diff options
Diffstat (limited to 'drivers/media/dvb-core/dvb_frontend.c')
| -rw-r--r-- | drivers/media/dvb-core/dvb_frontend.c | 28 |
1 files changed, 6 insertions, 22 deletions
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index be99c8dbc5f8..01511e5a5566 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -1969,17 +1969,9 @@ static int dvb_frontend_ioctl_properties(struct file *file, if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS)) return -EINVAL; - tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL); - if (!tvp) { - err = -ENOMEM; - goto out; - } - - if (copy_from_user(tvp, (void __user *)tvps->props, - tvps->num * sizeof(struct dtv_property))) { - err = -EFAULT; - goto out; - } + tvp = memdup_user(tvps->props, tvps->num * sizeof(*tvp)); + if (IS_ERR(tvp)) + return PTR_ERR(tvp); for (i = 0; i < tvps->num; i++) { err = dtv_property_process_set(fe, tvp + i, file); @@ -2002,17 +1994,9 @@ static int dvb_frontend_ioctl_properties(struct file *file, if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS)) return -EINVAL; - tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL); - if (!tvp) { - err = -ENOMEM; - goto out; - } - - if (copy_from_user(tvp, (void __user *)tvps->props, - tvps->num * sizeof(struct dtv_property))) { - err = -EFAULT; - goto out; - } + tvp = memdup_user(tvps->props, tvps->num * sizeof(*tvp)); + if (IS_ERR(tvp)) + return PTR_ERR(tvp); /* * Let's use our own copy of property cache, in order to |