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generic: sparse irqs: use irq_desc() together with dyn_array, instead of irq_desc[]

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add CONFIG_HAVE_SPARSE_IRQ to for use condensed array.
Get rid of irq_desc[] array assumptions.

Preallocate 32 irq_desc, and irq_desc() will try to get more.

( No change in functionality is expected anywhere, except the odd build
  failure where we missed a code site or where a crossing commit itroduces
  new irq_desc[] usage. )

v2: according to Eric, change get_irq_desc() to irq_desc()

Signed-off-by: Yinghai Lu <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Yinghai Lu 2008-08-19 20:50:05 -07:00 • committed by Ingo Molnar
commit 08678b0841
28 changed files with 404 additions and 187 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/parisc/dino.c
View file

@ -298,7 +298,8 @@ struct pci_port_ops dino_port_ops = {
static void dino_disable_irq(unsigned int irq)
{
struct dino_device *dino_dev = irq_desc[irq].chip_data;
struct irq_desc *desc = irq_to_desc(irq);
struct dino_device *dino_dev = desc->chip_data;
int local_irq = gsc_find_local_irq(irq, dino_dev->global_irq, DINO_LOCAL_IRQS);
DBG(KERN_WARNING "%s(0x%p, %d)\n", __func__, dino_dev, irq);
@ -310,7 +311,8 @@ static void dino_disable_irq(unsigned int irq)
static void dino_enable_irq(unsigned int irq)
{
struct dino_device *dino_dev = irq_desc[irq].chip_data;
struct irq_desc *desc = irq_to_desc(irq);
struct dino_device *dino_dev = desc->chip_data;
int local_irq = gsc_find_local_irq(irq, dino_dev->global_irq, DINO_LOCAL_IRQS);
u32 tmp;

4
drivers/parisc/eisa.c
View file

@ -346,10 +346,10 @@ static int __init eisa_probe(struct parisc_device *dev)
}
/* Reserve IRQ2 */
irq_desc[2].action = &irq2_action;
irq_to_desc(2)->action = &irq2_action;
for (i = 0; i < 16; i++) {
irq_desc[i].chip = &eisa_interrupt_type;
irq_to_desc(i)->chip = &eisa_interrupt_type;
}
EISA_bus = 1;

12
drivers/parisc/gsc.c
View file

@ -108,7 +108,8 @@ int gsc_find_local_irq(unsigned int irq, int *global_irqs, int limit)
static void gsc_asic_disable_irq(unsigned int irq)
{
struct gsc_asic *irq_dev = irq_desc[irq].chip_data;
struct irq_desc *desc = irq_to_desc(irq);
struct gsc_asic *irq_dev = desc->chip_data;
int local_irq = gsc_find_local_irq(irq, irq_dev->global_irq, 32);
u32 imr;
@ -123,7 +124,8 @@ static void gsc_asic_disable_irq(unsigned int irq)
static void gsc_asic_enable_irq(unsigned int irq)
{
struct gsc_asic *irq_dev = irq_desc[irq].chip_data;
struct irq_desc *desc = irq_to_desc(irq);
struct gsc_asic *irq_dev = desc->chip_data;
int local_irq = gsc_find_local_irq(irq, irq_dev->global_irq, 32);
u32 imr;
@ -159,12 +161,14 @@ static struct hw_interrupt_type gsc_asic_interrupt_type = {
int gsc_assign_irq(struct hw_interrupt_type *type, void *data)
{
static int irq = GSC_IRQ_BASE;
struct irq_desc *desc;
if (irq > GSC_IRQ_MAX)
return NO_IRQ;
irq_desc[irq].chip = type;
irq_desc[irq].chip_data = data;
desc = irq_to_desc(irq);
desc->chip = type;
desc->chip_data = data;
return irq++;
}

4
drivers/parisc/iosapic.c
View file

@ -619,7 +619,9 @@ iosapic_set_irt_data( struct vector_info *vi, u32 *dp0, u32 *dp1)
static struct vector_info *iosapic_get_vector(unsigned int irq)
{
return irq_desc[irq].chip_data;
struct irq_desc *desc = irq_to_desc(irq);
return desc->chip_data;
}
static void iosapic_disable_irq(unsigned int irq)

4
drivers/parisc/superio.c
View file

@ -363,7 +363,9 @@ int superio_fixup_irq(struct pci_dev *pcidev)
#endif
for (i = 0; i < 16; i++) {
irq_desc[i].chip = &superio_interrupt_type;
struct irq_desc *desc = irq_to_desc(i);
desc->chip = &superio_interrupt_type;
}
/*