diff options
Diffstat (limited to 'drivers/accessibility/braille/braille_console.c')
| -rw-r--r-- | drivers/accessibility/braille/braille_console.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/accessibility/braille/braille_console.c b/drivers/accessibility/braille/braille_console.c index d21167bfc865..dc34a5b8bcee 100644 --- a/drivers/accessibility/braille/braille_console.c +++ b/drivers/accessibility/braille/braille_console.c | |||
| @@ -359,6 +359,9 @@ int braille_register_console(struct console *console, int index, | |||
| 359 | char *console_options, char *braille_options) | 359 | char *console_options, char *braille_options) |
| 360 | { | 360 | { |
| 361 | int ret; | 361 | int ret; |
| 362 | |||
| 363 | if (!(console->flags & CON_BRL)) | ||
| 364 | return 0; | ||
| 362 | if (!console_options) | 365 | if (!console_options) |
| 363 | /* Only support VisioBraille for now */ | 366 | /* Only support VisioBraille for now */ |
| 364 | console_options = "57600o8"; | 367 | console_options = "57600o8"; |
| @@ -374,15 +377,17 @@ int braille_register_console(struct console *console, int index, | |||
| 374 | braille_co = console; | 377 | braille_co = console; |
| 375 | register_keyboard_notifier(&keyboard_notifier_block); | 378 | register_keyboard_notifier(&keyboard_notifier_block); |
| 376 | register_vt_notifier(&vt_notifier_block); | 379 | register_vt_notifier(&vt_notifier_block); |
| 377 | return 0; | 380 | return 1; |
| 378 | } | 381 | } |
| 379 | 382 | ||
| 380 | int braille_unregister_console(struct console *console) | 383 | int braille_unregister_console(struct console *console) |
| 381 | { | 384 | { |
| 382 | if (braille_co != console) | 385 | if (braille_co != console) |
| 383 | return -EINVAL; | 386 | return -EINVAL; |
| 387 | if (!(console->flags & CON_BRL)) | ||
| 388 | return 0; | ||
| 384 | unregister_keyboard_notifier(&keyboard_notifier_block); | 389 | unregister_keyboard_notifier(&keyboard_notifier_block); |
| 385 | unregister_vt_notifier(&vt_notifier_block); | 390 | unregister_vt_notifier(&vt_notifier_block); |
| 386 | braille_co = NULL; | 391 | braille_co = NULL; |
| 387 | return 0; | 392 | return 1; |
| 388 | } | 393 | } |
