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ARM: riscpc: convert ecard to use irq_alloc_descs()

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Use irq_alloc_descs() to allocate IRQs for expansion cards.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2012-03-01 17:50:33 +00:00
parent c402c11072
commit b4ac08492d
1 changed files with 13 additions and 9 deletions
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22
arch/arm/mach-rpc/ecard.c
View file

@ -42,6 +42,7 @@
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/kthread.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <asm/dma.h>
@ -977,8 +978,7 @@ EXPORT_SYMBOL(ecardm_iomap);
* If bit 1 of the first byte of the card is set, then the
* card does not exist.
*/
static int __init
ecard_probe(int slot, card_type_t type)
static int __init ecard_probe(int slot, unsigned irq, card_type_t type)
{
ecard_t **ecp;
ecard_t *ec;
@ -1032,19 +1032,18 @@ ecard_probe(int slot, card_type_t type)
break;
}
ec->irq = irq;
/*
* hook the interrupt handlers
*/
if (slot < 8) {
ec->irq = 32 + slot;
irq_set_chip_and_handler(ec->irq, &ecard_chip,
handle_level_irq);
irq_set_chip_data(ec->irq, ec);
set_irq_flags(ec->irq, IRQF_VALID);
}
if (slot == 8)
ec->irq = 11;
#ifdef CONFIG_ARCH_RPC
/* On RiscPC, only first two slots have DMA capability */
if (slot < 2)
@ -1074,23 +1073,28 @@ ecard_probe(int slot, card_type_t type)
static int __init ecard_init(void)
{
struct task_struct *task;
int slot, irqhw;
int slot, irqhw, irqbase;
irqbase = irq_alloc_descs(-1, 0, 8, -1);
if (irqbase < 0)
return irqbase;
task = kthread_run(ecard_task, NULL, "kecardd");
if (IS_ERR(task)) {
printk(KERN_ERR "Ecard: unable to create kernel thread: %ld\n",
PTR_ERR(task));
irq_free_descs(irqbase, 8);
return PTR_ERR(task);
}
printk("Probing expansion cards\n");
for (slot = 0; slot < 8; slot ++) {
if (ecard_probe(slot, ECARD_EASI) == -ENODEV)
ecard_probe(slot, ECARD_IOC);
if (ecard_probe(slot, irqbase + slot, ECARD_EASI) == -ENODEV)
ecard_probe(slot, irqbase + slot, ECARD_IOC);
}
ecard_probe(8, ECARD_IOC);
ecard_probe(8, 11, ECARD_IOC);
irqhw = ecard_probeirqhw();