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path: root/drivers/misc/mei/amthif.c
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Diffstat (limited to 'drivers/misc/mei/amthif.c')
-rw-r--r--drivers/misc/mei/amthif.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
index 749452f8e2f6..d0fdc134068a 100644
--- a/drivers/misc/mei/amthif.c
+++ b/drivers/misc/mei/amthif.c
@@ -418,15 +418,23 @@ unsigned int mei_amthif_poll(struct mei_device *dev,
struct file *file, poll_table *wait)
{
unsigned int mask = 0;
- mutex_unlock(&dev->device_lock);
+
poll_wait(file, &dev->iamthif_cl.wait, wait);
+
mutex_lock(&dev->device_lock);
- if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE &&
- dev->iamthif_file_object == file) {
+ if (!mei_cl_is_connected(&dev->iamthif_cl)) {
+
+ mask = POLLERR;
+
+ } else if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE &&
+ dev->iamthif_file_object == file) {
+
mask |= (POLLIN | POLLRDNORM);
dev_dbg(&dev->pdev->dev, "run next amthif cb\n");
mei_amthif_run_next_cmd(dev);
}
+ mutex_unlock(&dev->device_lock);
+
return mask;
}