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Device class reg: Always use 0-based index

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Lorenz Meier
2015-02-09 22:56:21 +01:00
parent 21bc9e4839
commit 138058d547
1 changed files with 12 additions and 16 deletions
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src/drivers/device/cdev.cpp
+12 -16
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@@ -116,34 +116,30 @@ CDev::register_class_devname(const char *class_devname)
if (class_devname == nullptr) {
return -EINVAL;
}
int class_instance = 0;
int ret = -ENOSPC;
while (class_instance < 4) {
if (class_instance == 0) {
ret = register_driver(class_devname, &fops, 0666, (void *)this);
if (ret == OK) break;
} else {
char name[32];
snprintf(name, sizeof(name), "%s%d", class_devname, class_instance);
ret = register_driver(name, &fops, 0666, (void *)this);
if (ret == OK) break;
}
char name[32];
snprintf(name, sizeof(name), "%s%d", class_devname, class_instance);
ret = register_driver(name, &fops, 0666, (void *)this);
if (ret == OK) break;
class_instance++;
}
if (class_instance == 4)
if (class_instance == 4) {
return ret;
}
return class_instance;
}
int
CDev::unregister_class_devname(const char *class_devname, unsigned class_instance)
{
if (class_instance > 0) {
char name[32];
snprintf(name, sizeof(name), "%s%u", class_devname, class_instance);
return unregister_driver(name);
}
return unregister_driver(class_devname);
char name[32];
snprintf(name, sizeof(name), "%s%u", class_devname, class_instance);
return unregister_driver(name);
}
int