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2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da 
 kernel/tools/iio/iio_utils.c
....@@ -1,10 +1,7 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /* IIO - useful set of util functionality
23  *
34  * Copyright (c) 2008 Jonathan Cameron
4
- *
5
- * This program is free software; you can redistribute it and/or modify it
6
- * under the terms of the GNU General Public License version 2 as published by
7
- * the Free Software Foundation.
85  */
96 #include <string.h>
107 #include <stdlib.h>
....@@ -265,6 +262,7 @@
265262 			if (fscanf(sysfsfp, "%f", output) != 1)
266263 				ret = errno ? -errno : -ENODATA;
267264 
265
+			fclose(sysfsfp);
268266 			break;
269267 		}
270268 error_free_filename:
....@@ -345,9 +343,9 @@
345343 			}
346344 
347345 			sysfsfp = fopen(filename, "r");
346
+			free(filename);
348347 			if (!sysfsfp) {
349348 				ret = -errno;
350
-				free(filename);
351349 				goto error_close_dir;
352350 			}
353351 
....@@ -357,7 +355,6 @@
357355 				if (fclose(sysfsfp))
358356 					perror("build_channel_array(): Failed to close file");
359357 
360
-				free(filename);
361358 				goto error_close_dir;
362359 			}
363360 			if (ret == 1)
....@@ -365,11 +362,9 @@
365362 
366363 			if (fclose(sysfsfp)) {
367364 				ret = -errno;
368
-				free(filename);
369365 				goto error_close_dir;
370366 			}
371367 
372
-			free(filename);
373368 		}
374369 
375370 	*ci_array = malloc(sizeof(**ci_array) * (*counter));
....@@ -395,9 +390,9 @@
395390 			}
396391 
397392 			sysfsfp = fopen(filename, "r");
393
+			free(filename);
398394 			if (!sysfsfp) {
399395 				ret = -errno;
400
-				free(filename);
401396 				count--;
402397 				goto error_cleanup_array;
403398 			}
....@@ -405,20 +400,17 @@
405400 			errno = 0;
406401 			if (fscanf(sysfsfp, "%i", &current_enabled) != 1) {
407402 				ret = errno ? -errno : -ENODATA;
408
-				free(filename);
409403 				count--;
410404 				goto error_cleanup_array;
411405 			}
412406 
413407 			if (fclose(sysfsfp)) {
414408 				ret = -errno;
415
-				free(filename);
416409 				count--;
417410 				goto error_cleanup_array;
418411 			}
419412 
420413 			if (!current_enabled) {
421
-				free(filename);
422414 				count--;
423415 				continue;
424416 			}
....@@ -429,7 +421,6 @@
429421 						strlen(ent->d_name) -
430422 						strlen("_en"));
431423 			if (!current->name) {
432
-				free(filename);
433424 				ret = -ENOMEM;
434425 				count--;
435426 				goto error_cleanup_array;
....@@ -439,7 +430,6 @@
439430 			ret = iioutils_break_up_name(current->name,
440431 						     &current->generic_name);
441432 			if (ret) {
442
-				free(filename);
443433 				free(current->name);
444434 				count--;
445435 				goto error_cleanup_array;
....@@ -450,17 +440,16 @@
450440 				       scan_el_dir,
451441 				       current->name);
452442 			if (ret < 0) {
453
-				free(filename);
454443 				ret = -ENOMEM;
455444 				goto error_cleanup_array;
456445 			}
457446 
458447 			sysfsfp = fopen(filename, "r");
448
+			free(filename);
459449 			if (!sysfsfp) {
460450 				ret = -errno;
461
-				fprintf(stderr, "failed to open %s\n",
462
-					filename);
463
-				free(filename);
451
+				fprintf(stderr, "failed to open %s/%s_index\n",
452
+					scan_el_dir, current->name);
464453 				goto error_cleanup_array;
465454 			}
466455 
....@@ -470,17 +459,14 @@
470459 				if (fclose(sysfsfp))
471460 					perror("build_channel_array(): Failed to close file");
472461 
473
-				free(filename);
474462 				goto error_cleanup_array;
475463 			}
476464 
477465 			if (fclose(sysfsfp)) {
478466 				ret = -errno;
479
-				free(filename);
480467 				goto error_cleanup_array;
481468 			}
482469 
483
-			free(filename);
484470 			/* Find the scale */
485471 			ret = iioutils_get_param_float(&current->scale,
486472 						       "scale",
....@@ -546,6 +532,10 @@
546532 {
547533 	int count = 0;
548534 
535
+	/* It takes a digit to represent zero */
536
+	if (!num)
537
+		return 1;
538
+
549539 	while (num != 0) {
550540 		num /= 10;
551541 		count++;