Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-10 15:19:51 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

platform/chrome: cros_ec_sensorhub: Fix EC timestamp overflow

Browse Source 
EC is using 32 bit timestamps (us), and before converting it to 64bit
they were not casted, so it would overflow every 4s.
Regular overflow every ~70 minutes was not taken into account either.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
This commit is contained in:
Gwendal Grignou 2020-06-30 00:52:03 -07:00 committed by Enric Balletbo i Serra
parent 20b736872f
commit e48bc01ed5
1 changed files with 1 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/platform/chrome/cros_ec_sensorhub_ring.c
View File

@ -419,9 +419,7 @@ cros_ec_sensor_ring_process_event(struct cros_ec_sensorhub *sensorhub,
* Disable filtering since we might add more jitter
* if b is in a random point in time.
*/
new_timestamp = fifo_timestamp -
fifo_info->timestamp * 1000 +
in->timestamp * 1000;
new_timestamp = c - b * 1000 + a * 1000;
/*
* The timestamp can be stale if we had to use the fifo
* info timestamp.