@@ -164,6 +164,9 @@ static void mei_me_hw_reset_release(struct mei_device *dev)
hcsr |= H_IG;
hcsr &= ~H_RST;
mei_hcsr_set(hw, hcsr);
+
+ /* complete this write before we set host ready on another CPU */
+ mmiowb();
}
/**
* mei_me_hw_reset - resets fw via mei csr register.
@@ -201,6 +204,7 @@ static int mei_me_hw_reset(struct mei_device *dev, bool intr_enable)
static void mei_me_host_set_ready(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
+ hw->host_hw_state = mei_hcsr_read(hw);
hw->host_hw_state |= H_IE | H_IG | H_RDY;
mei_hcsr_set(hw, hw->host_hw_state);
}
@@ -496,6 +500,7 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
/* check if we need to start the dev */
if (!mei_host_is_ready(dev)) {
if (mei_hw_is_ready(dev)) {
+ mei_me_hw_reset_release(dev);
dev_dbg(&dev->pdev->dev, "we need to start the dev.\n");
dev->recvd_hw_ready = true;
@@ -504,8 +509,7 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
mutex_unlock(&dev->device_lock);
return IRQ_HANDLED;
} else {
- dev_dbg(&dev->pdev->dev, "Reset Completed.\n");
- mei_me_hw_reset_release(dev);
+ dev_dbg(&dev->pdev->dev, "Spurious Interrupt\n");
mutex_unlock(&dev->device_lock);
return IRQ_HANDLED;
}