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

Wrap the old chip function unmask() 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: <20100927121842.043608928@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>

4 files changed, 16 insertions, 9 deletions

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index c041270bfe50..dbdb59a42093 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -291,7 +291,7 @@ static void default_enable(unsigned int irq)
 {
         struct irq_desc *desc = irq_to_desc(irq);
 
-        desc->irq_data.chip->unmask(irq);
+        desc->irq_data.chip->irq_unmask(&desc->irq_data);
         desc->status &= ~IRQ_MASKED;
 }
 
@@ -330,6 +330,11 @@ static void compat_irq_mask(struct irq_data *data)
         data->chip->mask(data->irq);
 }
 
+static void compat_irq_unmask(struct irq_data *data)
+{
+        data->chip->unmask(data->irq);
+}
+
 static void compat_bus_lock(struct irq_data *data)
 {
         data->chip->bus_lock(data->irq);
@@ -370,6 +375,9 @@ void irq_chip_set_defaults(struct irq_chip *chip)
 
         if (chip->mask)
                 chip->irq_mask = compat_irq_mask;
+
+        if (chip->unmask)
+                chip->irq_unmask = compat_irq_unmask;
 }
 
 static inline void mask_ack_irq(struct irq_desc *desc, int irq)
@@ -392,10 +400,10 @@ static inline void mask_irq(struct irq_desc *desc)
         }
 }
 
-static inline void unmask_irq(struct irq_desc *desc, int irq)
+static inline void unmask_irq(struct irq_desc *desc)
 {
-        if (desc->irq_data.chip->unmask) {
-                desc->irq_data.chip->unmask(irq);
+        if (desc->irq_data.chip->irq_unmask) {
+                desc->irq_data.chip->irq_unmask(&desc->irq_data);
                 desc->status &= ~IRQ_MASKED;
         }
 }
@@ -524,7 +532,7 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc)
         desc->status &= ~IRQ_INPROGRESS;
 
         if (!(desc->status & (IRQ_DISABLED | IRQ_ONESHOT)))
-                unmask_irq(desc, irq);
+                unmask_irq(desc);
 out_unlock:
         raw_spin_unlock(&desc->lock);
 }
@@ -641,7 +649,7 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
                 if (unlikely((desc->status &
                                (IRQ_PENDING | IRQ_MASKED | IRQ_DISABLED)) ==
                               (IRQ_PENDING | IRQ_MASKED))) {
-                        unmask_irq(desc, irq);
+                        unmask_irq(desc);
                 }
 
                 desc->status &= ~IRQ_PENDING;
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 3b160ac236b0..f334c8c59dd2 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -360,7 +360,6 @@ struct irq_chip dummy_irq_chip = {
         .enable         = compat_noop,
         .disable        = compat_noop,
         .ack            = compat_noop,
-        .unmask         = compat_noop,
         .end            = compat_noop,
 };
 
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index dfb02ff7d2ef..b3986bce64ff 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -528,7 +528,7 @@ again:
 
         if (!(desc->status & IRQ_DISABLED) && (desc->status & IRQ_MASKED)) {
                 desc->status &= ~IRQ_MASKED;
-                desc->irq_data.chip->unmask(irq);
+                desc->irq_data.chip->irq_unmask(&desc->irq_data);
         }
         raw_spin_unlock_irq(&desc->lock);
         chip_bus_sync_unlock(desc);
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index b165ec26b757..7888e5d5575a 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -63,6 +63,6 @@ void move_native_irq(int irq)
 
         desc->irq_data.chip->irq_mask(&desc->irq_data);
         move_masked_irq(irq);
-        desc->irq_data.chip->unmask(irq);
+        desc->irq_data.chip->irq_unmask(&desc->irq_data);
 }