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authorJan Glauber <jang@linux.vnet.ibm.com>2008-12-25 13:38:47 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-12-25 13:38:59 +0100
commit50f769df1c4bea766c4eb927eae35728fb93e305 (patch)
treec86228e6965de0ea84bddc2104d7dfa339e2a187 /drivers/s390/cio/qdio_setup.c
parent22f9934767f49012ffbae753b28b8055bd28348f (diff)
[S390] qdio: improve inbound buffer acknowledgement
- Use automatic acknowledgement of incoming buffers in QEBSM mode - Move ACK for non-QEBSM mode always to the newest buffer to prevent a race with qdio_stop_polling - Remove the polling spinlock, the upper layer drivers return new buffers in the same code path and could not run in parallel - Don't flood the error log in case of no-target-buffer-empty - In handle_inbound we check if we would overwrite an ACK'ed buffer, if so advance the pointer to the oldest ACK'ed buffer so we don't overwrite an empty buffer in qdio_stop_polling 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_setup.c')
-rw-r--r--drivers/s390/cio/qdio_setup.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 7323799b2ce..18d54fc21ce 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -167,7 +167,6 @@ 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;
- spin_lock_init(&q->u.in.lock);
setup_storage_lists(q, irq_ptr, input_sbal_array, i);
input_sbal_array += QDIO_MAX_BUFFERS_PER_Q;