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authorPaul Mundt <lethal@linux-sh.org>2009-11-02 15:43:20 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-11-02 15:43:20 +0900
commit45b9deaf14e74543371aa8faea69c14e27b038c6 (patch)
tree485b9beab7f908557ab816fa473d7a5bdb494841 /arch/sh/kernel
parent3d0de414423a20af741b692243317f423827489b (diff)
downloadblackbird-op-linux-45b9deaf14e74543371aa8faea69c14e27b038c6.tar.gz
blackbird-op-linux-45b9deaf14e74543371aa8faea69c14e27b038c6.zip
sh: intc: Handle legacy IRQ reservation in vector map.
Different CPUs will have different starting vectors, with varying amounts of reserved or unusable vector space prior to the first slot. This introduces a legacy vector reservation system that inserts itself in between the CPU vector map registration and the platform specific IRQ setup. This works fine in practice as the only new vectors that boards need to establish on their own should be dynamically allocated rather than arbitrarily assigned. As a plus, this also makes all of the converted platforms sparseirq ready. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel')
-rw-r--r--arch/sh/kernel/irq.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index 7aa89fac1f81..e1913f28f418 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -263,6 +263,12 @@ void __init init_IRQ(void)
{
plat_irq_setup();
+ /*
+ * Pin any of the legacy IRQ vectors that haven't already been
+ * grabbed by the platform
+ */
+ reserve_irq_legacy();
+
/* Perform the machine specific initialisation */
if (sh_mv.mv_init_irq)
sh_mv.mv_init_irq();
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