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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-04-20 22:33:09 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-04-20 23:08:48 -0700 |
| commit | 71f3d070a309504cdfef87b9e98836395b75ae0e (patch) | |
| tree | 75ed4cbae62fece04fd06a15a7460fa8215bb2fa /drivers/input/keyboard/tc3589x-keypad.c | |
| parent | bcad87bd92f4331d4422c1afd571e66f7f5c95d6 (diff) | |
| download | linux-71f3d070a309504cdfef87b9e98836395b75ae0e.tar.gz linux-71f3d070a309504cdfef87b9e98836395b75ae0e.tar.xz | |
Input: tc3589x-keypad - remove unnecessary checks
settle_time and debounce_period are u8 and thus can not be greater than
TC3589x_MAX_DEBOUNCE_SETTLE which is 255.
There also no need to mask out nibbles form board->krow and board->kcol
as we validate that they are in correct range.
Reported-by: Werner <w.landgraf@ru.ru>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/keyboard/tc3589x-keypad.c')
| -rw-r--r-- | drivers/input/keyboard/tc3589x-keypad.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/drivers/input/keyboard/tc3589x-keypad.c b/drivers/input/keyboard/tc3589x-keypad.c index 2dee3e4e7c6f..f4da2a7a6970 100644 --- a/drivers/input/keyboard/tc3589x-keypad.c +++ b/drivers/input/keyboard/tc3589x-keypad.c @@ -96,21 +96,15 @@ static int tc3589x_keypad_init_key_hardware(struct tc_keypad *keypad) { int ret; struct tc3589x *tc3589x = keypad->tc3589x; - u8 settle_time = keypad->board->settle_time; - u8 dbounce_period = keypad->board->debounce_period; - u8 rows = keypad->board->krow & 0xf; /* mask out the nibble */ - u8 column = keypad->board->kcol & 0xf; /* mask out the nibble */ - - /* validate platform configurations */ - if (keypad->board->kcol > TC3589x_MAX_KPCOL || - keypad->board->krow > TC3589x_MAX_KPROW || - keypad->board->debounce_period > TC3589x_MAX_DEBOUNCE_SETTLE || - keypad->board->settle_time > TC3589x_MAX_DEBOUNCE_SETTLE) + const struct tc3589x_keypad_platform_data *board = keypad->board; + + /* validate platform configuration */ + if (board->kcol > TC3589x_MAX_KPCOL || board->krow > TC3589x_MAX_KPROW) return -EINVAL; /* configure KBDSIZE 4 LSbits for cols and 4 MSbits for rows */ ret = tc3589x_reg_write(tc3589x, TC3589x_KBDSIZE, - (rows << KP_ROW_SHIFT) | column); + (board->krow << KP_ROW_SHIFT) | board->kcol); if (ret < 0) return ret; @@ -124,12 +118,14 @@ static int tc3589x_keypad_init_key_hardware(struct tc_keypad *keypad) return ret; /* Configure settle time */ - ret = tc3589x_reg_write(tc3589x, TC3589x_KBDSETTLE_REG, settle_time); + ret = tc3589x_reg_write(tc3589x, TC3589x_KBDSETTLE_REG, + board->settle_time); if (ret < 0) return ret; /* Configure debounce time */ - ret = tc3589x_reg_write(tc3589x, TC3589x_KBDBOUNCE, dbounce_period); + ret = tc3589x_reg_write(tc3589x, TC3589x_KBDBOUNCE, + board->debounce_period); if (ret < 0) return ret; |