genirq: Provide compat handling for chip->startup()

Wrap the old chip function startup() until the migration is complete and
the old chip functions are removed.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20100927121842.635152961@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c
index 95806a4..7a46825 100644 (file)
--- a/kernel/irq/autoprobe.c
+++ b/kernel/irq/autoprobe.c
@@ -59,7 +59,7 @@ unsigned long probe_irq_on(void)
                         */
                        if (desc->irq_data.chip->set_type)
                                desc->irq_data.chip->set_type(i, IRQ_TYPE_PROBE);
-                       desc->irq_data.chip->startup(i);
+                       desc->irq_data.chip->irq_startup(&desc->irq_data);
                }
                raw_spin_unlock_irq(&desc->lock);
        }
@@ -76,7 +76,7 @@ unsigned long probe_irq_on(void)
                raw_spin_lock_irq(&desc->lock);
                if (!desc->action && !(desc->status & IRQ_NOPROBE)) {
                        desc->status |= IRQ_AUTODETECT | IRQ_WAITING;
-                       if (desc->irq_data.chip->startup(i))
+                       if (desc->irq_data.chip->irq_startup(&desc->irq_data))
                                desc->status |= IRQ_PENDING;
                }
                raw_spin_unlock_irq(&desc->lock);

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index b8a47f0..cce85f0 100644 (file)
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -305,11 +305,11 @@ static void default_disable(struct irq_data *data)
 /*
  * default startup function
  */
-static unsigned int default_startup(unsigned int irq)
+static unsigned int default_startup(struct irq_data *data)
 {
-       struct irq_desc *desc = irq_to_desc(irq);
+       struct irq_desc *desc = irq_data_to_desc(data);
 
-       desc->irq_data.chip->irq_enable(&desc->irq_data);
+       desc->irq_data.chip->irq_enable(data);
        return 0;
 }
 
@@ -365,6 +365,11 @@ static void compat_irq_shutdown(struct irq_data *data)
        data->chip->shutdown(data->irq);
 }
 
+static unsigned int compat_irq_startup(struct irq_data *data)
+{
+       return data->chip->startup(data->irq);
+}
+
 static void compat_bus_lock(struct irq_data *data)
 {
        data->chip->bus_lock(data->irq);
@@ -390,6 +395,8 @@ void irq_chip_set_defaults(struct irq_chip *chip)
                chip->irq_disable = compat_irq_disable;
        if (chip->shutdown)
                chip->irq_shutdown = compat_irq_shutdown;
+       if (chip->startup)
+               chip->irq_startup = compat_irq_startup;
 
        /*
         * The real defaults
@@ -398,8 +405,8 @@ void irq_chip_set_defaults(struct irq_chip *chip)
                chip->irq_enable = default_enable;
        if (!chip->irq_disable)
                chip->irq_disable = default_disable;
-       if (!chip->startup)
-               chip->startup = default_startup;
+       if (!chip->irq_startup)
+               chip->irq_startup = default_startup;
        /*
         * We use chip->irq_disable, when the user provided its own. When
         * we have default_disable set for chip->irq_disable, then we need
@@ -786,7 +793,7 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
                desc->status &= ~IRQ_DISABLED;
                desc->status |= IRQ_NOREQUEST | IRQ_NOPROBE;
                desc->depth = 0;
-               desc->irq_data.chip->startup(irq);
+               desc->irq_data.chip->irq_startup(&desc->irq_data);
        }
        raw_spin_unlock_irqrestore(&desc->lock, flags);
        chip_bus_sync_unlock(desc);

diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 60e25c4..8d0697f 100644 (file)
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -311,11 +311,6 @@ static unsigned int noop_ret(struct irq_data *data)
 
 static void compat_noop(unsigned int irq) { }
 
-static unsigned int compat_noop_ret(unsigned int irq)
-{
-       return 0;
-}
-
 /*
  * Generic no controller implementation
  */
@@ -326,7 +321,6 @@ struct irq_chip no_irq_chip = {
        .irq_enable     = noop,
        .irq_disable    = noop,
        .irq_ack        = ack_bad,
-       .startup        = compat_noop_ret,
        .end            = compat_noop,
 };
 
@@ -343,7 +337,6 @@ struct irq_chip dummy_irq_chip = {
        .irq_ack        = noop,
        .irq_mask       = noop,
        .irq_unmask     = noop,
-       .startup        = compat_noop_ret,
        .end            = compat_noop,
 };
 

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index f3f36f6..31d7678 100644 (file)
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -779,7 +779,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
                if (!(desc->status & IRQ_NOAUTOEN)) {
                        desc->depth = 0;
                        desc->status &= ~IRQ_DISABLED;
-                       desc->irq_data.chip->startup(irq);
+                       desc->irq_data.chip->irq_startup(&desc->irq_data);
                } else
                        /* Undo nested disables: */
                        desc->depth = 1;