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Subject[patch 05/19] genirq; Provide compat handling for chip->mask()
Wrap the old chip function mask() until the migration is complete and
the old chip functions are removed.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
kernel/irq/chip.c | 22 +++++++++++++++-------
kernel/irq/migration.c | 2 +-
2 files changed, 16 insertions(+), 8 deletions(-)
Index: linux-2.6-tip/kernel/irq/chip.c
===================================================================
--- linux-2.6-tip.orig/kernel/irq/chip.c
+++ linux-2.6-tip/kernel/irq/chip.c
@@ -323,11 +323,16 @@ static void default_shutdown(unsigned in
{
struct irq_desc *desc = irq_to_desc(irq);

- desc->chip->mask(irq);
+ desc->chip->irq_mask(&desc->irq_data);
desc->status |= IRQ_MASKED;
}

/* Temporary migration helpers */
+static void compat_irq_mask(struct irq_data *data)
+{
+ irq_data_to_desc(data)->chip->mask(data->irq);
+}
+
static void compat_bus_lock(struct irq_data *data)
{
irq_data_to_desc(data)->chip->bus_lock(data->irq);
@@ -365,6 +370,9 @@ void irq_chip_set_defaults(struct irq_ch
chip->irq_bus_lock = compat_bus_lock;
if (chip->bus_sync_unlock)
chip->irq_bus_sync_unlock = compat_bus_sync_unlock;
+
+ if (chip->mask)
+ chip->irq_mask = compat_irq_mask;
}

static inline void mask_ack_irq(struct irq_desc *desc, int irq)
@@ -372,17 +380,17 @@ static inline void mask_ack_irq(struct i
if (desc->chip->mask_ack)
desc->chip->mask_ack(irq);
else {
- desc->chip->mask(irq);
+ desc->chip->irq_mask(&desc->irq_data);
if (desc->chip->ack)
desc->chip->ack(irq);
}
desc->status |= IRQ_MASKED;
}

-static inline void mask_irq(struct irq_desc *desc, int irq)
+static inline void mask_irq(struct irq_desc *desc)
{
- if (desc->chip->mask) {
- desc->chip->mask(irq);
+ if (desc->chip->irq_mask) {
+ desc->chip->irq_mask(&desc->irq_data);
desc->status |= IRQ_MASKED;
}
}
@@ -556,7 +564,7 @@ handle_fasteoi_irq(unsigned int irq, str
action = desc->action;
if (unlikely(!action || (desc->status & IRQ_DISABLED))) {
desc->status |= IRQ_PENDING;
- mask_irq(desc, irq);
+ mask_irq(desc);
goto out;
}

@@ -624,7 +632,7 @@ handle_edge_irq(unsigned int irq, struct
irqreturn_t action_ret;

if (unlikely(!action)) {
- mask_irq(desc, irq);
+ mask_irq(desc);
goto out_unlock;
}

Index: linux-2.6-tip/kernel/irq/migration.c
===================================================================
--- linux-2.6-tip.orig/kernel/irq/migration.c
+++ linux-2.6-tip/kernel/irq/migration.c
@@ -61,7 +61,7 @@ void move_native_irq(int irq)
if (unlikely(desc->status & IRQ_DISABLED))
return;

- desc->chip->mask(irq);
+ desc->chip->irq_mask(&desc->irq_data);
move_masked_irq(irq);
desc->chip->unmask(irq);
}



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