Commit eaf86ff9 authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Greg Kroah-Hartman
Browse files

staging:iio: Documentation, update iio_utils.h for the move to a bus 



Signed-off-by: default avatarJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 82020b0e

drivers/staging/iio/Documentation/iio_utils.h

+30 −1
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ inline char *find_ring_subelement(const char *directory, const char *subelement) 


char *find_type_by_name(const char *name, const char *type)

{

	const char *iio_dir = "/sys/class/iio/";

	const char *iio_dir = "/sys/bus/iio/devices/";

	const struct dirent *ent;

	int cnt, pos, pos2;
@@ -112,6 +112,35 @@ int write_sysfs_int(char *filename, char *basedir, int val) 
	return 0;

}



int write_sysfs_int_and_verify(char *filename, char *basedir, int val)

{

	int ret;

	FILE  *sysfsfp;

	char temp[100];

	int test;



	sprintf(temp, "%s%s", basedir, filename);

	sysfsfp = fopen(temp, "w");

	if (sysfsfp == NULL)

		return -1;

	fprintf(sysfsfp, "%d", val);

	fclose(sysfsfp);



	sysfsfp = fopen(temp, "r");

	if (sysfsfp == NULL)

		return -1;

	fscanf(sysfsfp, "%d", &test);

	if (test != val) {

		printf("Possible failure in int write %d to %s%s\n",

		       val,

		       basedir,

		       filename);

		return -1;

	}



	return 0;

}



/**

 * write_sysfs_string_and_verify() - string write, readback and verify

 * @filename: name of file to write to