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

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>

diff --git a/drivers/input/joystick/walkera0701.c b/drivers/input/joystick/walkera0701.c
index b76ac580703ce5dc9ef97fac6620adc47ea44273..a8bc2fe170dd83e12ff78706f97f9bc32a72e5cd 100644 (file)
--- a/drivers/input/joystick/walkera0701.c
+++ b/drivers/input/joystick/walkera0701.c
@@ -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;