static int start_streaming(struct vb2_queue *vq, unsigned int count) { struct pwc_device *pdev = vb2_get_drv_priv(vq); int r; if (!pdev->udev) return -ENODEV; if (mutex_lock_interruptible(&pdev->v4l2_lock)) return -ERESTARTSYS; /* Turn on camera and set LEDS on */ pwc_camera_power(pdev, 1); pwc_set_leds(pdev, leds[0], leds[1]); r = pwc_isoc_init(pdev); if (r) { /* If we failed turn camera and LEDS back off */ pwc_set_leds(pdev, 0, 0); pwc_camera_power(pdev, 0); /* And cleanup any queued bufs!! */ pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_QUEUED); } mutex_unlock(&pdev->v4l2_lock); return r; }
/* The user yanked out the cable... */ static void usb_pwc_disconnect(struct usb_interface *intf) { struct v4l2_device *v = usb_get_intfdata(intf); struct pwc_device *pdev = container_of(v, struct pwc_device, v4l2_dev); mutex_lock(&pdev->vb_queue_lock); mutex_lock(&pdev->v4l2_lock); /* No need to keep the urbs around after disconnection */ if (pdev->vb_queue.streaming) pwc_isoc_cleanup(pdev); pdev->udev = NULL; pwc_cleanup_queued_bufs(pdev); v4l2_device_disconnect(&pdev->v4l2_dev); video_unregister_device(&pdev->vdev); mutex_unlock(&pdev->v4l2_lock); mutex_unlock(&pdev->vb_queue_lock); #ifdef CONFIG_USB_PWC_INPUT_EVDEV if (pdev->button_dev) input_unregister_device(pdev->button_dev); #endif v4l2_device_put(&pdev->v4l2_dev); }
static int start_streaming(struct vb2_queue *vq, unsigned int count) { struct pwc_device *pdev = vb2_get_drv_priv(vq); int r; mutex_lock(&pdev->udevlock); if (!pdev->udev) { r = -ENODEV; goto leave; } /* Turn on camera and set LEDS on */ pwc_camera_power(pdev, 1); pwc_set_leds(pdev, led_on, led_off); r = pwc_isoc_init(pdev); if (r) { /* If we failed turn camera and LEDS back off */ pwc_set_leds(pdev, 0, 0); pwc_camera_power(pdev, 0); /* And cleanup any queued bufs!! */ pwc_cleanup_queued_bufs(pdev); } leave: mutex_unlock(&pdev->udevlock); return r; }
static int stop_streaming(struct vb2_queue *vq) { struct pwc_device *pdev = vb2_get_drv_priv(vq); mutex_lock(&pdev->udevlock); if (pdev->udev) { pwc_set_leds(pdev, 0, 0); pwc_camera_power(pdev, 0); pwc_isoc_cleanup(pdev); } mutex_unlock(&pdev->udevlock); pwc_cleanup_queued_bufs(pdev); return 0; }
static void stop_streaming(struct vb2_queue *vq) { struct pwc_device *pdev = vb2_get_drv_priv(vq); mutex_lock(&pdev->v4l2_lock); if (pdev->udev) { pwc_set_leds(pdev, 0, 0); pwc_camera_power(pdev, 0); pwc_isoc_cleanup(pdev); } pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_ERROR); if (pdev->fill_buf) vb2_buffer_done(&pdev->fill_buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); mutex_unlock(&pdev->v4l2_lock); }
static int stop_streaming(struct vb2_queue *vq) { struct pwc_device *pdev = vb2_get_drv_priv(vq); if (mutex_lock_interruptible(&pdev->v4l2_lock)) return -ERESTARTSYS; if (pdev->udev) { pwc_set_leds(pdev, 0, 0); pwc_camera_power(pdev, 0); pwc_isoc_cleanup(pdev); } pwc_cleanup_queued_bufs(pdev); mutex_unlock(&pdev->v4l2_lock); return 0; }