Preparatory patch for linear interrupt domains.
Signed-off-by: Thomas Gleixner <t...@linutronix.de>
---
kernel/irq/generic-chip.c | 50 +++++++++++++++++++++++++++++++---------------
1 file changed, 34 insertions(+), 16 deletions(-)
Index: linux-2.6/kernel/irq/generic-chip.c
===================================================================
--- linux-2.6.orig/kernel/irq/generic-chip.c
+++ linux-2.6/kernel/irq/generic-chip.c
@@ -186,6 +186,19 @@ int irq_gc_set_wake(struct irq_data *d,
return 0;
}
+static void
+irq_init_generic_chip(struct irq_chip_generic *gc, const char *name,
+ int num_ct, unsigned int irq_base,
+ void __iomem *reg_base, irq_flow_handler_t handler)
+{
+ raw_spin_lock_init(&gc->lock);
+ gc->num_ct = num_ct;
+ gc->irq_base = irq_base;
+ gc->reg_base = reg_base;
+ gc->chip_types->chip.name = name;
+ gc->chip_types->handler = handler;
+}
+
/**
* irq_alloc_generic_chip - Allocate a generic chip and initialize it
* @name: Name of the irq chip
@@ -206,17 +219,31 @@ irq_alloc_generic_chip(const char *name,
gc = kzalloc(sz, GFP_KERNEL);
if (gc) {
- raw_spin_lock_init(&gc->lock);
- gc->num_ct = num_ct;
- gc->irq_base = irq_base;
- gc->reg_base = reg_base;
- gc->chip_types->chip.name = name;
- gc->chip_types->handler = handler;
+ irq_init_generic_chip(gc, name, num_ct, irq_base, reg_base,
+ handler);
}
return gc;
}
EXPORT_SYMBOL_GPL(irq_alloc_generic_chip);
+static void
+irq_gc_init_mask_cache(struct irq_chip_generic *gc, enum irq_gc_flags flags)
+{
+ struct irq_chip_type *ct = gc->chip_types;
+ u32 *mskptr = &gc->mask_cache, mskreg = ct->regs.mask;
+ int i;
+
+ for (i = 0; i < gc->num_ct; i++) {
+ if (flags & IRQ_GC_MASK_CACHE_PER_TYPE) {
+ mskptr = &ct[i].mask_cache_priv;
+ mskreg = ct[i].regs.mask;
+ }
+ ct[i].mask_cache = mskptr;
+ if (flags & IRQ_GC_INIT_MASK_CACHE)
+ *mskptr = irq_reg_readl(gc->reg_base + mskreg);
+ }
+}
+
/*
* Separate lockdep class for interrupt chip which can nest irq_desc
* lock.
@@ -242,21 +269,12 @@ void irq_setup_generic_chip(struct irq_c
struct irq_chip_type *ct = gc->chip_types;
struct irq_chip *chip = &ct->chip;
unsigned int i;
- u32 *mskptr = &gc->mask_cache, mskreg = ct->regs.mask;
raw_spin_lock(&gc_lock);
list_add_tail(&gc->list, &gc_list);
raw_spin_unlock(&gc_lock);
- for (i = 0; i < gc->num_ct; i++) {
- if (flags & IRQ_GC_MASK_CACHE_PER_TYPE) {
- mskptr = &ct[i].mask_cache_priv;
- mskreg = ct[i].regs.mask;
- }
- ct[i].mask_cache = mskptr;
- if (flags & IRQ_GC_INIT_MASK_CACHE)
- *mskptr = irq_reg_readl(gc->reg_base + mskreg);
- }
+ irq_gc_init_mask_cache(gc, flags);
for (i = gc->irq_base; msk; msk >>= 1, i++) {
if (!(msk & 0x01))
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
