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authorThomas Gleixner <tglx@linutronix.de>2011-03-25 11:12:31 +0000
committerSamuel Ortiz <sameo@linux.intel.com>2011-03-27 00:09:48 +0100
commitd740f4523bb4aea24bece704c726c69094e20d00 (patch)
treeb26bfc2a92c53cf6cf115bf9bf99bc7a51d11983 /drivers
parent9d8fd10aa5843e018d456644fc1a58896d8eeaf5 (diff)
downloadlinux-d740f4523bb4aea24bece704c726c69094e20d00.tar.bz2
mfd: twl4030: Cleanup interrupt handling
irq_desc checking in a function which is called with that irq descriptor locked, is pointless. Equally pointless as the irq desc check in the interrupt service routine. The driver sets those lines up, so that cant go away magically. Remove the open coded handler magic and use the proper accessor. No need to fiddle with irq_desc in the type setting function. The original value is in irq_data and the core code stores the new setting when the return value is 0. This driver needs to be converted to threaded interrupts and buslock. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mfd/twl4030-irq.c46
1 files changed, 8 insertions, 38 deletions
diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
index 63a30e88908f..47e8de0f3366 100644
--- a/drivers/mfd/twl4030-irq.c
+++ b/drivers/mfd/twl4030-irq.c
@@ -320,24 +320,8 @@ static int twl4030_irq_thread(void *data)
for (module_irq = twl4030_irq_base;
pih_isr;
pih_isr >>= 1, module_irq++) {
- if (pih_isr & 0x1) {
- struct irq_desc *d = irq_to_desc(module_irq);
-
- if (!d) {
- pr_err("twl4030: Invalid SIH IRQ: %d\n",
- module_irq);
- return -EINVAL;
- }
-
- /* These can't be masked ... always warn
- * if we get any surprises.
- */
- if (d->status & IRQ_DISABLED)
- note_interrupt(module_irq, d,
- IRQ_NONE);
- else
- d->handle_irq(module_irq, d);
- }
+ if (pih_isr & 0x1)
+ generic_handle_irq(module_irq);
}
local_irq_enable();
@@ -560,24 +544,18 @@ static void twl4030_sih_do_edge(struct work_struct *work)
/* Modify only the bits we know must change */
while (edge_change) {
int i = fls(edge_change) - 1;
- struct irq_desc *d = irq_to_desc(i + agent->irq_base);
+ struct irq_data *idata = irq_get_irq_data(i + agent->irq_base);
int byte = 1 + (i >> 2);
int off = (i & 0x3) * 2;
-
- if (!d) {
- pr_err("twl4030: Invalid IRQ: %d\n",
- i + agent->irq_base);
- return;
- }
+ unsigned int type;
bytes[byte] &= ~(0x03 << off);
- raw_spin_lock_irq(&d->lock);
- if (d->status & IRQ_TYPE_EDGE_RISING)
+ type = irqd_get_trigger_type(idata);
+ if (type & IRQ_TYPE_EDGE_RISING)
bytes[byte] |= BIT(off + 1);
- if (d->status & IRQ_TYPE_EDGE_FALLING)
+ if (type & IRQ_TYPE_EDGE_FALLING)
bytes[byte] |= BIT(off + 0);
- raw_spin_unlock_irq(&d->lock);
edge_change &= ~BIT(i);
}
@@ -626,21 +604,13 @@ static void twl4030_sih_unmask(struct irq_data *data)
static int twl4030_sih_set_type(struct irq_data *data, unsigned trigger)
{
struct sih_agent *sih = irq_data_get_irq_chip_data(data);
- struct irq_desc *desc = irq_to_desc(data->irq);
unsigned long flags;
- if (!desc) {
- pr_err("twl4030: Invalid IRQ: %d\n", data->irq);
- return -EINVAL;
- }
-
if (trigger & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING))
return -EINVAL;
spin_lock_irqsave(&sih_agent_lock, flags);
- if ((desc->status & IRQ_TYPE_SENSE_MASK) != trigger) {
- desc->status &= ~IRQ_TYPE_SENSE_MASK;
- desc->status |= trigger;
+ if (irqd_get_trigger_type(data) != trigger) {
sih->edge_change |= BIT(data->irq - sih->irq_base);
queue_work(wq, &sih->edge_work);
}