Some chips (like the SoCs from Freescale) report the wrong value in NIRQ
and this causes issues if its doesn't match or exceed the value of
irq_count.
Add a flag that board code can set to just use irq_count instead of
FRR[NIRQ]. Eventually we'll add a device tree property with the number
of sources.
Signed-off-by: Kumar Gala <[EMAIL PROTECTED]>
---
arch/powerpc/sysdev/mpic.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 8619f2a..4530b38 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -1144,9 +1144,9 @@ struct mpic * __init mpic_alloc(struct device_node *node,
mpic->num_cpus = ((greg_feature & MPIC_GREG_FEATURE_LAST_CPU_MASK)
>> MPIC_GREG_FEATURE_LAST_CPU_SHIFT) + 1;
if (isu_size == 0)
- mpic->num_sources =
+ mpic->num_sources = max(mpic->irq_count,
((greg_feature & MPIC_GREG_FEATURE_LAST_SRC_MASK)
- >> MPIC_GREG_FEATURE_LAST_SRC_SHIFT) + 1;
+ >> MPIC_GREG_FEATURE_LAST_SRC_SHIFT) + 1);
/* Map the per-CPU registers */
for (i = 0; i < mpic->num_cpus; i++) {
--
1.5.4.5
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