static int stu300_await_event(struct stu300_dev *dev,
enum stu300_event mr_event)
{
int ret;
if (unlikely(irqs_disabled())) {
dev_err(&dev->pdev->dev, "irqs are disabled on this "
"system!\n");
return -EIO;
}
spin_lock_irq(&dev->cmd_issue_lock);
dev->cmd_err = STU300_ERROR_NONE;
dev->cmd_event = mr_event;
init_completion(&dev->cmd_complete);
stu300_irq_enable(dev);
spin_unlock_irq(&dev->cmd_issue_lock);
ret = wait_for_completion_interruptible_timeout(&dev->cmd_complete,
STU300_TIMEOUT);
if (ret < 0) {
dev_err(&dev->pdev->dev,
"wait_for_completion_interruptible_timeout()"
"returned %d waiting for event %04x\n", ret, mr_event);
return ret;
}
if (ret == 0) {
if (mr_event != STU300_EVENT_6) {
dev_err(&dev->pdev->dev, "controller "
"timed out waiting for event %d, reinit "
"hardware\n", mr_event);
(void) stu300_init_hw(dev);
}
return -ETIMEDOUT;
}
if (dev->cmd_err != STU300_ERROR_NONE) {
if (mr_event != STU300_EVENT_6) {
dev_err(&dev->pdev->dev, "controller "
"error (await_event) %d waiting for event %d, "
"reinit hardware\n", dev->cmd_err, mr_event);
(void) stu300_init_hw(dev);
}
return -EIO;
}
return 0;
}
static int stu300_await_event(struct stu300_dev *dev,
enum stu300_event mr_event)
{
int ret;
if (unlikely(irqs_disabled())) {
/* TODO: implement polling for this case if need be. */
dev_err(&dev->pdev->dev, "irqs are disabled on this "
"system!\n");
return -EIO;
}
/* Is it already here? */
spin_lock_irq(&dev->cmd_issue_lock);
dev->cmd_err = STU300_ERROR_NONE;
dev->cmd_event = mr_event;
init_completion(&dev->cmd_complete);
/* Turn on the I2C interrupt for current operation */
stu300_irq_enable(dev);
/* Unlock the command block and wait for the event to occur */
spin_unlock_irq(&dev->cmd_issue_lock);
ret = wait_for_completion_interruptible_timeout(&dev->cmd_complete,
STU300_TIMEOUT);
if (ret < 0) {
dev_err(&dev->pdev->dev,
"wait_for_completion_interruptible_timeout()"
"returned %d waiting for event %04x\n", ret, mr_event);
return ret;
}
if (ret == 0) {
if (mr_event != STU300_EVENT_6) {
dev_err(&dev->pdev->dev, "controller "
"timed out waiting for event %d, reinit "
"hardware\n", mr_event);
(void) stu300_init_hw(dev);
}
return -ETIMEDOUT;
}
if (dev->cmd_err != STU300_ERROR_NONE) {
if (mr_event != STU300_EVENT_6) {
dev_err(&dev->pdev->dev, "controller "
"error (await_event) %d waiting for event %d, "
"reinit hardware\n", dev->cmd_err, mr_event);
(void) stu300_init_hw(dev);
}
return -EIO;
}
return 0;
}
