s390/ccwgroup: obtain extra reference for asynchronous processing

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Commit 0b60f9ead5
"s390: use device_remove_file_self() instead of device_schedule_callback()"
changed ccwgroup to use an extra work queue instead of
device_schedule_callback. This function obtained an extra device
reference for its async work which is missing in the new implementation
and results in a "freeing memory with a lock still held" BUG. Fix
this by obtaining an extra reference for the async work.

Reported-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Sebastian Ott 2014-06-13 17:02:24 +02:00 • committed by Martin Schwidefsky

parent 613c4e0459

commit 9280ddb194

1 changed files with 4 additions and 1 deletions

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drivers/s390/cio/ccwgroup.c

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