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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2006-11-01 20:08:36 +0300
committerRalf Baechle <ralf@linux-mips.org>2006-11-30 04:14:46 +0300
commit1603b5aca4f15b34848fb5594d0c7b6333b99144 (patch)
tree79272aa41d6510b7256df62e287676885c3960cf /arch/mips/sibyte/sb1250/irq.c
parentc87b6ebaea034c0e0ce86127870cf1511a307b64 (diff)
downloadlinux-1603b5aca4f15b34848fb5594d0c7b6333b99144.tar.xz
[MIPS] IRQ cleanups
This is a big irq cleanup patch. * Use set_irq_chip() to register irq_chip. * Initialize .mask, .unmask, .mask_ack field. Functions for these method are already exist in most case. * Do not initialize .startup, .shutdown, .enable, .disable fields if default routines provided by irq_chip_set_defaults() were suitable. * Remove redundant irq_desc initializations. * Remove unnecessary local_irq_save/local_irq_restore, spin_lock. With this cleanup, it would be easy to switch to slightly lightwait irq flow handlers (handle_level_irq(), etc.) instead of __do_IRQ(). Though whole this patch is quite large, changes in each irq_chip are not quite simple. Please review and test on your platform. Thanks. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/sibyte/sb1250/irq.c')
-rw-r--r--arch/mips/sibyte/sb1250/irq.c30
1 files changed, 6 insertions, 24 deletions
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index d5d26770daf6..82ce7533053f 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -44,11 +44,9 @@
*/
-#define shutdown_sb1250_irq disable_sb1250_irq
static void end_sb1250_irq(unsigned int irq);
static void enable_sb1250_irq(unsigned int irq);
static void disable_sb1250_irq(unsigned int irq);
-static unsigned int startup_sb1250_irq(unsigned int irq);
static void ack_sb1250_irq(unsigned int irq);
#ifdef CONFIG_SMP
static void sb1250_set_affinity(unsigned int irq, cpumask_t mask);
@@ -70,11 +68,10 @@ extern char sb1250_duart_present[];
static struct irq_chip sb1250_irq_type = {
.typename = "SB1250-IMR",
- .startup = startup_sb1250_irq,
- .shutdown = shutdown_sb1250_irq,
- .enable = enable_sb1250_irq,
- .disable = disable_sb1250_irq,
.ack = ack_sb1250_irq,
+ .mask = disable_sb1250_irq,
+ .mask_ack = ack_sb1250_irq,
+ .unmask = enable_sb1250_irq,
.end = end_sb1250_irq,
#ifdef CONFIG_SMP
.set_affinity = sb1250_set_affinity
@@ -163,14 +160,6 @@ static void sb1250_set_affinity(unsigned int irq, cpumask_t mask)
/*****************************************************************************/
-static unsigned int startup_sb1250_irq(unsigned int irq)
-{
- sb1250_unmask_irq(sb1250_irq_owner[irq], irq);
-
- return 0; /* never anything pending */
-}
-
-
static void disable_sb1250_irq(unsigned int irq)
{
sb1250_mask_irq(sb1250_irq_owner[irq], irq);
@@ -239,16 +228,9 @@ void __init init_sb1250_irqs(void)
{
int i;
- for (i = 0; i < NR_IRQS; i++) {
- irq_desc[i].status = IRQ_DISABLED;
- irq_desc[i].action = 0;
- irq_desc[i].depth = 1;
- if (i < SB1250_NR_IRQS) {
- irq_desc[i].chip = &sb1250_irq_type;
- sb1250_irq_owner[i] = 0;
- } else {
- irq_desc[i].chip = &no_irq_chip;
- }
+ for (i = 0; i < SB1250_NR_IRQS; i++) {
+ set_irq_chip(i, &sb1250_irq_type);
+ sb1250_irq_owner[i] = 0;
}
}