Hi Uli,

> _mmc_detect_card_removed() calls mmc_sd_alive(), which tries to send a
> command to the SD card to see if it's still there, which in turn
> triggers the retune. IOW, this is expected to fail, and the error
> message is misleading.

This makes perfect sense to me. I disabled tuning in
_mmc_detect_card_removed() and the message is gone, of course. I'll send
a patch right away. With that sorted out, the patch works for me nicely
and we have *finally* RPM kicking in for SDHI. Looks good to me.

Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

However, I'd appreciate if Shimoda-san could also test this against his
test-suite to make sure there are no other issues unearthed now that RPM
is finally suspending the device. I will also add do additional
suspend/resume tests before I say Tested-by.

Good work so far, thanks!