[i.MX28 - Linux]ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry - what is the reason?

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[i.MX28 - Linux]ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry - what is the reason?

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randalsteve
Contributor II

Hello!

I am running Linux on custom board with KARO TX28 module based on i.MX28 processor. Recently i connected Quectel UC20 module with USB to the board and i managed to connect to internet with pppd. However, I am not sure if everything is allright because i still get "ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1" message in dmesg. So far modem is working well - but I wonder if anybody know what is the reason of the message and how critical is this? Below i attached dmesg output.

Thanks in advance.

uname -r = 3.11.0-rc3-next-20130731-karo+

[ 3710.322649] usb 2-1: new high-speed USB device number 2 using ci_hdrc

[ 3710.474413] usb 2-1: default language 0x0409

[ 3710.475159] usb 2-1: udev 2, busnum 2, minor = 129

[ 3710.475239] usb 2-1: New USB device found, idVendor=05c6, idProduct=9003

[ 3710.475286] usb 2-1: New USB device strings: Mfr=3, Product=2, SerialNumber=0

[ 3710.475321] usb 2-1: Product: UMTS/HSPA Module

[ 3710.475355] usb 2-1: Manufacturer: Quectel, Incorporated

[ 3710.477612] usb 2-1: usb_probe_device

[ 3710.477682] usb 2-1: configuration #1 chosen from 1 choice

[ 3710.480530] usb 2-1: adding 2-1:1.0 (config #1, interface 0)

[ 3710.486061] option 2-1:1.0: usb_probe_interface

[ 3710.486290] option 2-1:1.0: usb_probe_interface - got id

[ 3710.486631] option 2-1:1.0: GSM modem (1-port) converter detected

[ 3710.512176] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0

[ 3710.513159] usb 2-1: adding 2-1:1.1 (config #1, interface 1)

[ 3710.518403] option 2-1:1.1: usb_probe_interface

[ 3710.518602] option 2-1:1.1: usb_probe_interface - got id

[ 3710.518949] option 2-1:1.1: GSM modem (1-port) converter detected

[ 3710.543650] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1

[ 3710.544398] usb 2-1: adding 2-1:1.2 (config #1, interface 2)

[ 3710.549120] option 2-1:1.2: usb_probe_interface

[ 3710.549351] option 2-1:1.2: usb_probe_interface - got id

[ 3710.549683] option 2-1:1.2: GSM modem (1-port) converter detected

[ 3710.563563] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2

[ 3710.564320] usb 2-1: adding 2-1:1.3 (config #1, interface 3)

[ 3710.574146] option 2-1:1.3: usb_probe_interface

[ 3710.574385] option 2-1:1.3: usb_probe_interface - got id

[ 3710.574718] option 2-1:1.3: GSM modem (1-port) converter detected

[ 3710.581133] usb 2-1: link qh2-0001/c76d5b00 start 1 [2/0 us]

[ 3710.588040] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB3

[ 3710.589152] usb 2-1: adding 2-1:1.4 (config #1, interface 4)

[ 3710.611542] option 2-1:1.4: usb_probe_interface

[ 3710.611765] option 2-1:1.4: usb_probe_interface - got id

[ 3710.612747] option 2-1:1.4: GSM modem (1-port) converter detected

[ 3710.623867] usb 2-1: link qh2-0001/c6e86dc0 start 0 [2/0 us]

[ 3710.640932] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB4

[ 3710.655651] hub 2-0:1.0: state 7 ports 1 chg 0000 evt 0002

[ 3725.370254] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3741.312757] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3741.584998] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 2

[ 3744.777761] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 3

[ 3746.477378] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 4

[ 3747.902255] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 5

[ 3750.929632] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 6

[ 3752.594250] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 7

[ 3754.104881] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 8

[ 3756.012754] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 9

[ 3757.210881] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3758.560628] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3761.652753] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3763.776875] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 2

[ 3765.118249] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 3

[ 3766.335384] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3766.702620] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 4

[ 3769.554252] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3771.235634] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3771.544626] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 2

[ 3772.671633] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3774.282379] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 3

[ 3774.428880] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3775.700754] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 4

[ 3777.310876] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 5

[ 3777.615133] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3779.152691] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3780.613898] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3780.713246] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 6

[ 3782.175875] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 7

[ 3789.712389] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3792.752677] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 2

[ 3792.757256] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3792.963883] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 3

[ 3793.172581] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 4

[ 3794.616755] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3797.953876] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3799.204255] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

[ 3800.483504] ci_hdrc ci_hdrc.1: detected XactErr len 0/4096 retry 1

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