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Subject[PATCH 15/24] Staging: ipack/bridges/tpci200: move tpci200_free_irq() and tpci200_request_irq()
Date
From: Jens Taprogge <jens.taprogge@taprogge.org>

Now, all the interrupt related functions are next to each other.

Signed-off-by: Jens Taprogge <jens.taprogge@taprogge.org>
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
---
drivers/staging/ipack/bridges/tpci200.c | 154 +++++++++++++++----------------
1 file changed, 77 insertions(+), 77 deletions(-)

diff --git a/drivers/staging/ipack/bridges/tpci200.c b/drivers/staging/ipack/bridges/tpci200.c
index c7ec342..b0d2205 100644
--- a/drivers/staging/ipack/bridges/tpci200.c
+++ b/drivers/staging/ipack/bridges/tpci200.c
@@ -165,6 +165,83 @@ static irqreturn_t tpci200_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}

+static int tpci200_free_irq(struct ipack_device *dev)
+{
+ struct slot_irq *slot_irq;
+ struct tpci200_board *tpci200;
+
+ tpci200 = check_slot(dev);
+ if (tpci200 == NULL)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&tpci200->mutex))
+ return -ERESTARTSYS;
+
+ if (tpci200->slots[dev->slot].irq == NULL) {
+ mutex_unlock(&tpci200->mutex);
+ return -EINVAL;
+ }
+
+ tpci200_disable_irq(tpci200, dev->slot);
+ slot_irq = tpci200->slots[dev->slot].irq;
+ /* uninstall handler */
+ RCU_INIT_POINTER(tpci200->slots[dev->slot].irq, NULL);
+ synchronize_rcu();
+ kfree(slot_irq);
+ mutex_unlock(&tpci200->mutex);
+ return 0;
+}
+
+static int tpci200_request_irq(struct ipack_device *dev, int vector,
+ int (*handler)(void *), void *arg)
+{
+ int res = 0;
+ struct slot_irq *slot_irq;
+ struct tpci200_board *tpci200;
+
+ tpci200 = check_slot(dev);
+ if (tpci200 == NULL)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&tpci200->mutex))
+ return -ERESTARTSYS;
+
+ if (tpci200->slots[dev->slot].irq != NULL) {
+ dev_err(&dev->dev,
+ "Slot [%d:%d] IRQ already registered !\n", dev->bus_nr,
+ dev->slot);
+ res = -EINVAL;
+ goto out_unlock;
+ }
+
+ slot_irq = kzalloc(sizeof(struct slot_irq), GFP_KERNEL);
+ if (slot_irq == NULL) {
+ dev_err(&dev->dev,
+ "Slot [%d:%d] unable to allocate memory for IRQ !\n",
+ dev->bus_nr, dev->slot);
+ res = -ENOMEM;
+ goto out_unlock;
+ }
+
+ /*
+ * WARNING: Setup Interrupt Vector in the IndustryPack device
+ * before an IRQ request.
+ * Read the User Manual of your IndustryPack device to know
+ * where to write the vector in memory.
+ */
+ slot_irq->vector = vector;
+ slot_irq->handler = handler;
+ slot_irq->arg = arg;
+ slot_irq->holder = dev;
+
+ rcu_assign_pointer(tpci200->slots[dev->slot].irq, slot_irq);
+ tpci200_enable_irq(tpci200, dev->slot);
+
+out_unlock:
+ mutex_unlock(&tpci200->mutex);
+ return res;
+}
+
static int tpci200_register(struct tpci200_board *tpci200)
{
int i;
@@ -283,33 +360,6 @@ out_disable_pci:
return res;
}

-static int tpci200_free_irq(struct ipack_device *dev)
-{
- struct slot_irq *slot_irq;
- struct tpci200_board *tpci200;
-
- tpci200 = check_slot(dev);
- if (tpci200 == NULL)
- return -EINVAL;
-
- if (mutex_lock_interruptible(&tpci200->mutex))
- return -ERESTARTSYS;
-
- if (tpci200->slots[dev->slot].irq == NULL) {
- mutex_unlock(&tpci200->mutex);
- return -EINVAL;
- }
-
- tpci200_disable_irq(tpci200, dev->slot);
- slot_irq = tpci200->slots[dev->slot].irq;
- /* uninstall handler */
- RCU_INIT_POINTER(tpci200->slots[dev->slot].irq, NULL);
- synchronize_rcu();
- kfree(slot_irq);
- mutex_unlock(&tpci200->mutex);
- return 0;
-}
-
static int tpci200_slot_unmap_space(struct ipack_device *dev, int space)
{
struct ipack_addr_space *virt_addr_space;
@@ -448,56 +498,6 @@ out_unlock:
return res;
}

-static int tpci200_request_irq(struct ipack_device *dev, int vector,
- int (*handler)(void *), void *arg)
-{
- int res = 0;
- struct slot_irq *slot_irq;
- struct tpci200_board *tpci200;
-
- tpci200 = check_slot(dev);
- if (tpci200 == NULL)
- return -EINVAL;
-
- if (mutex_lock_interruptible(&tpci200->mutex))
- return -ERESTARTSYS;
-
- if (tpci200->slots[dev->slot].irq != NULL) {
- dev_err(&dev->dev,
- "Slot [%d:%d] IRQ already registered !\n", dev->bus_nr,
- dev->slot);
- res = -EINVAL;
- goto out_unlock;
- }
-
- slot_irq = kzalloc(sizeof(struct slot_irq), GFP_KERNEL);
- if (slot_irq == NULL) {
- dev_err(&dev->dev,
- "Slot [%d:%d] unable to allocate memory for IRQ !\n",
- dev->bus_nr, dev->slot);
- res = -ENOMEM;
- goto out_unlock;
- }
-
- /*
- * WARNING: Setup Interrupt Vector in the IndustryPack device
- * before an IRQ request.
- * Read the User Manual of your IndustryPack device to know
- * where to write the vector in memory.
- */
- slot_irq->vector = vector;
- slot_irq->handler = handler;
- slot_irq->arg = arg;
- slot_irq->holder = dev;
-
- rcu_assign_pointer(tpci200->slots[dev->slot].irq, slot_irq);
- tpci200_enable_irq(tpci200, dev->slot);
-
-out_unlock:
- mutex_unlock(&tpci200->mutex);
- return res;
-}
-
static int tpci200_get_clockrate(struct ipack_device *dev)
{
struct tpci200_board *tpci200 = check_slot(dev);
--
1.7.10.4


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