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Merge branch 'genirq' of master.kernel.org:/home/rmk/linux-2.6-arm

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* 'genirq' of master.kernel.org:/home/rmk/linux-2.6-arm: (24 commits)
  [ARM] 3683/2:  ARM: Convert at91rm9200 to generic irq handling
  [ARM] 3682/2:  ARM: Convert ixp4xx to generic irq handling
  [ARM] 3702/1: ARM: Convert ixp23xx to generic irq handling
  [ARM] 3701/1: ARM: Convert plat-omap to generic irq handling
  [ARM] 3700/1: ARM: Convert lh7a40x to generic irq handling
  [ARM] 3699/1: ARM: Convert s3c2410 to generic irq handling
  [ARM] 3698/1: ARM: Convert sa1100 to generic irq handling
  [ARM] 3697/1: ARM: Convert shark to generic irq handling
  [ARM] 3696/1: ARM: Convert clps711x to generic irq handling
  [ARM] 3694/1: ARM: Convert ecard driver to generic irq handling
  [ARM] 3693/1: ARM: Convert omap1 to generic irq handling
  [ARM] 3691/1: ARM: Convert imx to generic irq handling
  [ARM] 3688/1: ARM: Convert clps7500 to generic irq handling
  [ARM] 3687/1: ARM: Convert integrator to generic irq handling
  [ARM] 3685/1: ARM: Convert pxa to generic irq handling
  [ARM] 3684/1: ARM: Convert l7200 to generic irq handling
  [ARM] 3681/1: ARM: Convert ixp2000 to generic irq handling
  [ARM] 3680/1: ARM: Convert footbridge to generic irq handling
  [ARM] 3695/1: ARM drivers/pcmcia: Fixup includes
  [ARM] 3689/1: ARM drivers/input/touchscreen: Fixup includes
  ...

Manual conflict resolved in kernel/irq/handle.c (butt-ugly ARM tickless
code).
This commit is contained in:
Linus Torvalds
2006-07-02 15:07:45 -07:00
parent a8c4c20dfa 07d265dd59
commit b4b9034132
51 changed files with 208 additions and 1082 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
kernel/irq/chip.c
View File

@ -462,9 +462,18 @@ __set_irq_handler(unsigned int irq,
if (!handle)
handle = handle_bad_irq;
if (is_chained && desc->chip == &no_irq_chip)
printk(KERN_WARNING "Trying to install "
"chained interrupt type for IRQ%d\n", irq);
if (desc->chip == &no_irq_chip) {
printk(KERN_WARNING "Trying to install %sinterrupt handler "
"for IRQ%d\n", is_chained ? "chained " : " ", irq);
/*
* Some ARM implementations install a handler for really dumb
* interrupt hardware without setting an irq_chip. This worked
* with the ARM no_irq_chip but the check in setup_irq would
* prevent us to setup the interrupt at all. Switch it to
* dummy_irq_chip for easy transition.
*/
desc->chip = &dummy_irq_chip;
}
spin_lock_irqsave(&desc->lock, flags);

29
kernel/irq/handle.c
View File

@ -16,6 +16,10 @@
#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
#if defined(CONFIG_NO_IDLE_HZ) && defined(CONFIG_ARM)
#include <asm/dyntick.h>
#endif
#include "internals.h"
/**
@ -91,6 +95,22 @@ struct irq_chip no_irq_chip = {
.end = noop,
};
/*
* Generic dummy implementation which can be used for
* real dumb interrupt sources
*/
struct irq_chip dummy_irq_chip = {
.name = "dummy",
.startup = noop_ret,
.shutdown = noop,
.enable = noop,
.disable = noop,
.ack = noop,
.mask = noop,
.unmask = noop,
.end = noop,
};
/*
* Special, empty irq handler:
*/
@ -113,6 +133,15 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
irqreturn_t ret, retval = IRQ_NONE;
unsigned int status = 0;
#if defined(CONFIG_NO_IDLE_HZ) && defined(CONFIG_ARM)
if (!(action->flags & SA_TIMER) && system_timer->dyn_tick != NULL) {
write_seqlock(&xtime_lock);
if (system_timer->dyn_tick->state & DYN_TICK_ENABLED)
system_timer->dyn_tick->handler(irq, 0, regs);
write_sequnlock(&xtime_lock);
}
#endif
if (!(action->flags & IRQF_DISABLED))
local_irq_enable();