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authorPaul Mundt <lethal@linux-sh.org>2009-11-02 01:43:20 -0500
committerPaul Mundt <lethal@linux-sh.org>2009-11-02 01:43:20 -0500
commit45b9deaf14e74543371aa8faea69c14e27b038c6 (patch)
tree485b9beab7f908557ab816fa473d7a5bdb494841 /arch/sh
parent3d0de414423a20af741b692243317f423827489b (diff)
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')
-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)
263{ 263{
264 plat_irq_setup(); 264 plat_irq_setup();
265 265
266 /*
267 * Pin any of the legacy IRQ vectors that haven't already been
268 * grabbed by the platform
269 */
270 reserve_irq_legacy();
271
266 /* Perform the machine specific initialisation */ 272 /* Perform the machine specific initialisation */
267 if (sh_mv.mv_init_irq) 273 if (sh_mv.mv_init_irq)
268 sh_mv.mv_init_irq(); 274 sh_mv.mv_init_irq();