xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tools:iio: save errno first

Browse Source 
The man-page of errno states, that errno should be saved before doing any
library call, as that call may have changed the value of errno. So, when
encountering any error, save errno first.
This patch affects generic_buffer.c, iio_event_monitor.c and iio_utils.c.

Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Hartmut Knaack
2015-05-31 14:39:48 +02:00
committed by Jonathan Cameron
parent f96d055e4b
commit 2b6a6e67af
3 changed files with 11 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
tools/iio/iio_utils.c
View File

@@ -129,8 +129,8 @@ int iioutils_get_type(unsigned *is_signed,
}
sysfsfp = fopen(filename, "r");
if (sysfsfp == NULL) {
printf("failed to open %s\n", filename);
ret = -errno;
printf("failed to open %s\n", filename);
goto error_free_filename;
}
@@ -141,8 +141,8 @@ int iioutils_get_type(unsigned *is_signed,
bits_used,
&padint, shift);
if (ret < 0) {
printf("failed to pass scan type description\n");
ret = -errno;
printf("failed to pass scan type description\n");
goto error_close_sysfsfp;
}
*be = (endianchar == 'b');
@@ -332,8 +332,8 @@ int build_channel_array(const char *device_dir,
}
sysfsfp = fopen(filename, "r");
if (sysfsfp == NULL) {
free(filename);
ret = -errno;
free(filename);
count--;
goto error_cleanup_array;
}
@@ -505,8 +505,8 @@ int _write_sysfs_int(char *filename, char *basedir, int val, int verify)
sprintf(temp, "%s/%s", basedir, filename);
sysfsfp = fopen(temp, "w");
if (sysfsfp == NULL) {
printf("failed to open %s\n", temp);
ret = -errno;
printf("failed to open %s\n", temp);
goto error_free;
}
fprintf(sysfsfp, "%d", val);
@@ -514,8 +514,8 @@ int _write_sysfs_int(char *filename, char *basedir, int val, int verify)
if (verify) {
sysfsfp = fopen(temp, "r");
if (sysfsfp == NULL) {
printf("failed to open %s\n", temp);
ret = -errno;
printf("failed to open %s\n", temp);
goto error_free;
}
fscanf(sysfsfp, "%d", &test);
@@ -556,8 +556,8 @@ int _write_sysfs_string(char *filename, char *basedir, char *val, int verify)
sprintf(temp, "%s/%s", basedir, filename);
sysfsfp = fopen(temp, "w");
if (sysfsfp == NULL) {
printf("Could not open %s\n", temp);
ret = -errno;
printf("Could not open %s\n", temp);
goto error_free;
}
fprintf(sysfsfp, "%s", val);
@@ -565,8 +565,8 @@ int _write_sysfs_string(char *filename, char *basedir, char *val, int verify)
if (verify) {
sysfsfp = fopen(temp, "r");
if (sysfsfp == NULL) {
printf("could not open file to verify\n");
ret = -errno;
printf("could not open file to verify\n");
goto error_free;
}
fscanf(sysfsfp, "%s", temp);