Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy...

[pandora-kernel.git] / arch / i386 / kernel / i8259.c

diff --git a/arch/i386/kernel/i8259.c b/arch/i386/kernel/i8259.c
index ea5f4e7..c8d4582 100644 (file)
--- a/arch/i386/kernel/i8259.c
+++ b/arch/i386/kernel/i8259.c
@@ -34,35 +34,15 @@
  * moves to arch independent land
  */
 
-DEFINE_SPINLOCK(i8259A_lock);
-
-static void end_8259A_irq (unsigned int irq)
-{
-       if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)) &&
-                                                       irq_desc[irq].action)
-               enable_8259A_irq(irq);
-}
-
-#define shutdown_8259A_irq     disable_8259A_irq
-
 static int i8259A_auto_eoi;
-
+DEFINE_SPINLOCK(i8259A_lock);
 static void mask_and_ack_8259A(unsigned int);
 
-unsigned int startup_8259A_irq(unsigned int irq)
-{ 
-       enable_8259A_irq(irq);
-       return 0; /* never anything pending */
-}
-
-static struct hw_interrupt_type i8259A_irq_type = {
-       .typename = "XT-PIC",
-       .startup = startup_8259A_irq,
-       .shutdown = shutdown_8259A_irq,
-       .enable = enable_8259A_irq,
-       .disable = disable_8259A_irq,
-       .ack = mask_and_ack_8259A,
-       .end = end_8259A_irq,
+static struct irq_chip i8259A_chip = {
+       .name           = "XT-PIC",
+       .mask           = disable_8259A_irq,
+       .unmask         = enable_8259A_irq,
+       .mask_ack       = mask_and_ack_8259A,
 };
 
 /*
@@ -133,7 +113,8 @@ void make_8259A_irq(unsigned int irq)
 {
        disable_irq_nosync(irq);
        io_apic_irqs &= ~(1<<irq);
-       irq_desc[irq].chip = &i8259A_irq_type;
+       set_irq_chip_and_handler_name(irq, &i8259A_chip, handle_level_irq,
+                                     "XT");
        enable_irq(irq);
 }
 
@@ -327,12 +308,12 @@ void init_8259A(int auto_eoi)
        outb_p(SLAVE_ICW4_DEFAULT, PIC_SLAVE_IMR); /* (slave's support for AEOI in flat mode is to be investigated) */
        if (auto_eoi)
                /*
-                * in AEOI mode we just have to mask the interrupt
+                * In AEOI mode we just have to mask the interrupt
                 * when acking.
                 */
-               i8259A_irq_type.ack = disable_8259A_irq;
+               i8259A_chip.mask_ack = disable_8259A_irq;
        else
-               i8259A_irq_type.ack = mask_and_ack_8259A;
+               i8259A_chip.mask_ack = mask_and_ack_8259A;
 
        udelay(100);            /* wait for 8259A to initialize */
 
@@ -355,13 +336,13 @@ void init_8259A(int auto_eoi)
  */
  
 
-static irqreturn_t math_error_irq(int cpl, void *dev_id, struct pt_regs *regs)
+static irqreturn_t math_error_irq(int cpl, void *dev_id)
 {
        extern void math_error(void __user *);
        outb(0,0xF0);
        if (ignore_fpu_irq || !boot_cpu_data.hard_math)
                return IRQ_NONE;
-       math_error((void __user *)regs->eip);
+       math_error((void __user *)get_irq_regs()->eip);
        return IRQ_HANDLED;
 }
 
@@ -389,17 +370,21 @@ void __init init_ISA_irqs (void)
                        /*
                         * 16 old-style INTA-cycle interrupts:
                         */
-                       irq_desc[i].chip = &i8259A_irq_type;
+                       set_irq_chip_and_handler_name(i, &i8259A_chip,
+                                                     handle_level_irq, "XT");
                } else {
                        /*
                         * 'high' PCI IRQs filled in on demand
                         */
-                       irq_desc[i].chip = &no_irq_type;
+                       irq_desc[i].chip = &no_irq_chip;
                }
        }
 }
 
-void __init init_IRQ(void)
+/* Overridden in paravirt.c */
+void init_IRQ(void) __attribute__((weak, alias("native_init_IRQ")));
+
+void __init native_init_IRQ(void)
 {
        int i;