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eMMC message: "mmc2: running CQE recovery"

Question asked by Richard Hu on May 15, 2020
Latest reply on May 17, 2020 by Richard Hu

Hello, NXP support team:

 

 

The platform is "i.mx8mm".

When we write data to eMMC, there is message " mmc2: running CQE recovery" from kernel.

 

For example:
"dd" random data to eMMC

dd if=/dev/urandom of=/sd_test bs=1M count=500

[  199.947978] mmc2: running CQE recovery

[  199.953962] mmc2: running CQE recovery

[  199.959086] mmc2: running CQE recovery

[  200.171864] mmc2: running CQE recovery

I check the message in “drivers/mmc/core/core.c”

“mmc_cqe_recovery” means “Recover from CQE errors”.

 

It doesn't happen on all of the boards.

Have you seen this message before?

Does it mean something wrong? or potential risk?
Or this message is normal?

 

BR,

 

Richard

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