Commit d89ce0d9 authored by Oliver Neukum's avatar Oliver Neukum Committed by Mauro Carvalho Chehab

V4L/DVB (13402): radio-mr800 - autosuspend for radio-mr800 driver

Patch adds autosuspend support for mr800 radio driver.
Signed-off-by: default avatarOliver Neukum <oliver@neukum.org>
Acked-by: default avatarAlexey Klimov <klimov.linux@gmail.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 87918334
......@@ -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);
......
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