diff options
Diffstat (limited to 'drivers/media/video/em28xx/em28xx-dvb.c')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-dvb.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/media/video/em28xx/em28xx-dvb.c b/drivers/media/video/em28xx/em28xx-dvb.c index b606fc7f842..62b558ddc02 100644 --- a/drivers/media/video/em28xx/em28xx-dvb.c +++ b/drivers/media/video/em28xx/em28xx-dvb.c @@ -842,6 +842,13 @@ out_free: goto ret; } +static inline void prevent_sleep(struct dvb_frontend_ops *ops) +{ + ops->set_voltage = NULL; + ops->sleep = NULL; + ops->tuner_ops.sleep = NULL; +} + static int em28xx_dvb_fini(struct em28xx *dev) { if (!dev->board.has_dvb) { @@ -850,8 +857,19 @@ static int em28xx_dvb_fini(struct em28xx *dev) } if (dev->dvb) { - em28xx_unregister_dvb(dev->dvb); - kfree(dev->dvb); + struct em28xx_dvb *dvb = dev->dvb; + + if (dev->state & DEV_DISCONNECTED) { + /* We cannot tell the device to sleep + * once it has been unplugged. */ + if (dvb->fe[0]) + prevent_sleep(&dvb->fe[0]->ops); + if (dvb->fe[1]) + prevent_sleep(&dvb->fe[1]->ops); + } + + em28xx_unregister_dvb(dvb); + kfree(dvb); dev->dvb = NULL; } |