static struct iic_ite gpi;
static wait_queue_head_t iic_wait;
static int iic_pending;
-static spinlock_t lock;
/* ----- local functions ---------------------------------------------- */
static void iic_ite_waitforpin(void) {
int timeout = 2;
- long flags;
/* If interrupts are enabled (which they are), then put the process to
* sleep. This process will be awakened by two events -- either the
* of time and return.
*/
if (gpi.iic_irq > 0) {
- spin_lock_irqsave(&lock, flags);
+ cli();
if (iic_pending == 0) {
- spin_unlock_irqrestore(&lock, flags);
- if (interruptible_sleep_on_timeout(&iic_wait, timeout*HZ)) {
- spin_lock_irqsave(&lock, flags);
- if (iic_pending == 1) {
- iic_pending = 0;
- }
- spin_unlock_irqrestore(&lock, flags);
- }
- } else {
+ interruptible_sleep_on_timeout(&iic_wait, timeout*HZ );
+ } else
iic_pending = 0;
- spin_unlock_irqrestore(&lock, flags);
- }
+ sti();
} else {
udelay(100);
}
}
-static irqreturn_t iic_ite_handler(int this_irq, void *dev_id,
- struct pt_regs *regs)
+static void iic_ite_handler(int this_irq, void *dev_id, struct pt_regs *regs)
{
- spin_lock(&lock);
- iic_pending = 1;
- spin_unlock(&lock);
-
- wake_up_interruptible(&iic_wait);
+
+ iic_pending = 1;
- return IRQ_HANDLED;
+ wake_up_interruptible(&iic_wait);
}
iic_ite_data.data = (void *)piic;
init_waitqueue_head(&iic_wait);
- spin_lock_init(&lock);
if (iic_hw_resrc_init() == 0) {
if (i2c_iic_add_bus(&iic_ite_ops) < 0)
return -ENODEV;