diff options
Diffstat (limited to 'drivers/media/video/pvrusb2/pvrusb2-ctrl.c')
| -rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-ctrl.c | 45 |
1 files changed, 27 insertions, 18 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-ctrl.c b/drivers/media/video/pvrusb2/pvrusb2-ctrl.c index c77de859cc8e..f569b00201dd 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-ctrl.c +++ b/drivers/media/video/pvrusb2/pvrusb2-ctrl.c @@ -26,6 +26,27 @@ #include <linux/mutex.h> +static int pvr2_ctrl_range_check(struct pvr2_ctrl *cptr,int val) +{ + if (cptr->info->check_value) { + if (!cptr->info->check_value(cptr,val)) return -ERANGE; + } else { + int lim; + lim = cptr->info->def.type_int.min_value; + if (cptr->info->get_min_value) { + cptr->info->get_min_value(cptr,&lim); + } + if (val < lim) return -ERANGE; + lim = cptr->info->def.type_int.max_value; + if (cptr->info->get_max_value) { + cptr->info->get_max_value(cptr,&lim); + } + if (val > lim) return -ERANGE; + } + return 0; +} + + /* Set the given control. */ int pvr2_ctrl_set_value(struct pvr2_ctrl *cptr,int val) { @@ -43,17 +64,8 @@ int pvr2_ctrl_set_mask_value(struct pvr2_ctrl *cptr,int mask,int val) if (cptr->info->type == pvr2_ctl_bitmask) { mask &= cptr->info->def.type_bitmask.valid_bits; } else if (cptr->info->type == pvr2_ctl_int) { - int lim; - lim = cptr->info->def.type_int.min_value; - if (cptr->info->get_min_value) { - cptr->info->get_min_value(cptr,&lim); - } - if (val < lim) break; - lim = cptr->info->def.type_int.max_value; - if (cptr->info->get_max_value) { - cptr->info->get_max_value(cptr,&lim); - } - if (val > lim) break; + ret = pvr2_ctrl_range_check(cptr,val); + if (ret < 0) break; } else if (cptr->info->type == pvr2_ctl_enum) { if (val >= cptr->info->def.type_enum.count) { break; @@ -498,16 +510,13 @@ int pvr2_ctrl_sym_to_value(struct pvr2_ctrl *cptr, LOCK_TAKE(cptr->hdw->big_lock); do { if (cptr->info->type == pvr2_ctl_int) { ret = parse_token(ptr,len,valptr,NULL,0); - if ((ret >= 0) && - ((*valptr < cptr->info->def.type_int.min_value) || - (*valptr > cptr->info->def.type_int.max_value))) { - ret = -ERANGE; + if (ret >= 0) { + ret = pvr2_ctrl_range_check(cptr,*valptr); } if (maskptr) *maskptr = ~0; } else if (cptr->info->type == pvr2_ctl_bool) { - ret = parse_token( - ptr,len,valptr,boolNames, - sizeof(boolNames)/sizeof(boolNames[0])); + ret = parse_token(ptr,len,valptr,boolNames, + ARRAY_SIZE(boolNames)); if (ret == 1) { *valptr = *valptr ? !0 : 0; } else if (ret == 0) { |