[PATCH] [POWERPC] mpic: deal with bogus NIRQ in Feature Reporting Register
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STALE6732d
From: Kumar Gala <hidden>
Date: 2008-05-21 21:47:36
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
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 <redacted> --- 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