Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/mfasheh...

[linux-2.6-omap-h63xx.git] / kernel / irq / chip.c

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index ebfd24a41858fd0c9751bfa356a9e85248e57c95..475e8a71bcdc19772b312461b95ba0b171f1790e 100644 (file)
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -39,6 +39,7 @@ void dynamic_irq_init(unsigned int irq)
        desc->chip = &no_irq_chip;
        desc->handle_irq = handle_bad_irq;
        desc->depth = 1;
+       desc->msi_desc = NULL;
        desc->handler_data = NULL;
        desc->chip_data = NULL;
        desc->action = NULL;
@@ -74,6 +75,9 @@ void dynamic_irq_cleanup(unsigned int irq)
                WARN_ON(1);
                return;
        }
+       desc->msi_desc = NULL;
+       desc->handler_data = NULL;
+       desc->chip_data = NULL;
        desc->handle_irq = handle_bad_irq;
        desc->chip = &no_irq_chip;
        spin_unlock_irqrestore(&desc->lock, flags);
@@ -161,6 +165,30 @@ int set_irq_data(unsigned int irq, void *data)
 }
 EXPORT_SYMBOL(set_irq_data);
 
+/**
+ *     set_irq_data - set irq type data for an irq
+ *     @irq:   Interrupt number
+ *     @data:  Pointer to interrupt specific data
+ *
+ *     Set the hardware irq controller data for an irq
+ */
+int set_irq_msi(unsigned int irq, struct msi_desc *entry)
+{
+       struct irq_desc *desc;
+       unsigned long flags;
+
+       if (irq >= NR_IRQS) {
+               printk(KERN_ERR
+                      "Trying to install msi data for IRQ%d\n", irq);
+               return -EINVAL;
+       }
+       desc = irq_desc + irq;
+       spin_lock_irqsave(&desc->lock, flags);
+       desc->msi_desc = entry;
+       spin_unlock_irqrestore(&desc->lock, flags);
+       return 0;
+}
+
 /**
  *     set_irq_chip_data - set irq chip data for an irq
  *     @irq:   Interrupt number
@@ -517,10 +545,9 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
 
        if (!handle)
                handle = handle_bad_irq;
-
-       if (desc->chip == &no_irq_chip) {
+       else if (desc->chip == &no_irq_chip) {
                printk(KERN_WARNING "Trying to install %sinterrupt handler "
-                      "for IRQ%d\n", is_chained ? "chained " : " ", irq);
+                      "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