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| author | Heinz Graalfs <graalfs@linux.vnet.ibm.com> | 2014-03-05 15:23:54 +0100 |
|---|---|---|
| committer | Cornelia Huck <cornelia.huck@de.ibm.com> | 2014-03-06 10:22:40 +0100 |
| commit | 79629b208fc0484ee448c4acfa3762f0350e97ce (patch) | |
| tree | c9a706ec6d539aad6f1aacd4201577ddcc2a8d24 /drivers/s390/cio/qdio_main.c | |
| parent | virtio-ccw: virtio-ccw adapter interrupt support. (diff) | |
| download | linux-79629b208fc0484ee448c4acfa3762f0350e97ce.tar.xz linux-79629b208fc0484ee448c4acfa3762f0350e97ce.zip | |
virtio_ccw: fix hang in set offline processing
During set offline processing virtio_grab_drvdata() incorrectly
calls dev_set_drvdata() to remove the virtio_ccw_device from the
parent ccw_device's driver data. This is wrong and ends up in a
hang during virtio_ccw_reset(), as the interrupt handler still
has need of the virtio_ccw_device.
A new field 'going_away' is introduced in struct virtio_ccw_device
to control the usage of the ccw_device's driver data pointer in
virtio_grab_drvdata().
Signed-off-by: Heinz Graalfs <graalfs@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/qdio_main.c')
0 files changed, 0 insertions, 0 deletions