diff options
| -rw-r--r-- | drivers/media/radio/radio-mr800.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/media/radio/radio-mr800.c b/drivers/media/radio/radio-mr800.c index 4064109c420..44efa68d9f8 100644 --- a/drivers/media/radio/radio-mr800.c +++ b/drivers/media/radio/radio-mr800.c @@ -132,6 +132,7 @@ static int usb_amradio_resume(struct usb_interface *intf); struct amradio_device { /* reference to USB and video device */ struct usb_device *usbdev; + struct usb_interface *intf; struct video_device videodev; struct v4l2_device v4l2_dev; @@ -163,7 +164,7 @@ static struct usb_driver usb_amradio_driver = { .resume = usb_amradio_resume, .reset_resume = usb_amradio_resume, .id_table = usb_amradio_device_table, - .supports_autosuspend = 0, + .supports_autosuspend = 1, }; /* switch on/off the radio. Send 8 bytes to device */ @@ -506,9 +507,15 @@ static int usb_amradio_open(struct file *file) } file->private_data = radio; + retval = usb_autopm_get_interface(radio->intf); + if (retval) + goto unlock; - if (unlikely(!radio->initialized)) + if (unlikely(!radio->initialized)) { retval = usb_amradio_init(radio); + if (retval) + usb_autopm_put_interface(radio->intf); + } unlock: mutex_unlock(&radio->lock); @@ -525,6 +532,8 @@ static int usb_amradio_close(struct file *file) if (!radio->usbdev) retval = -EIO; + else + usb_autopm_put_interface(radio->intf); mutex_unlock(&radio->lock); return retval; @@ -666,6 +675,7 @@ static int usb_amradio_probe(struct usb_interface *intf, radio->videodev.release = usb_amradio_video_device_release; radio->usbdev = interface_to_usbdev(intf); + radio->intf = intf; radio->curfreq = 95.16 * FREQ_MUL; mutex_init(&radio->lock); |