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Banana Pi Kernel errors

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Hi,

I'm seeing kernel error messages on my Banana Pi, that I would like to know how to fix them. I googled them and it seems that I'm not the only user experiencing them, other people on this forum posted logs that contained the same errors, so I assume these are seen by everyone using the LeMaker kernels. I can see these errors in the 3.4.90 kernel as wells as a new kernel 3.4.103 built from the LeMaker sources on github.

So, here are all the errors I see during boot in /var/log/syslog:
  1. Sep 30 14:43:40 BananaPi kernel: [    0.000000] start_kernel(): bug: interrupts were enabled early
  2. Sep 30 14:43:40 BananaPi kernel: [    1.464886] gpio count < =0 ,gpio_count is: 0
  3. Sep 30 14:43:40 BananaPi kernel: [    2.571668] invalid gpio pin in fex configuration : -1
  4. Sep 30 14:43:40 BananaPi kernel: [    4.411475] [mmc-err] smc 0 err, cmd 52,  RTO
  5. Sep 30 14:43:40 BananaPi kernel: [    4.419982] [mmc-err] smc 0 err, cmd 52,  RTO
  6. Sep 30 14:43:40 BananaPi kernel: [    4.467592] [mmc-err] smc 0 err, cmd 5,  RTO
  7. Sep 30 14:43:40 BananaPi kernel: [    4.475914] [mmc-err] smc 0 err, cmd 5,  RTO
  8. Sep 30 14:43:40 BananaPi kernel: [    4.484234] [mmc-err] smc 0 err, cmd 5,  RTO
  9. Sep 30 14:43:40 BananaPi kernel: [    4.492555] [mmc-err] smc 0 err, cmd 5,  RTO
  10. Sep 30 14:43:40 BananaPi kernel: [   13.853594] otg_wakelock_init: No USB transceiver found
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Note: I configured rsyslog so all messages with the priority error or higher are logged to a seperate errors.log file. You can see these messages in the standard syslog file, too, but there are other (non-error) messages inbetween those lines. So you have to search for these specificly.

I'm especially interested in the first 3 errors (start_kernel bug and gpio count/invalid gpio) and the last one (otg_wakelock_init). All the "mmc-err" messages can be safely ignored according to Hans de Goede who works on the linux-sunxi kernel.

So, how can we fix these errors?

Thanks,

Timo
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