diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/comedi_fc.h')
| -rw-r--r-- | drivers/staging/comedi/drivers/comedi_fc.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/comedi_fc.h b/drivers/staging/comedi/drivers/comedi_fc.h index 94481c637a0a..31afab79f39a 100644 --- a/drivers/staging/comedi/drivers/comedi_fc.h +++ b/drivers/staging/comedi/drivers/comedi_fc.h @@ -105,4 +105,48 @@ static inline int cfc_check_trigger_is_unique(unsigned int src) return 0; } +/** + * cfc_check_trigger_arg_is() - trivially validate a trigger argument + * @arg: pointer to the trigger arg to validate + * @val: the value the argument should be + */ +static inline int cfc_check_trigger_arg_is(unsigned int *arg, unsigned int val) +{ + if (*arg != val) { + *arg = val; + return -EINVAL; + } + return 0; +} + +/** + * cfc_check_trigger_arg_min() - trivially validate a trigger argument + * @arg: pointer to the trigger arg to validate + * @val: the minimum value the argument should be + */ +static inline int cfc_check_trigger_arg_min(unsigned int *arg, + unsigned int val) +{ + if (*arg < val) { + *arg = val; + return -EINVAL; + } + return 0; +} + +/** + * cfc_check_trigger_arg_max() - trivially validate a trigger argument + * @arg: pointer to the trigger arg to validate + * @val: the maximum value the argument should be + */ +static inline int cfc_check_trigger_arg_max(unsigned int *arg, + unsigned int val) +{ + if (*arg > val) { + *arg = val; + return -EINVAL; + } + return 0; +} + #endif /* _COMEDI_FC_H */ |