diff options
| -rw-r--r-- | drivers/hid/uhid.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c index 05ef4b05a63e..b1a477f8260c 100644 --- a/drivers/hid/uhid.c +++ b/drivers/hid/uhid.c @@ -117,6 +117,13 @@ static ssize_t uhid_char_write(struct file *file, const char __user *buffer, static unsigned int uhid_char_poll(struct file *file, poll_table *wait) { + struct uhid_device *uhid = file->private_data; + + poll_wait(file, &uhid->waitq, wait); + + if (uhid->head != uhid->tail) + return POLLIN | POLLRDNORM; + return 0; } |