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drivers/sensors: Fixed the overflow problem of uint32_t subtracting large from small.

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Signed-off-by: likun17 <likun17@xiaomi.com>
This commit is contained in:
dongjiuzhu1
2024-07-22 12:59:40 +08:00
committed by Xiang Xiao
parent a5729a81e3
commit d88e0eac02
1 changed files with 2 additions and 2 deletions
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drivers/sensors/sensor.c
+2 -2
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@@ -399,7 +399,7 @@ static void sensor_generate_timing(FAR struct sensor_upperhalf_s *upper,
static bool sensor_is_updated(FAR struct sensor_upperhalf_s *upper, static bool sensor_is_updated(FAR struct sensor_upperhalf_s *upper,
FAR struct sensor_user_s *user) FAR struct sensor_user_s *user)
{ {
long delta = upper->state.generation - user->state.generation; long delta = (long long)upper->state.generation - user->state.generation;
if (delta <= 0) if (delta <= 0)
{ {
@@ -431,7 +431,7 @@ static void sensor_catch_up(FAR struct sensor_upperhalf_s *upper,
long delta; long delta;
circbuf_peek(&upper->timing, &generation, TIMING_BUF_ESIZE); circbuf_peek(&upper->timing, &generation, TIMING_BUF_ESIZE);
delta = generation - user->state.generation; delta = (long long)generation - user->state.generation;
if (delta > 0) if (delta > 0)
{ {
user->bufferpos = upper->timing.tail / TIMING_BUF_ESIZE; user->bufferpos = upper->timing.tail / TIMING_BUF_ESIZE;