When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. This cleans up a lot of unneeded code and logic around the debugfs wimax files, making all of this much simpler and easier to understand.
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| @@ -98,9 +98,7 @@ · 97 unmodified lines | ||
| 98 | 98 | * To manipulate from user space the levels, create a debugfs dentry |
| 99 | 99 | * and then register each submodule with: |
| 100 | 100 | * |
| 101 | − * result = d_level_register_debugfs("PREFIX_", submodule_X, parent); | |
| 102 | − * if (result < 0) | |
| 103 | − * goto error; | |
| 101 | + * d_level_register_debugfs("PREFIX_", submodule_X, parent); | |
| 104 | 102 | * |
| 105 | 103 | * Where PREFIX_ is a name of your chosing. This will create debugfs |
| 106 | 104 | * file with a single numeric value that can be use to tweak it. To |
| @@ -408,25 +406,13 @@ do { \ · 301 unmodified lines | ||
| 408 | 406 | * @submodule: name of submodule (not a string, just the name) |
| 409 | 407 | * @dentry: debugfs parent dentry |
| 410 | 408 | * |
| 411 | − * Returns: 0 if ok, < 0 errno on error. | |
| 412 | − * | |
| 413 | 409 | * For removing, just use debugfs_remove_recursive() on the parent. |
| 414 | 410 | */ |
| 415 | 411 | #define d_level_register_debugfs(prefix, name, parent) \ |
| 416 | 412 | ({ \ |
| 417 | − int rc; \ | |
| 418 | − struct dentry *fd; \ | |
| 419 | − struct dentry *verify_parent_type = parent; \ | |
| 420 | − fd = debugfs_create_u8( \ | |
| 421 | − prefix #name, 0600, verify_parent_type, \ | |
| 413 | + debugfs_create_u8( \ | |
| 414 | + prefix #name, 0600, parent, \ | |
| 422 | 415 | &(D_LEVEL[__D_SUBMODULE_ ## name].level)); \ |
| 423 | − rc = PTR_ERR(fd); \ | |
| 424 | − if (IS_ERR(fd) && rc != -ENODEV) \ | |
| 425 | − printk(KERN_ERR "%s: Can't create debugfs entry %s: " \ | |
| 426 | − "%d\n", __func__, prefix #name, rc); \ | |
| 427 | − else \ | |
| 428 | − rc = 0; \ | |
| 429 | − rc; \ | |
| 430 | 416 | }) |
| 431 | 417 | |
| 432 | 418 | |