Hi,
I just bisected and reverted this commit.
With it I am unable to read MMC cards via Ricoh MMC function,
support for which I added recently.
07:00.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev
12)
The logs show lot of errors like this:
[ 219.590748] mmc1: new MMC card at address 0001
[ 219.639449] mmcblk0: mmc1:0001 MMC 483 MiB
[ 219.647008] mmcblk0: retrying using single block read
[ 219.649262] mmcblk0: error -84 transferring data, sector 0, nr 8, card
status 0x900
[ 219.649271] end_request: I/O error, dev mmcblk0, sector 0
[ 219.651964] mmcblk0: error -84 transferring data, sector 1, nr 7, card
status 0x900
[ 219.651969] end_request: I/O error, dev mmcblk0, sector 1
[ 219.654202] mmcblk0: error -84 transferring data, sector 2, nr 6, card
status 0x900
[ 219.654206] end_request: I/O error, dev mmcblk0, sector 2
[ 219.657049] mmcblk0: error -84 transferring data, sector 3, nr 5, card
status 0x900
[ 219.657054] end_request: I/O error, dev mmcblk0, sector 3
[ 219.661094] mmcblk0: error -84 transferring data, sector 4, nr 4, card
status 0x900
[ 219.661100] end_request: I/O error, dev mmcblk0, sector 4
[ 219.663347] mmcblk0: error -84 transferring data, sector 5, nr 3, card
status 0x900
[ 219.663352] end_request: I/O error, dev mmcblk0, sector 5
[ 219.665593] mmcblk0: error -84 transferring data, sector 6, nr 2, card
status 0x900
[ 219.665598] end_request: I/O error, dev mmcblk0, sector 6
[ 219.667905] mmcblk0: error -84 transferring data, sector 7, nr 1, card
status 0x900
[ 219.667910] end_request: I/O error, dev mmcblk0, sector 7
[ 219.667915] Buffer I/O error on device mmcblk0, logical block 0
[ 219.672258] mmcblk0: retrying using single block read
....
Now that reader in not standard (it doesn't claim SDHCI, but work very
similiar),
so it might be device specific bug or not.
One thing for sure, it doesn't physicaly support 8-bit (although the MMC Plus
card I tested
probably does via extra connectors).
Best regards,
Maxim Levitsky
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