Regarding SMBus

gopi ratnakaram gopi.ratnakaram at svayarobotics.com
Wed Sep 9 07:23:03 CEST 2020


Team,

I am working with xenomai patched with kernel 4.19.59 on an Industrial
motherboard which has an SMBus. After patching during my testing it was
observed that the SMbus got some issues and the bus is locking immediately
after running my application and the error log is as follows. But, when I
run my SMbus based application in the kernel 4.15.0 without RT patching it
was working fine. Is there any configuration setting while patching xenomai
is causing this issue?

--best regards,
R Gopi Krishna,
Svaya Robotics Pvt., Ltd.,
Hyderabad, India.
T: +91 40 2354 6019
F: +91 40 2354 7901


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[    1.291726] i801_smbus 0000:00:1f.4: SPD Write Disable is set
[    1.291801] i801_smbus 0000:00:1f.4: SMBus using PCI interrupt
[  366.625686] i801_smbus 0000:00:1f.4: Timeout waiting for interrupt!
[  366.625688] i801_smbus 0000:00:1f.4: Transaction timeout
[  366.832692] i801_smbus 0000:00:1f.4: Timeout waiting for interrupt!
[  366.832694] i801_smbus 0000:00:1f.4: Transaction timeout
[  367.040700] i801_smbus 0000:00:1f.4: Timeout waiting for interrupt!
[  367.040702] i801_smbus 0000:00:1f.4: Transaction timeout
[  367.050861] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  367.050911] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  367.050957] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  367.051000] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  367.051047] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  367.264710] i801_smbus 0000:00:1f.4: Timeout waiting for interrupt!
[  367.264712] i801_smbus 0000:00:1f.4: Transaction timeout
[  369.481794] i801_smbus 0000:00:1f.4: Timeout waiting for interrupt!
[  369.481796] i801_smbus 0000:00:1f.4: Transaction timeout
[  369.483827] i801_smbus 0000:00:1f.4: Failed terminating the transaction
[  369.483900] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.483947] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.483996] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.484043] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.484086] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.484133] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.484180] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.688801] i801_smbus 0000:00:1f.4: Timeout waiting for interrupt!
[  369.688803] i801_smbus 0000:00:1f.4: Transaction timeout
[  369.690829] i801_smbus 0000:00:1f.4: Failed terminating the transaction
[  369.690903] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.690951] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.690998] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691044] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691090] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691134] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691181] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691227] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691274] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691320] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691364] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691410] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691457] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691504] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691549] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691593] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691639] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691686] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691733] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691778] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691829] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691878] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691924] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.691971] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692018] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692064] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692108] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692155] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692201] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692248] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692294] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692338] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692385] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692432] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692479] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692525] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692568] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692615] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692662] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692709] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692756] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692846] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692896] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692943] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.692989] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693032] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693079] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693126] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693173] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693219] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693263] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693310] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693357] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693404] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693450] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693493] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693540] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693587] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693634] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693680] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693723] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693770] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693849] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693895] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693942] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.693988] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694035] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694082] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694126] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694173] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694219] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694266] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694312] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694356] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694404] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694451] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694498] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694544] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694587] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694634] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694681] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694728] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694774] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694853] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694903] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694949] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.694993] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.695040] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.695087] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.695134] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.695181] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.695225] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.695272] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.695319] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.695365] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.695411] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.695455] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  369.695501] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703199] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703258] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703306] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703352] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703395] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703442] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703489] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703535] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703581] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703625] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703672] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703718] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703765] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703813] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703857] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703913] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.703963] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704009] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704055] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704101] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704145] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704191] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704237] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704284] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704329] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704373] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704419] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704466] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704512] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704558] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704602] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704648] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704694] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704740] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704786] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704830] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704883] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704931] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.704977] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705023] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705069] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705113] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705159] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705205] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705252] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705297] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705341] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705388] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705434] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705480] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705525] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705569] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705616] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705662] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705708] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705754] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705798] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705844] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705891] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705938] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.705984] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706028] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706074] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706120] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706167] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706212] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706256] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706303] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706349] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706395] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706441] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706485] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706531] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706577] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706623] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706669] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706713] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706759] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706805] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706852] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706900] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706943] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.706989] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707036] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707082] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707127] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707172] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707218] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707264] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707311] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707356] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707400] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707447] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707493] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707540] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707585] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707629] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707676] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707722] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707768] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707814] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707858] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707914] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.707961] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708007] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708054] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708099] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708143] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708189] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708235] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708282] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708327] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708371] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708418] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708464] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708510] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
[  371.708556] i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!


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