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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
| commit | 8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch) | |
| tree | e9891aa6c295060d065adffd610c4f49ecf884f3 /drivers/staging/comedi/range.c | |
| parent | a71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff) | |
Linux-libre 4.3.2-gnu
Diffstat (limited to 'drivers/staging/comedi/range.c')
| -rw-r--r-- | drivers/staging/comedi/range.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/staging/comedi/range.c b/drivers/staging/comedi/range.c index 6a393b24b..ce3a58a7a 100644 --- a/drivers/staging/comedi/range.c +++ b/drivers/staging/comedi/range.c @@ -102,7 +102,18 @@ int do_rangeinfo_ioctl(struct comedi_device *dev, * @s: comedi_subdevice struct * @n: number of elements in the chanlist * @chanlist: the chanlist to validate -*/ + * + * Each element consists of a channel number, a range index, an analog + * reference type and some flags, all packed into an unsigned int. + * + * This checks that the channel number and range index are supported by + * the comedi subdevice. It does not check whether the analog reference + * type and the flags are supported. Drivers that care should check those + * themselves. + * + * Return: %0 if all @chanlist elements are valid (success), + * %-EINVAL if one or more elements are invalid. + */ int comedi_check_chanlist(struct comedi_subdevice *s, int n, unsigned int *chanlist) { |