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Input: ff-memless - fix a couple min_t() casts

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envelope->attack_level is a u16 type.  We're trying to clamp it here
so it's between 0 and 0x7fff.  Unfortunately, the cast to __s16 turns
all the values larger than 0x7fff into negative numbers and min_t()
thinks they are less than 0x7fff.  envelope_level is an int so now
we've got negative values stored there.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dan Carpenter 2012-07-07 18:17:54 -07:00 committed by Dmitry Torokhov
parent c6bd9d4655
commit 9a932145f2
1 changed files with 2 additions and 2 deletions
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4
drivers/input/ff-memless.c
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@ -176,7 +176,7 @@ static int apply_envelope(struct ml_effect_state *state, int value,
value, envelope->attack_level);
time_from_level = jiffies_to_msecs(now - state->play_at);
time_of_envelope = envelope->attack_length;
envelope_level = min_t(__s16, envelope->attack_level, 0x7fff);
envelope_level = min_t(u16, envelope->attack_level, 0x7fff);
} else if (envelope->fade_length && effect->replay.length &&
time_after(now,
@ -184,7 +184,7 @@ static int apply_envelope(struct ml_effect_state *state, int value,
time_before(now, state->stop_at)) {
time_from_level = jiffies_to_msecs(state->stop_at - now);
time_of_envelope = envelope->fade_length;
envelope_level = min_t(__s16, envelope->fade_level, 0x7fff);
envelope_level = min_t(u16, envelope->fade_level, 0x7fff);
} else
return value;