sknsean

[ 9724.657046] ts_ref 9878520860698, ts 11932125000, sample_time 9890452985698
[ 9724.664063] ktime_get_real_ns: 1591107093184020949                       
[ 9724.672307] ts_ref 9878520860698, ts 11970575000, sample_time 9890491435698
[ 9724.679529] ktime_get_real_ns: 1591107093199481532                       
[ 9724.687721] ts_ref 9878520860698, ts 12009050000, sample_time 9890529910698
[ 9724.694953] ktime_get_real_ns: 1591107093214905074   
[ 9724.703022] ts_ref 9878520860698, ts 12047500000, sample_time 9890568360698                 
[ 9724.710277] ktime_get_real_ns: 1591107093230229324                                 
[ 9724.841221] Filesystems sync: 0.577 seconds                                                 
[ 9724.848980] Freezing user space processes ... (elapsed 0.004 seconds) done.

sknsean

[  104.849461] ts_ref 1591097304932154135, ts 2319900000, sample_time 1591097307252054135
[  104.857435] ktime_get_real_ns: 1591097307332212552
[  104.986268] ts_ref 1591097304932154135, ts 2358250000, sample_time 1591097307290404135
[  104.994423] ktime_get_real_ns: 1591097307469197094
[  105.002460] ts_ref 1591097304932154135, ts 2396625000, sample_time 1591097307328779135
[  105.010685] ktime_get_real_ns: 1591097307485455885
[  105.019509] ts_ref 1591097304932154135, ts 2434975000, sample_time 1591097307367129135
[  105.027550] ktime_get_real_ns: 1591097307502325677
[  105.035764] ts_ref 1591097304932154135, ts 2473325000, sample_time 1591097307405479135
[  105.043923] ktime_get_real_ns: 1591097307518695969

sknsean

[ 1709.754111] PM: suspend entry (deep)                                                        
[ 1709.874726] ts_ref 1591098973155955066, ts 9086000000, sample_time 1591098982241955066
[ 1709.882851] ktime_get_real_ns: 1591098982394784025                                   
[ 1709.890893] ts_ref 1591098973155955066, ts 9124450000, sample_time 1591098982280405066
[ 1709.899063] ktime_get_real_ns: 1591098982410995692                                   
[ 1709.907171] ts_ref 1591098973155955066, ts 9162900000, sample_time 1591098982318855066
[ 1709.915369] ktime_get_real_ns: 1591098982427300942                                    
[ 1709.923408] ts_ref 1591098973155955066, ts 9201350000, sample_time 1591098982357305066
[ 1709.931579] ktime_get_real_ns: 1591098982443510775                                    
[ 1709.939654] ts_ref 1591098973155955066, ts 9239800000, sample_time 1591098982395755066

sknsean

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
index 7de10bd636ea..7333443f58bc 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
@@ -288,6 +288,8 @@ static int st_lsm6dsx_reset_hw_ts(struct st_lsm6dsx_hw *hw)
 	if (err < 0)
 		return err;
 
+	printk("st_lsm6dsx_reset_hw_ts\n");
+

sknsean

[ 4431.680010] ts_ref 1591101738518724567, ts 7221575000, sample_time 1591101745740299567
[ 4431.682957] ts_ref 1591101738518724567, ts 7260075000, sample_time 1591101745778799567
[ 4431.686112] ts_ref 1591101738518724567, ts 7298575000, sample_time 1591101745817299567
[ 4431.689083] ts_ref 1591101738518724567, ts 7337100000, sample_time 1591101745855824567
[ 4431.692236] ts_ref 1591101738518724567, ts 7375600000, sample_time 1591101745894324567
[ 4431.748670] ts_ref 1591101738518724567, ts 7414150000, sample_time 1591101745932874567
[ 4431.754141] ts_ref 1591101738518724567, ts 7452625000, sample_time 1591101745971349567
[ 4431.760320] PM: suspend devices took 0.080 seconds
[ 4431.774183] Disabling non-boot CPUs ...                                                     
[ 4431.788933] st_lsm6dsx_resume_fifo                                                          

sknsean

[2020-06-02T11:33:43Z TRACE iio::accel::sample] secs: 1591097622, nano_secs: 224720151
[2020-06-02T11:33:43Z TRACE iio::accel::sample] 2020-06-02T11:33:42.224720151+00:00 17.888774138509017 -16.384416679879493 988.0537348282454 988.3514760742573
[2020-06-02T11:33:43Z TRACE iio::accel::sample] secs: 1591097622, nano_secs: 263245151
[2020-06-02T11:33:43Z TRACE iio::accel::sample] 2020-06-02T11:33:42.263245151+00:00 18.81922448776085 -15.529620506776176 988.9346160197591 989.2355670342396
[2020-06-02T11:33:43Z TRACE iio::accel::sample] secs: 1591097622, nano_secs: 301745151
[2020-06-02T11:33:43Z TRACE iio::accel::sample] 2020-06-02T11:33:42.301745151+00:00 18.82651065368557 -14.722952287141098 989.2205642278665 989.5092356914822
[2020-06-02T11:33:43Z TRACE iio::accel::sample] secs: 1591097622, nano_secs: 340270151
[  379.482370] st_lsm6dsx_read_fifo:_sensor->ts_ref 1591097616587270151
[2020-06-02T11:33:43Z TRACE iio::accel::sample] 2020-06-02T11:33:42.340270151+00:00 19.34991618934871 -16.655172899773525 988.377

sknsean

Without proposed patch:
[2020-05-29T11:13:47Z TRACE iio::accel::sample] secs: 1590750822, nano_secs: 797282819
[2020-05-29T11:13:47Z TRACE iio::accel::sample] 2020-05-29T11:13:42.797282819+00:00 -1.0148524088401274 -1.740063110774642 987.7824307008859 987.7844846657553                                 
[2020-05-29T11:13:47Z TRACE iio::accel::sample] secs: 1590750822, nano_secs: 835682819
[2020-05-29T11:13:47Z TRACE iio::accel::sample] 2020-05-29T11:13:42.835682819+00:00 -0.5581021880856127 -2.165485170104226 987.9956278545404 987.9981586337911                                 
[2020-05-29T11:13:47Z TRACE iio::accel::sample] secs: 1590750822, nano_secs: 874082819
[2020-05-29T11:13:47Z TRACE iio::accel::sample] 2020-05-29T11:13:42.874082819+00:00 -0.9239053756465125 -1.8559937471747574 988.2632038112322 988.2653784895906                                
[2020-05-29T11:13:47Z TRACE iio::accel::sample] secs: 1590750822, nano_secs: 912482819
[2020-05-29T11:13:47Z TRACE iio::accel::sample] 2020-05-29T11:13:42.91248281

sknsean

[2020-05-28T09:41:16Z TRACE iio::accel::sample] 2020-05-28T09:41:15.903637654+00:00 -11.811118811802974 6.211482230769612 987.7976367691058 987.887775127175                                   
[2020-05-28T09:41:16Z TRACE iio::accel::sample] 2020-05-28T09:41:15.942012654+00:00 -12.78092787610171 6.125860674893865 987.1406121683591 987.242354479641                                    
[2020-05-28T09:41:16Z TRACE iio::accel::sample] 2020-05-28T09:41:15.980387654+00:00 -12.283563831968149 5.75370755854793 987.1114739102438 987.2046662249613                                   
[2020-05-28T09:41:16Z TRACE iio::accel::sample] 2020-05-28T09:41:16.018762654+00:00 -11.856487786968692 5.973605582801284 988.2747912448968 988.3639629592157                                  
[2020-05-28T09:41:16Z TRACE iio::accel::sample] 2020-05-28T09:41:16.057137654+00:00 -12.4219853868751 6.697585007526335 988.2624380723216 988.3631973472778                                    
[2020-05-28T09:41:16Z TRACE iio::accel::sample] 2020-05-28T09:41

sknsean

[2020-05-28T09:47:42Z TRACE iio::accel::sample] 2020-05-28T09:47:42.269796440+00:00 -12.35269451639735 5.517005002705531 988.4441791356594 988.5367578766015
[2020-05-28T09:47:42Z TRACE iio::accel::sample] 2020-05-28T09:47:42.308196440+00:00 -12.505709200627532 5.870372618185833 988.4655219673878 988.5620578170839
[2020-05-28T09:47:42Z TRACE iio::accel::sample] 2020-05-28T09:47:42.346596440+00:00 -12.099361883974982 5.8113781156856135 987.4772499116168 987.5684714320382
[2020-05-28T09:47:42Z TRACE iio::accel::sample] 2020-05-28T09:47:42.384996440+00:00 -11.854040516787961 5.8686814578480195 988.6357424001957 988.7242238611399
[2020-05-28T09:47:42Z TRACE iio::accel::sample] 2020-05-28T09:47:42.423396440+00:00 -12.145902223515513 5.478042547109723 988.1326993252402 988.222527251204
[2020-05-28T09:47:42Z TRACE iio::accel::sample] 2020-05-28T09:47:42.461796440+00:00 -12.074101136373486 5.942349662711358 988.2774827465718 988.3691002564102
[2020-05-28T09:47:42Z TRACE iio::accel::sample] 2020-05-28T09:47:42.50019644

sknsean

[   74.916495] flexcan_enter_stop_mode ret 0
[   74.916858] flexcan_enter_stop_mode ret -110
[   74.916907] dpm_run_callback(): platform_pm_suspend+0x0/0x5c returns -110
[   74.917114] PM: Device 2090000.flexcan failed to suspend: error -110
[   74.917265] PM: Some devices failed to suspend, or early wake event detected
[   74.918541] flexcan_resume priv->in_stop_mode 1
[   74.918605] flexcan_exit_stop_mode ret 0
[   74.926479] PM: resume devices took 0.010 seconds
[   74.948269] OOM killer enabled.
[   74.948295] Restarting tasks ... done.