diff options
| author | Kyle McMartin <kyle@redhat.com> | 2010-10-14 22:31:25 -0400 |
|---|---|---|
| committer | Matt Turner <mattst88@monolith.freenet-rz.de> | 2011-01-17 05:42:12 +0100 |
| commit | a891b393dd7f6ed84ecee98c0eac4a808ff2cbbc (patch) | |
| tree | ab4ee31ef54691f492e77dfc2d937f62c055cb1a /arch/alpha/kernel/irq.c | |
| parent | d5ccde0a64c3dbe954a8a13a6ba9fb3b6d7c6225 (diff) | |
| download | blackbird-op-linux-a891b393dd7f6ed84ecee98c0eac4a808ff2cbbc.tar.gz blackbird-op-linux-a891b393dd7f6ed84ecee98c0eac4a808ff2cbbc.zip | |
alpha: irq clean up
Stop touching irq_desc[irq] directly, instead use accessor
functions provided. Use irq_has_action instead of directly
testing the irq_desc.
Tested-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'arch/alpha/kernel/irq.c')
| -rw-r--r-- | arch/alpha/kernel/irq.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c index ecfa51eafd75..cea8913e74be 100644 --- a/arch/alpha/kernel/irq.c +++ b/arch/alpha/kernel/irq.c @@ -44,10 +44,11 @@ static char irq_user_affinity[NR_IRQS]; int irq_select_affinity(unsigned int irq) { + struct irq_desc *desc = irq_to_desc[irq]; static int last_cpu; int cpu = last_cpu + 1; - if (!irq_desc[irq].chip->set_affinity || irq_user_affinity[irq]) + if (!desc || !get_irq_desc_chip(desc)->set_affinity || irq_user_affinity[irq]) return 1; while (!cpu_possible(cpu) || @@ -55,8 +56,8 @@ int irq_select_affinity(unsigned int irq) cpu = (cpu < (NR_CPUS-1) ? cpu + 1 : 0); last_cpu = cpu; - cpumask_copy(irq_desc[irq].affinity, cpumask_of(cpu)); - irq_desc[irq].chip->set_affinity(irq, cpumask_of(cpu)); + cpumask_copy(desc->affinity, cpumask_of(cpu)); + get_irq_desc_chip(desc)->set_affinity(irq, cpumask_of(cpu)); return 0; } #endif /* CONFIG_SMP */ @@ -67,6 +68,7 @@ show_interrupts(struct seq_file *p, void *v) int j; int irq = *(loff_t *) v; struct irqaction * action; + struct irq_desc *desc; unsigned long flags; #ifdef CONFIG_SMP @@ -79,8 +81,13 @@ show_interrupts(struct seq_file *p, void *v) #endif if (irq < ACTUAL_NR_IRQS) { - raw_spin_lock_irqsave(&irq_desc[irq].lock, flags); - action = irq_desc[irq].action; + desc = irq_to_desc(irq); + + if (!desc) + return 0; + + raw_spin_lock_irqsave(&desc->lock, flags); + action = desc->action; if (!action) goto unlock; seq_printf(p, "%3d: ", irq); @@ -90,7 +97,7 @@ show_interrupts(struct seq_file *p, void *v) for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(irq, j)); #endif - seq_printf(p, " %14s", irq_desc[irq].chip->name); + seq_printf(p, " %14s", get_irq_desc_chip(desc)->name); seq_printf(p, " %c%s", (action->flags & IRQF_DISABLED)?'+':' ', action->name); @@ -103,7 +110,7 @@ show_interrupts(struct seq_file *p, void *v) seq_putc(p, '\n'); unlock: - raw_spin_unlock_irqrestore(&irq_desc[irq].lock, flags); + raw_spin_unlock_irqrestore(&desc->lock, flags); } else if (irq == ACTUAL_NR_IRQS) { #ifdef CONFIG_SMP seq_puts(p, "IPI: "); @@ -142,8 +149,10 @@ handle_irq(int irq) * handled by some other CPU. (or is disabled) */ static unsigned int illegal_count=0; + struct irq_desc *desc = irq_to_desc(irq); - if ((unsigned) irq > ACTUAL_NR_IRQS && illegal_count < MAX_ILLEGAL_IRQS ) { + if (!desc || ((unsigned) irq > ACTUAL_NR_IRQS && + illegal_count < MAX_ILLEGAL_IRQS)) { irq_err_count++; illegal_count++; printk(KERN_CRIT "device_interrupt: invalid interrupt %d\n", @@ -159,7 +168,7 @@ handle_irq(int irq) * at IPL 0. */ local_irq_disable(); - generic_handle_irq(irq); + generic_handle_irq_desc(irq, desc); irq_exit(); } |
