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Input: omap4-keypad - use guard notation when acquiring mutex

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This makes the code more compact and error handling more robust
by ensuring that mutexes are released in all code paths when control
leaves critical section.

Link: https://lore.kernel.org/r/20240825051627.2848495-13-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2024-08-24 22:16:16 -07:00
parent 405b1762ae
commit a49e229319
1 changed files with 1 additions and 3 deletions
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4
drivers/input/keyboard/omap4-keypad.c
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@ -144,7 +144,7 @@ static void omap4_keypad_scan_keys(struct omap4_keypad *keypad_data, u64 keys)
{
u64 changed;
mutex_lock(&keypad_data->lock);
guard(mutex)(&keypad_data->lock);
changed = keys ^ keypad_data->keys;
@ -158,8 +158,6 @@ static void omap4_keypad_scan_keys(struct omap4_keypad *keypad_data, u64 keys)
omap4_keypad_report_keys(keypad_data, changed & keys, true);
keypad_data->keys = keys;
mutex_unlock(&keypad_data->lock);
}
/* Interrupt handlers */