Ticket #1350 (closed defect: worksforme)

Opened 5 years ago

Last modified 5 years ago

bt module does not enumerate

Reported by: roh@… Owned by: openmoko-kernel@…
Priority: high Milestone:
Component: kernel Version: current svn head
Severity: normal Keywords:
Cc: buglog@… Blocked By:
Blocking: Estimated Completion (week):
HasPatchForReview: PatchReviewResult:
Reproducible:

Description

on 2.6.24+git20080416-r0

echo 1 > /sys/bus/platform/drivers/neo1973-pm-bt/neo1973-pm-bt.0/power_on

does not get the bt module enumerated on usb

dmesg shows that it allegedly set 900 into ldo4 -> 0.9V ?

echo 3200 > /sys/devices/platform/s3c2440-i2c/i2c-adapter/i2c-0/0-0073/voltage_ldo4
echo 1 > /sys/bus/platform/drivers/neo1973-pm-bt/neo1973-pm-bt.0/reset
echo 0 > /sys/bus/platform/drivers/neo1973-pm-bt/neo1973-pm-bt.0/reset

gets bt enumerated on usb

-> some bug in the sysfs logic for neo1973-pm-bt?

Change History

comment:1 Changed 5 years ago by andy@…

Heh I recognize this issue, it has a surprising reason. You can make this
happen if the first time after boot you do

echo 1>/sys...

and not

echo 1 >/sys...

It's not actually a kernel issue if I understood it.

comment:2 Changed 5 years ago by andy@…

  • Status changed from new to closed
  • Resolution set to worksforme

I guess it was described, did not hear any more about it so closing.

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