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path: root/drivers/misc/mei/hw-me.c
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Diffstat (limited to 'drivers/misc/mei/hw-me.c')
-rw-r--r--drivers/misc/mei/hw-me.c40
1 files changed, 17 insertions, 23 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index 3412adcdaeb..6f656c053b1 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -185,7 +185,7 @@ static int mei_me_hw_reset(struct mei_device *dev, bool intr_enable)
mei_me_reg_write(hw, H_CSR, hcsr);
- if (dev->dev_state == MEI_DEV_POWER_DOWN)
+ if (intr_enable == false)
mei_me_hw_reset_release(dev);
return 0;
@@ -469,7 +469,7 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
struct mei_device *dev = (struct mei_device *) dev_id;
struct mei_cl_cb complete_list;
s32 slots;
- int rets;
+ int rets = 0;
dev_dbg(&dev->pdev->dev, "function called after ISR to handle the interrupt processing.\n");
/* initialize our complete list */
@@ -482,15 +482,10 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
mei_clear_interrupts(dev);
/* check if ME wants a reset */
- if (!mei_hw_is_ready(dev) &&
- dev->dev_state != MEI_DEV_RESETTING &&
- dev->dev_state != MEI_DEV_INITIALIZING &&
- dev->dev_state != MEI_DEV_POWER_DOWN &&
- dev->dev_state != MEI_DEV_POWER_UP) {
- dev_dbg(&dev->pdev->dev, "FW not ready.\n");
- mei_reset(dev, 1);
- mutex_unlock(&dev->device_lock);
- return IRQ_HANDLED;
+ if (!mei_hw_is_ready(dev) && dev->dev_state != MEI_DEV_RESETTING) {
+ dev_warn(&dev->pdev->dev, "FW not ready: resetting.\n");
+ schedule_work(&dev->reset_work);
+ goto end;
}
/* check if we need to start the dev */
@@ -500,15 +495,12 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
dev->recvd_hw_ready = true;
wake_up_interruptible(&dev->wait_hw_ready);
-
- mutex_unlock(&dev->device_lock);
- return IRQ_HANDLED;
} else {
+
dev_dbg(&dev->pdev->dev, "Reset Completed.\n");
mei_me_hw_reset_release(dev);
- mutex_unlock(&dev->device_lock);
- return IRQ_HANDLED;
}
+ goto end;
}
/* check slots available for reading */
slots = mei_count_full_read_slots(dev);
@@ -516,21 +508,23 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
/* we have urgent data to send so break the read */
if (dev->wr_ext_msg.hdr.length)
break;
- dev_dbg(&dev->pdev->dev, "slots =%08x\n", slots);
- dev_dbg(&dev->pdev->dev, "call mei_irq_read_handler.\n");
+ dev_dbg(&dev->pdev->dev, "slots to read = %08x\n", slots);
rets = mei_irq_read_handler(dev, &complete_list, &slots);
- if (rets)
+ if (rets && dev->dev_state != MEI_DEV_RESETTING) {
+ schedule_work(&dev->reset_work);
goto end;
+ }
}
+
rets = mei_irq_write_handler(dev, &complete_list);
-end:
- dev_dbg(&dev->pdev->dev, "end of bottom half function.\n");
- dev->hbuf_is_ready = mei_hbuf_is_ready(dev);
- mutex_unlock(&dev->device_lock);
+ dev->hbuf_is_ready = mei_hbuf_is_ready(dev);
mei_irq_compl_handler(dev, &complete_list);
+end:
+ dev_dbg(&dev->pdev->dev, "interrupt thread end ret = %d\n", rets);
+ mutex_unlock(&dev->device_lock);
return IRQ_HANDLED;
}
static const struct mei_hw_ops mei_me_hw_ops = {