1 files changed, 30 insertions, 21 deletions

diff --git a/tools/iio/iio_utils.c b/tools/iio/iio_utils.c
index e177f4022d40..c3f9e37333e7 100644
--- a/tools/iio/iio_utils.c
+++ b/tools/iio/iio_utils.c
@@ -140,7 +140,8 @@ int iioutils_get_type(unsigned *is_signed, unsigned *bytes, unsigned *bits_used,
                         sysfsfp = fopen(filename, "r");
                         if (!sysfsfp) {
                                 ret = -errno;
-                                printf("failed to open %s\n", filename);
+                                fprintf(stderr, "failed to open %s\n",
+                                        filename);
                                 goto error_free_filename;
                         }
 
@@ -152,11 +153,13 @@ int iioutils_get_type(unsigned *is_signed, unsigned *bytes, unsigned *bits_used,
                                      &padint, shift);
                         if (ret < 0) {
                                 ret = -errno;
-                                printf("failed to pass scan type description\n");
+                                fprintf(stderr,
+                                        "failed to pass scan type description\n");
                                 goto error_close_sysfsfp;
                         } else if (ret != 5) {
                                 ret = -EIO;
-                                printf("scan type description didn't match\n");
+                                fprintf(stderr,
+                                        "scan type description didn't match\n");
                                 goto error_close_sysfsfp;
                         }
 
@@ -170,7 +173,8 @@ int iioutils_get_type(unsigned *is_signed, unsigned *bytes, unsigned *bits_used,
                         *is_signed = (signchar == 's');
                         if (fclose(sysfsfp)) {
                                 ret = -errno;
-                                printf("Failed to close %s\n", filename);
+                                fprintf(stderr, "Failed to close %s\n",
+                                        filename);
                                 goto error_free_filename;
                         }
 
@@ -454,7 +458,8 @@ int build_channel_array(const char *device_dir,
                         sysfsfp = fopen(filename, "r");
                         if (!sysfsfp) {
                                 ret = -errno;
-                                printf("failed to open %s\n", filename);
+                                fprintf(stderr, "failed to open %s\n",
+                                        filename);
                                 free(filename);
                                 goto error_cleanup_array;
                         }
@@ -568,7 +573,7 @@ int find_type_by_name(const char *name, const char *type)
 
         dp = opendir(iio_dir);
         if (!dp) {
-                printf("No industrialio devices available\n");
+                fprintf(stderr, "No industrialio devices available\n");
                 return -ENODEV;
         }
 
@@ -581,11 +586,13 @@ int find_type_by_name(const char *name, const char *type)
                         ret = sscanf(ent->d_name + strlen(type), "%d", &number);
                         if (ret < 0) {
                                 ret = -errno;
-                                printf("failed to read element number\n");
+                                fprintf(stderr,
+                                        "failed to read element number\n");
                                 goto error_close_dir;
                         } else if (ret != 1) {
                                 ret = -EIO;
-                                printf("failed to match element number\n");
+                                fprintf(stderr,
+                                        "failed to match element number\n");
                                 goto error_close_dir;
                         }
 
@@ -664,7 +671,7 @@ static int _write_sysfs_int(const char *filename, const char *basedir, int val,
         sysfsfp = fopen(temp, "w");
         if (!sysfsfp) {
                 ret = -errno;
-                printf("failed to open %s\n", temp);
+                fprintf(stderr, "failed to open %s\n", temp);
                 goto error_free;
         }
 
@@ -685,7 +692,7 @@ static int _write_sysfs_int(const char *filename, const char *basedir, int val,
                 sysfsfp = fopen(temp, "r");
                 if (!sysfsfp) {
                         ret = -errno;
-                        printf("failed to open %s\n", temp);
+                        fprintf(stderr, "failed to open %s\n", temp);
                         goto error_free;
                 }
 
@@ -703,8 +710,9 @@ static int _write_sysfs_int(const char *filename, const char *basedir, int val,
                 }
 
                 if (test != val) {
-                        printf("Possible failure in int write %d to %s/%s\n",
-                               val, basedir, filename);
+                        fprintf(stderr,
+                                "Possible failure in int write %d to %s/%s\n",
+                                val, basedir, filename);
                         ret = -1;
                 }
         }
@@ -750,7 +758,7 @@ static int _write_sysfs_string(const char *filename, const char *basedir,
         char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
 
         if (!temp) {
-                printf("Memory allocation failed\n");
+                fprintf(stderr, "Memory allocation failed\n");
                 return -ENOMEM;
         }
 
@@ -761,7 +769,7 @@ static int _write_sysfs_string(const char *filename, const char *basedir,
         sysfsfp = fopen(temp, "w");
         if (!sysfsfp) {
                 ret = -errno;
-                printf("Could not open %s\n", temp);
+                fprintf(stderr, "Could not open %s\n", temp);
                 goto error_free;
         }
 
@@ -782,7 +790,7 @@ static int _write_sysfs_string(const char *filename, const char *basedir,
                 sysfsfp = fopen(temp, "r");
                 if (!sysfsfp) {
                         ret = -errno;
-                        printf("Could not open file to verify\n");
+                        fprintf(stderr, "Could not open file to verify\n");
                         goto error_free;
                 }
 
@@ -800,9 +808,10 @@ static int _write_sysfs_string(const char *filename, const char *basedir,
                 }
 
                 if (strcmp(temp, val) != 0) {
-                        printf("Possible failure in string write of %s "
-                               "Should be %s written to %s/%s\n", temp, val,
-                               basedir, filename);
+                        fprintf(stderr,
+                                "Possible failure in string write of %s "
+                                "Should be %s written to %s/%s\n", temp, val,
+                                basedir, filename);
                         ret = -1;
                 }
         }
@@ -856,7 +865,7 @@ int read_sysfs_posint(const char *filename, const char *basedir)
         char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
 
         if (!temp) {
-                printf("Memory allocation failed");
+                fprintf(stderr, "Memory allocation failed");
                 return -ENOMEM;
         }
 
@@ -903,7 +912,7 @@ int read_sysfs_float(const char *filename, const char *basedir, float *val)
         char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
 
         if (!temp) {
-                printf("Memory allocation failed");
+                fprintf(stderr, "Memory allocation failed");
                 return -ENOMEM;
         }
 
@@ -950,7 +959,7 @@ int read_sysfs_string(const char *filename, const char *basedir, char *str)
         char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
 
         if (!temp) {
-                printf("Memory allocation failed");
+                fprintf(stderr, "Memory allocation failed");
                 return -ENOMEM;
         }