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

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/iio/Documentation/iio_utils.h b/drivers/staging/iio/Documentation/iio_utils.h
index 74d312473378492b92f0c22da1882dfea6765475..d24006aedd5a2ddd6aae79541e9b6a462acd4639 100644 (file)
--- a/drivers/staging/iio/Documentation/iio_utils.h
+++ b/drivers/staging/iio/Documentation/iio_utils.h
@@ -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