diff options
Diffstat (limited to 'drivers/media/radio/radio-si4713.c')
| -rw-r--r-- | drivers/media/radio/radio-si4713.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/radio/radio-si4713.c b/drivers/media/radio/radio-si4713.c index f0f0a90c69ed..633c545438f7 100644 --- a/drivers/media/radio/radio-si4713.c +++ b/drivers/media/radio/radio-si4713.c @@ -49,6 +49,7 @@ MODULE_ALIAS("platform:radio-si4713"); struct radio_si4713_device { struct v4l2_device v4l2_dev; struct video_device radio_dev; + struct mutex lock; }; /* radio_si4713_fops - file operations interface */ @@ -247,6 +248,7 @@ static int radio_si4713_pdriver_probe(struct platform_device *pdev) rval = -ENOMEM; goto exit; } + mutex_init(&rsdev->lock); rval = v4l2_device_register(&pdev->dev, &rsdev->v4l2_dev); if (rval) { @@ -272,6 +274,8 @@ static int radio_si4713_pdriver_probe(struct platform_device *pdev) rsdev->radio_dev = radio_si4713_vdev_template; rsdev->radio_dev.v4l2_dev = &rsdev->v4l2_dev; + /* Serialize all access to the si4713 */ + rsdev->radio_dev.lock = &rsdev->lock; video_set_drvdata(&rsdev->radio_dev, rsdev); if (video_register_device(&rsdev->radio_dev, VFL_TYPE_RADIO, radio_nr)) { dev_err(&pdev->dev, "Could not register video device.\n"); |