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| author | Jan Glauber <jang@linux.vnet.ibm.com> | 2008-08-21 21:46:33 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-08-21 21:46:39 +0400 |
| commit | 53b41ba7ce4563c33a0449fbcbbd70665477d654 (patch) | |
| tree | 78aa9a9bb1675aea597bc2b88a3d0ca1a18de129 /drivers/s390/cio/qdio_thinint.c | |
| parent | 8853e505a15f31fe608cb50e038ba2f794eed923 (diff) | |
| download | linux-53b41ba7ce4563c33a0449fbcbbd70665477d654.tar.xz | |
[S390] qdio: prevent oopsing if qdio_establish fails
If qdio_establish fails we call qdio_shutdown to cleanup the
qdio subchannel. The tiq_list entry may not be valid at that
time, therefore we must ignore queues with an invalid list entry
in tiqdio_remove_input_queues.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/qdio_thinint.c')
| -rw-r--r-- | drivers/s390/cio/qdio_thinint.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index 9291a771d812..ea7f61400267 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -113,7 +113,11 @@ void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr) struct qdio_q *q; int i; - for_each_input_queue(irq_ptr, q, i) { + for (i = 0; i < irq_ptr->nr_input_qs; i++) { + q = irq_ptr->input_qs[i]; + /* if establish triggered an error */ + if (!q || !q->entry.prev || !q->entry.next) + continue; list_del_rcu(&q->entry); synchronize_rcu(); } |