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Diffstat (limited to 'tools/iio/lsiio.c')
-rw-r--r--tools/iio/lsiio.c55
1 files changed, 29 insertions, 26 deletions
diff --git a/tools/iio/lsiio.c b/tools/iio/lsiio.c
index b59ee1733..3d650e668 100644
--- a/tools/iio/lsiio.c
+++ b/tools/iio/lsiio.c
@@ -20,7 +20,6 @@
#include <sys/dir.h>
#include "iio_utils.h"
-
static enum verbosity {
VERBLEVEL_DEFAULT, /* 0 gives lspci behaviour */
VERBLEVEL_SENSORS, /* 1 lists sensors */
@@ -29,17 +28,16 @@ static enum verbosity {
const char *type_device = "iio:device";
const char *type_trigger = "trigger";
-
static inline int check_prefix(const char *str, const char *prefix)
{
return strlen(str) > strlen(prefix) &&
- strncmp(str, prefix, strlen(prefix)) == 0;
+ strncmp(str, prefix, strlen(prefix)) == 0;
}
static inline int check_postfix(const char *str, const char *postfix)
{
return strlen(str) > strlen(postfix) &&
- strcmp(str + strlen(str) - strlen(postfix), postfix) == 0;
+ strcmp(str + strlen(str) - strlen(postfix), postfix) == 0;
}
static int dump_channels(const char *dev_dir_name)
@@ -48,13 +46,13 @@ static int dump_channels(const char *dev_dir_name)
const struct dirent *ent;
dp = opendir(dev_dir_name);
- if (dp == NULL)
+ if (!dp)
return -errno;
- while (ent = readdir(dp), ent != NULL)
+
+ while (ent = readdir(dp), ent)
if (check_prefix(ent->d_name, "in_") &&
- check_postfix(ent->d_name, "_raw")) {
+ check_postfix(ent->d_name, "_raw"))
printf(" %-10s\n", ent->d_name);
- }
return (closedir(dp) == -1) ? -errno : 0;
}
@@ -63,20 +61,22 @@ static int dump_one_device(const char *dev_dir_name)
{
char name[IIO_MAX_NAME_LENGTH];
int dev_idx;
- int retval;
+ int ret;
- retval = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device),
- "%i", &dev_idx);
- if (retval != 1)
+ ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device), "%i",
+ &dev_idx);
+ if (ret != 1)
return -EINVAL;
- retval = read_sysfs_string("name", dev_dir_name, name);
- if (retval)
- return retval;
+
+ ret = read_sysfs_string("name", dev_dir_name, name);
+ if (ret < 0)
+ return ret;
printf("Device %03d: %s\n", dev_idx, name);
if (verblevel >= VERBLEVEL_SENSORS)
return dump_channels(dev_dir_name);
+
return 0;
}
@@ -84,17 +84,19 @@ static int dump_one_trigger(const char *dev_dir_name)
{
char name[IIO_MAX_NAME_LENGTH];
int dev_idx;
- int retval;
+ int ret;
- retval = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger),
- "%i", &dev_idx);
- if (retval != 1)
+ ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger),
+ "%i", &dev_idx);
+ if (ret != 1)
return -EINVAL;
- retval = read_sysfs_string("name", dev_dir_name, name);
- if (retval)
- return retval;
+
+ ret = read_sysfs_string("name", dev_dir_name, name);
+ if (ret < 0)
+ return ret;
printf("Trigger %03d: %s\n", dev_idx, name);
+
return 0;
}
@@ -105,12 +107,12 @@ static int dump_devices(void)
DIR *dp;
dp = opendir(iio_dir);
- if (dp == NULL) {
- printf("No industrial I/O devices available\n");
+ if (!dp) {
+ fprintf(stderr, "No industrial I/O devices available\n");
return -ENODEV;
}
- while (ent = readdir(dp), ent != NULL) {
+ while (ent = readdir(dp), ent) {
if (check_prefix(ent->d_name, type_device)) {
char *dev_dir_name;
@@ -132,7 +134,7 @@ static int dump_devices(void)
}
}
rewinddir(dp);
- while (ent = readdir(dp), ent != NULL) {
+ while (ent = readdir(dp), ent) {
if (check_prefix(ent->d_name, type_trigger)) {
char *dev_dir_name;
@@ -151,6 +153,7 @@ static int dump_devices(void)
free(dev_dir_name);
}
}
+
return (closedir(dp) == -1) ? -errno : 0;
error_close_dir: