico@linaro.org>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
Acked-by: Stefan Agner <stefan@agner.ch>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Link: https://lkml.kernel.org/r/1426141291-21641-1-git-send-email-sboyd@codeaurora.org
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; |