tools: iio: Remove explicit NULL comparison

Remove explicit NULL comparison and write it in its simpler form as
recommended by checkpatch.pl.

Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

3 files changed, 35 insertions, 35 deletions

diff --git a/tools/iio/generic_buffer.c b/tools/iio/generic_buffer.c
index 0e737238ca74..9535c2dc25af 100644
--- a/tools/iio/generic_buffer.c
+++ b/tools/iio/generic_buffer.c
@@ -270,7 +270,7 @@ int main(int argc, char **argv)
                 }
         }
 
-        if (device_name == NULL) {
+        if (!device_name) {
                 printf("Device name not set\n");
                 print_usage();
                 return -1;
@@ -290,7 +290,7 @@ int main(int argc, char **argv)
                 return -ENOMEM;
 
         if (!notrigger) {
-                if (trigger_name == NULL) {
+                if (!trigger_name) {
                         /*
                          * Build the trigger name. If it is device associated
                          * its name is <device_name>_dev[n] where n matches
diff --git a/tools/iio/iio_utils.c b/tools/iio/iio_utils.c
index 8fb3214c70f2..4a7e4801cebf 100644
--- a/tools/iio/iio_utils.c
+++ b/tools/iio/iio_utils.c
@@ -117,13 +117,13 @@ int iioutils_get_type(unsigned *is_signed, unsigned *bytes, unsigned *bits_used,
         }
 
         dp = opendir(scan_el_dir);
-        if (dp == NULL) {
+        if (!dp) {
                 ret = -errno;
                 goto error_free_builtname_generic;
         }
 
         ret = -ENOENT;
-        while (ent = readdir(dp), ent != NULL)
+        while (ent = readdir(dp), ent)
                 /*
                  * Do we allow devices to override a generic name with
                  * a specific one?
@@ -138,7 +138,7 @@ int iioutils_get_type(unsigned *is_signed, unsigned *bytes, unsigned *bits_used,
                         }
 
                         sysfsfp = fopen(filename, "r");
-                        if (sysfsfp == NULL) {
+                        if (!sysfsfp) {
                                 ret = -errno;
                                 printf("failed to open %s\n", filename);
                                 goto error_free_filename;
@@ -235,13 +235,13 @@ int iioutils_get_param_float(float *output, const char *param_name,
         }
 
         dp = opendir(device_dir);
-        if (dp == NULL) {
+        if (!dp) {
                 ret = -errno;
                 goto error_free_builtname_generic;
         }
 
         ret = -ENOENT;
-        while (ent = readdir(dp), ent != NULL)
+        while (ent = readdir(dp), ent)
                 if ((strcmp(builtname, ent->d_name) == 0) ||
                     (strcmp(builtname_generic, ent->d_name) == 0)) {
                         ret = asprintf(&filename,
@@ -325,12 +325,12 @@ int build_channel_array(const char *device_dir,
                 return -ENOMEM;
 
         dp = opendir(scan_el_dir);
-        if (dp == NULL) {
+        if (!dp) {
                 ret = -errno;
                 goto error_free_name;
         }
 
-        while (ent = readdir(dp), ent != NULL)
+        while (ent = readdir(dp), ent)
                 if (strcmp(ent->d_name + strlen(ent->d_name) - strlen("_en"),
                            "_en") == 0) {
                         ret = asprintf(&filename,
@@ -341,7 +341,7 @@ int build_channel_array(const char *device_dir,
                         }
 
                         sysfsfp = fopen(filename, "r");
-                        if (sysfsfp == NULL) {
+                        if (!sysfsfp) {
                                 ret = -errno;
                                 free(filename);
                                 goto error_close_dir;
@@ -369,13 +369,13 @@ int build_channel_array(const char *device_dir,
                 }
 
         *ci_array = malloc(sizeof(**ci_array) * (*counter));
-        if (*ci_array == NULL) {
+        if (!*ci_array) {
                 ret = -ENOMEM;
                 goto error_close_dir;
         }
 
         seekdir(dp, 0);
-        while (ent = readdir(dp), ent != NULL) {
+        while (ent = readdir(dp), ent) {
                 if (strcmp(ent->d_name + strlen(ent->d_name) - strlen("_en"),
                            "_en") == 0) {
                         int current_enabled = 0;
@@ -391,7 +391,7 @@ int build_channel_array(const char *device_dir,
                         }
 
                         sysfsfp = fopen(filename, "r");
-                        if (sysfsfp == NULL) {
+                        if (!sysfsfp) {
                                 ret = -errno;
                                 free(filename);
                                 count--;
@@ -424,7 +424,7 @@ int build_channel_array(const char *device_dir,
                         current->name = strndup(ent->d_name,
                                                 strlen(ent->d_name) -
                                                 strlen("_en"));
-                        if (current->name == NULL) {
+                        if (!current->name) {
                                 free(filename);
                                 ret = -ENOMEM;
                                 count--;
@@ -452,7 +452,7 @@ int build_channel_array(const char *device_dir,
                         }
 
                         sysfsfp = fopen(filename, "r");
-                        if (sysfsfp == NULL) {
+                        if (!sysfsfp) {
                                 ret = -errno;
                                 printf("failed to open %s\n", filename);
                                 free(filename);
@@ -567,12 +567,12 @@ int find_type_by_name(const char *name, const char *type)
         char *filename;
 
         dp = opendir(iio_dir);
-        if (dp == NULL) {
+        if (!dp) {
                 printf("No industrialio devices available\n");
                 return -ENODEV;
         }
 
-        while (ent = readdir(dp), ent != NULL) {
+        while (ent = readdir(dp), ent) {
                 if (strcmp(ent->d_name, ".") != 0 &&
                     strcmp(ent->d_name, "..") != 0 &&
                     strlen(ent->d_name) > strlen(type) &&
@@ -595,7 +595,7 @@ int find_type_by_name(const char *name, const char *type)
                             ":", 1) != 0) {
                                 filename = malloc(strlen(iio_dir) + strlen(type)
                                                   + numstrlen + 6);
-                                if (filename == NULL) {
+                                if (!filename) {
                                         ret = -ENOMEM;
                                         goto error_close_dir;
                                 }
@@ -654,7 +654,7 @@ static int _write_sysfs_int(const char *filename, const char *basedir, int val,
         int test;
         char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
 
-        if (temp == NULL)
+        if (!temp)
                 return -ENOMEM;
 
         ret = sprintf(temp, "%s/%s", basedir, filename);
@@ -662,7 +662,7 @@ static int _write_sysfs_int(const char *filename, const char *basedir, int val,
                 goto error_free;
 
         sysfsfp = fopen(temp, "w");
-        if (sysfsfp == NULL) {
+        if (!sysfsfp) {
                 ret = -errno;
                 printf("failed to open %s\n", temp);
                 goto error_free;
@@ -683,7 +683,7 @@ static int _write_sysfs_int(const char *filename, const char *basedir, int val,
 
         if (verify) {
                 sysfsfp = fopen(temp, "r");
-                if (sysfsfp == NULL) {
+                if (!sysfsfp) {
                         ret = -errno;
                         printf("failed to open %s\n", temp);
                         goto error_free;
@@ -749,7 +749,7 @@ static int _write_sysfs_string(const char *filename, const char *basedir,
         FILE  *sysfsfp;
         char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
 
-        if (temp == NULL) {
+        if (!temp) {
                 printf("Memory allocation failed\n");
                 return -ENOMEM;
         }
@@ -759,7 +759,7 @@ static int _write_sysfs_string(const char *filename, const char *basedir,
                 goto error_free;
 
         sysfsfp = fopen(temp, "w");
-        if (sysfsfp == NULL) {
+        if (!sysfsfp) {
                 ret = -errno;
                 printf("Could not open %s\n", temp);
                 goto error_free;
@@ -780,7 +780,7 @@ static int _write_sysfs_string(const char *filename, const char *basedir,
 
         if (verify) {
                 sysfsfp = fopen(temp, "r");
-                if (sysfsfp == NULL) {
+                if (!sysfsfp) {
                         ret = -errno;
                         printf("Could not open file to verify\n");
                         goto error_free;
@@ -855,7 +855,7 @@ int read_sysfs_posint(const char *filename, const char *basedir)
         FILE  *sysfsfp;
         char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
 
-        if (temp == NULL) {
+        if (!temp) {
                 printf("Memory allocation failed");
                 return -ENOMEM;
         }
@@ -865,7 +865,7 @@ int read_sysfs_posint(const char *filename, const char *basedir)
                 goto error_free;
 
         sysfsfp = fopen(temp, "r");
-        if (sysfsfp == NULL) {
+        if (!sysfsfp) {
                 ret = -errno;
                 goto error_free;
         }
@@ -902,7 +902,7 @@ int read_sysfs_float(const char *filename, const char *basedir, float *val)
         FILE  *sysfsfp;
         char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
 
-        if (temp == NULL) {
+        if (!temp) {
                 printf("Memory allocation failed");
                 return -ENOMEM;
         }
@@ -912,7 +912,7 @@ int read_sysfs_float(const char *filename, const char *basedir, float *val)
                 goto error_free;
 
         sysfsfp = fopen(temp, "r");
-        if (sysfsfp == NULL) {
+        if (!sysfsfp) {
                 ret = -errno;
                 goto error_free;
         }
@@ -949,7 +949,7 @@ int read_sysfs_string(const char *filename, const char *basedir, char *str)
         FILE  *sysfsfp;
         char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
 
-        if (temp == NULL) {
+        if (!temp) {
                 printf("Memory allocation failed");
                 return -ENOMEM;
         }
@@ -959,7 +959,7 @@ int read_sysfs_string(const char *filename, const char *basedir, char *str)
                 goto error_free;
 
         sysfsfp = fopen(temp, "r");
-        if (sysfsfp == NULL) {
+        if (!sysfsfp) {
                 ret = -errno;
                 goto error_free;
         }
diff --git a/tools/iio/lsiio.c b/tools/iio/lsiio.c
index 7f432a55a6c4..4f8172fe7881 100644
--- a/tools/iio/lsiio.c
+++ b/tools/iio/lsiio.c
@@ -46,10 +46,10 @@ 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"))
                         printf("   %-10s\n", ent->d_name);
@@ -107,12 +107,12 @@ static int dump_devices(void)
         DIR *dp;
 
         dp = opendir(iio_dir);
-        if (dp == NULL) {
+        if (!dp) {
                 printf("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;
 
@@ -134,7 +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;