Commit d27da4da authored by Ian Abbott's avatar Ian Abbott Committed by Greg Kroah-Hartman
Browse files

staging: comedi: improve comedi_check_chanlist() documentation 



Signed-off-by: default avatarIan Abbott <abbotti@mev.co.uk>
Reviewed-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1a59adb2

drivers/staging/comedi/range.c

+12 −1
Original line number Diff line number Diff line
@@ -102,6 +102,17 @@ 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)