diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/radio/radio-mr800.c | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/drivers/media/radio/radio-mr800.c b/drivers/media/radio/radio-mr800.c index 624e98b575c..6ffb7271762 100644 --- a/drivers/media/radio/radio-mr800.c +++ b/drivers/media/radio/radio-mr800.c @@ -375,13 +375,15 @@ static int vidioc_s_frequency(struct file *file, void *priv, struct v4l2_frequency *f) { struct amradio_device *radio = video_get_drvdata(video_devdata(file)); + int retval; /* safety check */ if (radio->removed) return -EIO; radio->curfreq = f->frequency; - if (amradio_setfreq(radio, radio->curfreq) < 0) + retval = amradio_setfreq(radio, radio->curfreq); + if (retval < 0) amradio_dev_warn(&radio->videodev->dev, "set frequency failed\n"); return 0; @@ -440,6 +442,7 @@ static int vidioc_s_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) { struct amradio_device *radio = video_get_drvdata(video_devdata(file)); + int retval; /* safety check */ if (radio->removed) @@ -448,13 +451,15 @@ static int vidioc_s_ctrl(struct file *file, void *priv, switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: if (ctrl->value) { - if (amradio_stop(radio) < 0) { + retval = amradio_stop(radio); + if (retval < 0) { amradio_dev_warn(&radio->videodev->dev, "amradio_stop failed\n"); return -1; } } else { - if (amradio_start(radio) < 0) { + retval = amradio_start(radio); + if (retval < 0) { amradio_dev_warn(&radio->videodev->dev, "amradio_start failed\n"); return -1; @@ -505,20 +510,24 @@ static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) static int usb_amradio_open(struct file *file) { struct amradio_device *radio = video_get_drvdata(video_devdata(file)); + int retval; lock_kernel(); radio->users = 1; radio->muted = 1; - if (amradio_start(radio) < 0) { + retval = amradio_start(radio); + if (retval < 0) { amradio_dev_warn(&radio->videodev->dev, "radio did not start up properly\n"); radio->users = 0; unlock_kernel(); return -EIO; } - if (amradio_setfreq(radio, radio->curfreq) < 0) + + retval = amradio_setfreq(radio, radio->curfreq); + if (retval < 0) amradio_dev_warn(&radio->videodev->dev, "set frequency failed\n"); @@ -551,8 +560,10 @@ static int usb_amradio_close(struct file *file) static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) { struct amradio_device *radio = usb_get_intfdata(intf); + int retval; - if (amradio_stop(radio) < 0) + retval = amradio_stop(radio); + if (retval < 0) dev_warn(&intf->dev, "amradio_stop failed\n"); dev_info(&intf->dev, "going into suspend..\n"); @@ -564,8 +575,10 @@ static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) static int usb_amradio_resume(struct usb_interface *intf) { struct amradio_device *radio = usb_get_intfdata(intf); + int retval; - if (amradio_start(radio) < 0) + retval = amradio_start(radio); + if (retval < 0) dev_warn(&intf->dev, "amradio_start failed\n"); dev_info(&intf->dev, "coming out of suspend..\n"); @@ -616,16 +629,16 @@ static struct video_device amradio_videodev_template = { .release = usb_amradio_device_release, }; -/* check if the device is present and register with v4l and -usb if it is */ +/* check if the device is present and register with v4l and usb if it is */ static int usb_amradio_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct amradio_device *radio; + int retval; radio = kmalloc(sizeof(struct amradio_device), GFP_KERNEL); - if (!(radio)) + if (!radio) return -ENOMEM; radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); @@ -654,7 +667,8 @@ static int usb_amradio_probe(struct usb_interface *intf, mutex_init(&radio->lock); video_set_drvdata(radio->videodev, radio); - if (video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr)) { + retval = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr); + if (retval < 0) { dev_warn(&intf->dev, "could not register video device\n"); video_device_release(radio->videodev); kfree(radio->buffer); |