diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/dvb-core/dvb_frontend.c | 83 |
1 files changed, 51 insertions, 32 deletions
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index 730d9901a977..331085e4d426 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -1954,21 +1954,25 @@ static int dvb_frontend_ioctl_properties(struct file *file, struct dvb_frontend *fe = dvbdev->priv; struct dvb_frontend_private *fepriv = fe->frontend_priv; struct dtv_frontend_properties *c = &fe->dtv_property_cache; - int err = 0; - - struct dtv_properties *tvps = parg; - struct dtv_property *tvp = NULL; - int i; + int err, i; dev_dbg(fe->dvb->device, "%s:\n", __func__); - if (cmd == FE_SET_PROPERTY) { - dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num); - dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props); + switch(cmd) { + case FE_SET_PROPERTY: { + struct dtv_properties *tvps = parg; + struct dtv_property *tvp = NULL; + + dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", + __func__, tvps->num); + dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", + __func__, tvps->props); - /* Put an arbitrary limit on the number of messages that can - * be sent at once */ - if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS)) + /* + * Put an arbitrary limit on the number of messages that can + * be sent at once + */ + if (!tvps->num || (tvps->num > DTV_IOCTL_MAX_MSGS)) return -EINVAL; tvp = memdup_user(tvps->props, tvps->num * sizeof(*tvp)); @@ -1977,23 +1981,34 @@ static int dvb_frontend_ioctl_properties(struct file *file, for (i = 0; i < tvps->num; i++) { err = dtv_property_process_set(fe, tvp + i, file); - if (err < 0) - goto out; + if (err < 0) { + kfree(tvp); + return err; + } (tvp + i)->result = err; } if (c->state == DTV_TUNE) dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__); - } else if (cmd == FE_GET_PROPERTY) { + kfree(tvp); + break; + } + case FE_GET_PROPERTY: { + struct dtv_properties *tvps = parg; + struct dtv_property *tvp = NULL; struct dtv_frontend_properties getp = fe->dtv_property_cache; - dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num); - dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props); + dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", + __func__, tvps->num); + dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", + __func__, tvps->props); - /* Put an arbitrary limit on the number of messages that can - * be sent at once */ - if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS)) + /* + * Put an arbitrary limit on the number of messages that can + * be sent at once + */ + if (!tvps->num || (tvps->num > DTV_IOCTL_MAX_MSGS)) return -EINVAL; tvp = memdup_user(tvps->props, tvps->num * sizeof(*tvp)); @@ -2008,28 +2023,32 @@ static int dvb_frontend_ioctl_properties(struct file *file, */ if (fepriv->state != FESTATE_IDLE) { err = dtv_get_frontend(fe, &getp, NULL); - if (err < 0) - goto out; + if (err < 0) { + kfree(tvp); + return err; + } } for (i = 0; i < tvps->num; i++) { err = dtv_property_process_get(fe, &getp, tvp + i, file); - if (err < 0) - goto out; + if (err < 0) { + kfree(tvp); + return err; + } (tvp + i)->result = err; } if (copy_to_user((void __user *)tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) { - err = -EFAULT; - goto out; + kfree(tvp); + return -EFAULT; } - - } else - err = -EOPNOTSUPP; - -out: - kfree(tvp); - return err; + kfree(tvp); + break; + } + default: + return -ENOTSUPP; + } /* switch */ + return 0; } static int dtv_set_frontend(struct dvb_frontend *fe) |