diff options
| author | Stephen Boyd <[email protected]> | 2015-03-11 23:21:31 -0700 |
|---|---|---|
| committer | Jason Cooper <[email protected]> | 2015-03-15 01:37:14 +0000 |
| commit | 6e3aca4419e1363ff9abb3e1710c52858fc45b66 (patch) | |
| tree | 379c2066639bd978b8c0ce22df64aed2da4d472f | |
| parent | c9558659e68ee30740f265c54f792bf75add21f2 (diff) | |
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 <[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]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Jason Cooper <[email protected]>
| -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; |