diff options
Diffstat (limited to 'drivers/misc/mei/interrupt.c')
| -rw-r--r-- | drivers/misc/mei/interrupt.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index 4b59cb742dee..1b922e971d3e 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -536,7 +536,6 @@ EXPORT_SYMBOL_GPL(mei_irq_write_handler); * * @work: pointer to the work_struct structure * - * NOTE: This function is called by timer interrupt work */ void mei_timer(struct work_struct *work) { @@ -551,18 +550,24 @@ void mei_timer(struct work_struct *work) mutex_lock(&dev->device_lock); - if (dev->dev_state != MEI_DEV_ENABLED) { - if (dev->dev_state == MEI_DEV_INIT_CLIENTS) { - if (dev->init_clients_timer) { - if (--dev->init_clients_timer == 0) { - dev_err(&dev->pdev->dev, "reset: init clients timeout hbm_state = %d.\n", - dev->hbm_state); - mei_reset(dev, 1); - } + + /* Catch interrupt stalls during HBM init handshake */ + if (dev->dev_state == MEI_DEV_INIT_CLIENTS && + dev->hbm_state != MEI_HBM_IDLE) { + + if (dev->init_clients_timer) { + if (--dev->init_clients_timer == 0) { + dev_err(&dev->pdev->dev, "timer: init clients timeout hbm_state = %d.\n", + dev->hbm_state); + mei_reset(dev, 1); + goto out; } } - goto out; } + + if (dev->dev_state != MEI_DEV_ENABLED) + goto out; + /*** connect/disconnect timeouts ***/ list_for_each_entry_safe(cl_pos, cl_next, &dev->file_list, link) { if (cl_pos->timer_count) { |