>From 5d01d49c78e2788dca8981af7369c799b650c706 Mon Sep 17 00:00:00 2001 From: David Ellingsworth Date: Sat, 12 Sep 2009 16:28:45 -0400 Subject: [PATCH 09/14] mr800: remove device initialization from open/close Device initialization should happen on an as needed basis. This change allows the device to continue operating even when there are no applications using it. This should allow simple command based applications to turn the device on and off without a persistent process. Signed-off-by: David Ellingsworth --- drivers/media/radio/radio-mr800.c | 35 ++--------------------------------- 1 files changed, 2 insertions(+), 33 deletions(-) diff --git a/drivers/media/radio/radio-mr800.c b/drivers/media/radio/radio-mr800.c index 87b58e3..df020e8 100644 --- a/drivers/media/radio/radio-mr800.c +++ b/drivers/media/radio/radio-mr800.c @@ -136,7 +136,6 @@ struct amradio_device { struct mutex lock; /* buffer locking */ int curfreq; int stereo; - int users; int muted; }; @@ -492,26 +491,6 @@ static int usb_amradio_open(struct file *file) } file->private_data = radio; - radio->users = 1; - radio->muted = 1; - - retval = amradio_set_mute(radio, AMRADIO_START); - if (retval < 0) { - amradio_dev_warn(&radio->videodev.dev, - "radio did not start up properly\n"); - radio->users = 0; - goto unlock; - } - - retval = amradio_set_stereo(radio, WANT_STEREO); - if (retval < 0) - amradio_dev_warn(&radio->videodev.dev, - "set stereo failed\n"); - - retval = amradio_setfreq(radio, radio->curfreq); - if (retval < 0) - amradio_dev_warn(&radio->videodev.dev, - "set frequency failed\n"); unlock: mutex_unlock(&radio->lock); @@ -526,19 +505,9 @@ static int usb_amradio_close(struct file *file) mutex_lock(&radio->lock); - if (!radio->usbdev) { + if (!radio->usbdev) retval = -EIO; - goto unlock; - } - - radio->users = 0; - retval = amradio_set_mute(radio, AMRADIO_STOP); - if (retval < 0) - amradio_dev_warn(&radio->videodev.dev, - "amradio_stop failed\n"); - -unlock: mutex_unlock(&radio->lock); return retval; } @@ -669,10 +638,10 @@ static int usb_amradio_probe(struct usb_interface *intf, radio->videodev.ioctl_ops = &usb_amradio_ioctl_ops; radio->videodev.release = usb_amradio_video_device_release; - radio->users = 0; radio->usbdev = interface_to_usbdev(intf); radio->curfreq = 95.16 * FREQ_MUL; radio->stereo = -1; + radio->muted = 1; mutex_init(&radio->lock); -- 1.6.3.3