All ioctl commands for sd card go to timeout

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#3,866 5 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
c, linux
Domain
embedded-iot, operating-systems

Research direction

Reproduce sudo ./mmc status get /dev/mmcblk0 on the reported Pi 3B+ setup and inspect the resulting dmesg output. Start at the sdhost-bcm2835 __mmc_blk_ioctl_cmd error shown in the report, then determine why the ioctl times out. Done means identifying the cause and confirming that SD-card ioctl commands return successfully.

Written by the indexing model from the issue text.

Description

WIth sdtools or mmc all cmd go to timeout.
For example if i try
sudo ./mmc status get /dev/mmcblk0
then i'll get
ioctl: Connection timed out
Could not read response to SEND_STATUS from /dev/mmcblk0

I have a Pi3B+ with debian 10 (buster)
kernel: Linux raspberrypi 5.4.51-v7+ #1333 SMP Mon Aug 10 16:45:19 BST 2020 armv7l GNU/Linux
With dmesg I see
[ 941.588296] mmcblk0:
[ 1783.869652] sdhost-bcm2835 3f202000.mmc: __mmc_blk_ioctl_cmd: cmd error -110

Thanks.

Dominant language
C
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