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Merge branches 'irq/genirq' and 'linus' into irq/core

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This commit is contained in:
Ingo Molnar
2009-03-16 09:20:13 +01:00
parent 8f8573ae9f cb065c06b6 5bee17f18b
commit edb35028e4
1009 changed files with 23245 additions and 8617 deletions
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29
arch/sparc/kernel/irq_64.c
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@ -323,17 +323,25 @@ static void sun4u_set_affinity(unsigned int virt_irq,
sun4u_irq_enable(virt_irq);
}
/* Don't do anything. The desc->status check for IRQ_DISABLED in
* handler_irq() will skip the handler call and that will leave the
* interrupt in the sent state. The next ->enable() call will hit the
* ICLR register to reset the state machine.
*
* This scheme is necessary, instead of clearing the Valid bit in the
* IMAP register, to handle the case of IMAP registers being shared by
* multiple INOs (and thus ICLR registers). Since we use a different
* virtual IRQ for each shared IMAP instance, the generic code thinks
* there is only one user so it prematurely calls ->disable() on
* free_irq().
*
* We have to provide an explicit ->disable() method instead of using
* NULL to get the default. The reason is that if the generic code
* sees that, it also hooks up a default ->shutdown method which
* invokes ->mask() which we do not want. See irq_chip_set_defaults().
*/
static void sun4u_irq_disable(unsigned int virt_irq)
{
struct irq_handler_data *data = get_irq_chip_data(virt_irq);
if (likely(data)) {
unsigned long imap = data->imap;
unsigned long tmp = upa_readq(imap);
tmp &= ~IMAP_VALID;
upa_writeq(tmp, imap);
}
}
static void sun4u_irq_eoi(unsigned int virt_irq)
@ -746,7 +754,8 @@ void handler_irq(int irq, struct pt_regs *regs)
desc = irq_desc + virt_irq;
desc->handle_irq(virt_irq, desc);
if (!(desc->status & IRQ_DISABLED))
desc->handle_irq(virt_irq, desc);
bucket_pa = next_pa;
}