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[S390] qdio: fix kernel panic for zfcp 31-bit

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The queue_start_poll function pointer field in struct qdio_initialize
had to change its type and become a vector of function pointers to
support asynchronous delivery of storage blocks so rename the field to
make the type change explicit and ensure no other user of qdio tries
to use the field the old way. During setting up the qdio queues, only
dereference vector elements if the vector is actually allocated.

Signed-off-by: Steffen Maier <[email protected]>
Signed-off-by: Einar Lueck <[email protected]>
Signed-off-by: Jan Glauber <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
This commit is contained in:
Steffen Maier 2011-12-27 11:27:26 +01:00 • committed by Martin Schwidefsky
commit e58b0d902f
3 changed files with 6 additions and 4 deletions
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3
drivers/s390/cio/qdio_setup.c
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@ -177,7 +177,8 @@ static void setup_queues(struct qdio_irq *irq_ptr,
setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i);
q->is_input_q = 1;
q->u.in.queue_start_poll = qdio_init->queue_start_poll[i];
q->u.in.queue_start_poll = qdio_init->queue_start_poll_array ?
qdio_init->queue_start_poll_array[i] : NULL;
setup_storage_lists(q, irq_ptr, input_sbal_array, i);
input_sbal_array += QDIO_MAX_BUFFERS_PER_Q;

2
drivers/s390/net/qeth_core_main.c
View file

@ -4521,7 +4521,7 @@ static int qeth_qdio_establish(struct qeth_card *card)
init_data.no_output_qs = card->qdio.no_out_queues;
init_data.input_handler = card->discipline.input_handler;
init_data.output_handler = card->discipline.output_handler;
init_data.queue_start_poll = queue_start_poll;
init_data.queue_start_poll_array = queue_start_poll;
init_data.int_parm = (unsigned long) card;
init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;