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Input: sparse-keymap - report KEY_UNKNOWN for unknown scan codes

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This allows for debugging non-functional keys easily from
userspace.

Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
tirimbino
Seth Forshee 14 years ago committed by Dmitry Torokhov
parent f3cf5c4fed
commit 170531bae6
1 changed files with 8 additions and 0 deletions
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  1. 8
      drivers/input/sparse-keymap.c

8
drivers/input/sparse-keymap.c
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@ -209,6 +209,7 @@ int sparse_keymap_setup(struct input_dev *dev,
} }
if (test_bit(EV_KEY, dev->evbit)) { if (test_bit(EV_KEY, dev->evbit)) {
__set_bit(KEY_UNKNOWN, dev->keybit);
__set_bit(EV_MSC, dev->evbit); __set_bit(EV_MSC, dev->evbit);
__set_bit(MSC_SCAN, dev->mscbit); __set_bit(MSC_SCAN, dev->mscbit);
} }
@ -311,12 +312,19 @@ bool sparse_keymap_report_event(struct input_dev *dev, unsigned int code,
{ {
const struct key_entry *ke = const struct key_entry *ke =
sparse_keymap_entry_from_scancode(dev, code); sparse_keymap_entry_from_scancode(dev, code);
struct key_entry unknown_ke;
if (ke) { if (ke) {
sparse_keymap_report_entry(dev, ke, value, autorelease); sparse_keymap_report_entry(dev, ke, value, autorelease);
return true; return true;
} }
/* Report an unknown key event as a debugging aid */
unknown_ke.type = KE_KEY;
unknown_ke.code = code;
unknown_ke.keycode = KEY_UNKNOWN;
sparse_keymap_report_entry(dev, &unknown_ke, value, true);
return false; return false;
} }
EXPORT_SYMBOL(sparse_keymap_report_event); EXPORT_SYMBOL(sparse_keymap_report_event);

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