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Input: walkera0701 - fix abs() calculations on 64 bit values

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abs() function can not be used with 64 bit values, so let's switch to
abs64(). From include/linux/kernel.h:

/*
 * abs() handles unsigned and signed longs, ints, shorts and chars.
 * For all input types abs() returns a signed long.
 * abs() should not be used for 64-bit types (s64, u64, long long)
 * - use abs64() for those.
 */

Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2015-09-05 10:19:38 -07:00
parent 86a39bffc4
commit 46b018fa95
1 changed files with 2 additions and 2 deletions
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4
drivers/input/joystick/walkera0701.c
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@ -150,7 +150,7 @@ static void walkera0701_irq_handler(void *handler_data)
if (w->counter == 24) { /* full frame */
walkera0701_parse_frame(w);
w->counter = NO_SYNC;
if (abs(pulse_time - SYNC_PULSE) < RESERVE) /* new frame sync */
if (abs64(pulse_time - SYNC_PULSE) < RESERVE) /* new frame sync */
w->counter = 0;
} else {
if ((pulse_time > (ANALOG_MIN_PULSE - RESERVE)
@ -161,7 +161,7 @@ static void walkera0701_irq_handler(void *handler_data)
} else
w->counter = NO_SYNC;
}
} else if (abs(pulse_time - SYNC_PULSE - BIN0_PULSE) <
} else if (abs64(pulse_time - SYNC_PULSE - BIN0_PULSE) <
RESERVE + BIN1_PULSE - BIN0_PULSE) /* frame sync .. */
w->counter = 0;