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Commit e0dac318 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
Browse files

staging: comedi: comedi_fops: introduce comedi_is_subdevice_running() 



Introduce a helper function that checks the subdevice runflags to
see if the subdevice is running a command.

Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 74120719

drivers/staging/comedi/comedi_fops.c

+8 −0
Original line number Diff line number Diff line
@@ -375,6 +375,14 @@ unsigned comedi_get_subdevice_runflags(struct comedi_subdevice *s) 
}

EXPORT_SYMBOL(comedi_get_subdevice_runflags);



bool comedi_is_subdevice_running(struct comedi_subdevice *s)

{

	unsigned runflags = comedi_get_subdevice_runflags(s);



	return (runflags & SRF_RUNNING) ? true : false;

}

EXPORT_SYMBOL_GPL(comedi_is_subdevice_running);



/*

   This function restores a subdevice to an idle state.

 */

drivers/staging/comedi/comedidev.h

+2 −0
Original line number Diff line number Diff line
@@ -362,6 +362,8 @@ enum subdevice_runflags { 
	SRF_RUNNING = 0x08000000

};



bool comedi_is_subdevice_running(struct comedi_subdevice *s);



int comedi_check_chanlist(struct comedi_subdevice *s,

			  int n,

			  unsigned int *chanlist);