From 22780e23c629303474797d17e7f09ad7721ef55b Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 16 Feb 2006 14:37:05 -0800 Subject: [PATCH] [SPARC64]: Set dummy bucket->{imap,iclr} unique on SUN4V. So that free_irq() disable's the IRQ correctly. Signed-off-by: David S. Miller --- arch/sparc64/kernel/irq.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c index e1729e5..580b4de 100644 --- a/arch/sparc64/kernel/irq.c +++ b/arch/sparc64/kernel/irq.c @@ -143,7 +143,6 @@ void enable_irq(unsigned int irq) { struct ino_bucket *bucket = __bucket(irq); unsigned long imap; - unsigned long tid; imap = bucket->imap; if (imap == 0UL) @@ -169,6 +168,8 @@ void enable_irq(unsigned int irq) printk("sun4v_intr_setstate(%x): " "err(%d)\n", ino, err); } else { + unsigned long tid; + if (tlb_type == cheetah || tlb_type == cheetah_plus) { unsigned long ver; @@ -342,9 +343,12 @@ unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino, int pil, unsign /* Catch accidental accesses to these things. IMAP/ICLR handling * is done by hypervisor calls on sun4v platforms, not by direct * register accesses. + * + * But we need to make them look unique for the disable_irq() logic + * in free_irq(). */ - bucket->imap = ~0UL; - bucket->iclr = ~0UL; + bucket->imap = ~0UL - sysino; + bucket->iclr = ~0UL - sysino; bucket->pil = pil; bucket->flags = flags; @@ -547,7 +551,6 @@ void free_irq(unsigned int irq, void *dev_id) bucket = __bucket(irq); if (bucket != &pil0_dummy_bucket) { struct irq_desc *desc = bucket->irq_info; - unsigned long imap = bucket->imap; int ent, i; for (i = 0; i < MAX_IRQ_DESC_ACTION; i++) { @@ -560,6 +563,8 @@ void free_irq(unsigned int irq, void *dev_id) } if (!desc->action_active_mask) { + unsigned long imap = bucket->imap; + /* This unique interrupt source is now inactive. */ bucket->flags &= ~IBF_ACTIVE; @@ -803,7 +808,6 @@ EXPORT_SYMBOL(probe_irq_off); static int retarget_one_irq(struct irqaction *p, int goal_cpu) { struct ino_bucket *bucket = get_ino_in_irqaction(p) + ivector_table; - unsigned long imap = bucket->imap; while (!cpu_online(goal_cpu)) { if (++goal_cpu >= NR_CPUS) @@ -816,6 +820,7 @@ static int retarget_one_irq(struct irqaction *p, int goal_cpu) sun4v_intr_settarget(ino, goal_cpu); sun4v_intr_setenabled(ino, HV_INTR_ENABLED); } else { + unsigned long imap = bucket->imap; unsigned int tid; if (tlb_type == cheetah || tlb_type == cheetah_plus) { -- 2.7.4