diff options
Diffstat (limited to 'drivers/misc/mei/hw-me.c')
| -rw-r--r-- | drivers/misc/mei/hw-me.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 7e769c5..7145929 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -507,7 +507,16 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) while (slots > 0) { dev_dbg(&dev->pdev->dev, "slots to read = %08x\n", slots); rets = mei_irq_read_handler(dev, &complete_list, &slots); + /* There is a race between ME write and interrupt delivery: + * Not all data is always available immediately after the + * interrupt, so try to read again on the next interrupt. + */ + if (rets == -ENODATA) + break; + if (rets && dev->dev_state != MEI_DEV_RESETTING) { + dev_err(&dev->pdev->dev, "mei_irq_read_handler ret = %d.\n", + rets); schedule_work(&dev->reset_work); goto end; } |
