genirq: cleanup the sparseirq modifications
Thomas Gleixner [Thu, 16 Oct 2008 07:55:00 +0000 (09:55 +0200)]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

kernel/irq/chip.c
kernel/irq/handle.c
kernel/irq/manage.c
kernel/irq/proc.c
kernel/irq/spurious.c

index d96d6f6..4895fde 100644 (file)
  */
 void dynamic_irq_init(unsigned int irq)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
 
-       /* first time to use this irq_desc */
-       desc = irq_to_desc(irq);
        if (!desc) {
                WARN(1, KERN_ERR "Trying to initialize invalid IRQ%d\n", irq);
                return;
@@ -58,10 +56,9 @@ void dynamic_irq_init(unsigned int irq)
  */
 void dynamic_irq_cleanup(unsigned int irq)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
 
-       desc = irq_to_desc(irq);
        if (!desc) {
                WARN(1, KERN_ERR "Trying to cleanup invalid IRQ%d\n", irq);
                return;
@@ -90,10 +87,9 @@ void dynamic_irq_cleanup(unsigned int irq)
  */
 int set_irq_chip(unsigned int irq, struct irq_chip *chip)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
 
-       desc = irq_to_desc(irq);
        if (!desc) {
                WARN(1, KERN_ERR "Trying to install chip for IRQ%d\n", irq);
                return -EINVAL;
@@ -118,11 +114,10 @@ EXPORT_SYMBOL(set_irq_chip);
  */
 int set_irq_type(unsigned int irq, unsigned int type)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
        int ret = -ENXIO;
 
-       desc = irq_to_desc(irq);
        if (!desc) {
                printk(KERN_ERR "Trying to set irq type for IRQ%d\n", irq);
                return -ENODEV;
@@ -147,10 +142,9 @@ EXPORT_SYMBOL(set_irq_type);
  */
 int set_irq_data(unsigned int irq, void *data)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
 
-       desc = irq_to_desc(irq);
        if (!desc) {
                printk(KERN_ERR
                       "Trying to install controller data for IRQ%d\n", irq);
@@ -173,10 +167,9 @@ EXPORT_SYMBOL(set_irq_data);
  */
 int set_irq_msi(unsigned int irq, struct msi_desc *entry)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
 
-       desc = irq_to_desc(irq);
        if (!desc) {
                printk(KERN_ERR
                       "Trying to install msi data for IRQ%d\n", irq);
@@ -200,10 +193,9 @@ int set_irq_msi(unsigned int irq, struct msi_desc *entry)
  */
 int set_irq_chip_data(unsigned int irq, void *data)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
 
-       desc = irq_to_desc(irq);
        if (!desc) {
                printk(KERN_ERR
                       "Trying to install chip data for IRQ%d\n", irq);
@@ -228,9 +220,8 @@ EXPORT_SYMBOL(set_irq_chip_data);
  */
 static void default_enable(unsigned int irq)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
 
-       desc = irq_to_desc(irq);
        desc->chip->unmask(irq);
        desc->status &= ~IRQ_MASKED;
 }
@@ -247,11 +238,9 @@ static void default_disable(unsigned int irq)
  */
 static unsigned int default_startup(unsigned int irq)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
 
-       desc = irq_to_desc(irq);
        desc->chip->enable(irq);
-
        return 0;
 }
 
@@ -260,9 +249,8 @@ static unsigned int default_startup(unsigned int irq)
  */
 static void default_shutdown(unsigned int irq)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
 
-       desc = irq_to_desc(irq);
        desc->chip->mask(irq);
        desc->status |= IRQ_MASKED;
 }
@@ -550,10 +538,9 @@ void
 __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
                  const char *name)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
 
-       desc = irq_to_desc(irq);
        if (!desc) {
                printk(KERN_ERR
                       "Trying to install type control for IRQ%d\n", irq);
@@ -614,13 +601,11 @@ set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip,
 
 void __init set_irq_noprobe(unsigned int irq)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
 
-       desc = irq_to_desc(irq);
        if (!desc) {
                printk(KERN_ERR "Trying to mark IRQ%d non-probeable\n", irq);
-
                return;
        }
 
@@ -631,13 +616,11 @@ void __init set_irq_noprobe(unsigned int irq)
 
 void __init set_irq_probe(unsigned int irq)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
 
-       desc = irq_to_desc(irq);
        if (!desc) {
                printk(KERN_ERR "Trying to mark IRQ%d probeable\n", irq);
-
                return;
        }
 
index 9fe86b3..a69368f 100644 (file)
@@ -68,9 +68,8 @@ struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
  */
 static void ack_bad(unsigned int irq)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
 
-       desc = irq_to_desc(irq);
        print_irq_desc(irq, desc);
        ack_bad_irq(irq);
 }
index ad2ce72..c498a1b 100644 (file)
@@ -140,10 +140,9 @@ int irq_select_affinity(unsigned int irq)
  */
 void disable_irq_nosync(unsigned int irq)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
 
-       desc = irq_to_desc(irq);
        if (!desc)
                return;
 
@@ -170,9 +169,8 @@ EXPORT_SYMBOL(disable_irq_nosync);
  */
 void disable_irq(unsigned int irq)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
 
-       desc = irq_to_desc(irq);
        if (!desc)
                return;
 
@@ -213,10 +211,9 @@ static void __enable_irq(struct irq_desc *desc, unsigned int irq)
  */
 void enable_irq(unsigned int irq)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
 
-       desc = irq_to_desc(irq);
        if (!desc)
                return;
 
@@ -291,10 +288,9 @@ EXPORT_SYMBOL(set_irq_wake);
  */
 int can_request_irq(unsigned int irq, unsigned long irqflags)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        struct irqaction *action;
 
-       desc = irq_to_desc(irq);
        if (!desc)
                return 0;
 
@@ -355,16 +351,15 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
  * Internal function to register an irqaction - typically used to
  * allocate special interrupts that are part of the architecture.
  */
-int setup_irq(unsigned int irq, struct irqaction *new)
+static int
+__setup_irq(unsigned int irq, struct irq_desc * desc, struct irqaction *new)
 {
-       struct irq_desc *desc;
        struct irqaction *old, **p;
        const char *old_name = NULL;
        unsigned long flags;
        int shared = 0;
        int ret;
 
-       desc = irq_to_desc(irq);
        if (!desc)
                return -EINVAL;
 
@@ -504,6 +499,20 @@ mismatch:
 }
 
 /**
+ *     setup_irq - setup an interrupt
+ *     @irq: Interrupt line to setup
+ *     @act: irqaction for the interrupt
+ *
+ * Used to statically setup interrupts in the early boot process.
+ */
+int setup_irq(unsigned int irq, struct irqaction *act)
+{
+       struct irq_desc *desc = irq_to_desc(irq);
+
+       return __setup_irq(irq, desc, act);
+}
+
+/**
  *     free_irq - free an interrupt
  *     @irq: Interrupt line to free
  *     @dev_id: Device identity to free
@@ -519,13 +528,12 @@ mismatch:
  */
 void free_irq(unsigned int irq, void *dev_id)
 {
-       struct irq_desc *desc;
+       struct irq_desc *desc = irq_to_desc(irq);
        struct irqaction **p;
        unsigned long flags;
 
        WARN_ON(in_interrupt());
 
-       desc = irq_to_desc(irq);
        if (!desc)
                return;
 
@@ -624,8 +632,8 @@ int request_irq(unsigned int irq, irq_handler_t handler,
                unsigned long irqflags, const char *devname, void *dev_id)
 {
        struct irqaction *action;
-       int retval;
        struct irq_desc *desc;
+       int retval;
 
 #ifdef CONFIG_LOCKDEP
        /*
@@ -662,7 +670,7 @@ int request_irq(unsigned int irq, irq_handler_t handler,
        action->next = NULL;
        action->dev_id = dev_id;
 
-       retval = setup_irq(irq, action);
+       retval = __setup_irq(irq, desc, action);
        if (retval)
                kfree(action);
 
index bc0993d..fac014a 100644 (file)
@@ -215,6 +215,7 @@ void unregister_handler_proc(unsigned int irq, struct irqaction *action)
 {
        if (action->dir) {
                struct irq_desc *desc = irq_to_desc(irq);
+
                remove_proc_entry(action->dir->name, desc->dir);
        }
 }
index ec5a4be..dd364c1 100644 (file)
@@ -26,8 +26,7 @@ static DEFINE_TIMER(poll_spurious_irq_timer, poll_spurious_irqs, 0, 0);
 static int try_one_irq(int irq, struct irq_desc *desc)
 {
        struct irqaction *action;
-       int ok = 0;
-       int work = 0;   /* Did we do work for a real IRQ */
+       int ok = 0, work = 0;
 
        spin_lock(&desc->lock);
        /* Already running on another processor */
@@ -88,9 +87,8 @@ static int try_one_irq(int irq, struct irq_desc *desc)
 
 static int misrouted_irq(int irq)
 {
-       int i;
-       int ok = 0;
        struct irq_desc *desc;
+       int i, ok = 0;
 
        for_each_irq_desc(i, desc) {
                if (!i)
@@ -108,8 +106,8 @@ static int misrouted_irq(int irq)
 
 static void poll_spurious_irqs(unsigned long dummy)
 {
-       int i;
        struct irq_desc *desc;
+       int i;
 
        for_each_irq_desc(i, desc) {
                unsigned int status;
@@ -126,7 +124,8 @@ static void poll_spurious_irqs(unsigned long dummy)
                try_one_irq(i, desc);
        }
 
-       mod_timer(&poll_spurious_irq_timer, jiffies + POLL_SPURIOUS_IRQ_INTERVAL);
+       mod_timer(&poll_spurious_irq_timer,
+                 jiffies + POLL_SPURIOUS_IRQ_INTERVAL);
 }
 
 /*
@@ -177,7 +176,9 @@ report_bad_irq(unsigned int irq, struct irq_desc *desc, irqreturn_t action_ret)
        }
 }
 
-static inline int try_misrouted_irq(unsigned int irq, struct irq_desc *desc, irqreturn_t action_ret)
+static inline int
+try_misrouted_irq(unsigned int irq, struct irq_desc *desc,
+                 irqreturn_t action_ret)
 {
        struct irqaction *action;
 
@@ -253,7 +254,8 @@ void note_interrupt(unsigned int irq, struct irq_desc *desc,
                desc->depth++;
                desc->chip->disable(irq);
 
-               mod_timer(&poll_spurious_irq_timer, jiffies + POLL_SPURIOUS_IRQ_INTERVAL);
+               mod_timer(&poll_spurious_irq_timer,
+                         jiffies + POLL_SPURIOUS_IRQ_INTERVAL);
        }
        desc->irqs_unhandled = 0;
 }