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Commit 53b41ba7 authored by Jan Glauber's avatar Jan Glauber Committed by Martin Schwidefsky
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[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: default avatarJan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 8853e505

drivers/s390/cio/qdio_thinint.c

+5 −1
Original line number Diff line number Diff line
@@ -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();

	}