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authorJan Glauber <jang@linux.vnet.ibm.com>2009-09-22 22:58:40 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-09-22 22:58:43 +0200
commit6541f7b68f229aacd2e453bc9e94335fc56419fe (patch)
treed60909e665626ed5656d4269712e50652f7de2cf /drivers/s390
parent1d7e1500a6acfc89415aa2524e2c475c980ac42a (diff)
downloadblackbird-op-linux-6541f7b68f229aacd2e453bc9e94335fc56419fe.tar.gz
blackbird-op-linux-6541f7b68f229aacd2e453bc9e94335fc56419fe.zip
[S390] qdio: change state of all primed input buffers
If input buffers stay in primed state qdio may not receive further interrupts for the input queue depending on the firmware. That can cause a connection hang on OSA cards. Change the state of all primed input buffers that are not acknowledged to not initialized. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/cio/qdio_main.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 21766c791ad6..4be6e84b9599 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -455,6 +455,8 @@ static inline void inbound_primed(struct qdio_q *q, int count)
count--;
if (!count)
return;
+ /* need to change ALL buffers to get more interrupts */
+ set_buf_states(q, q->first_to_check, SLSB_P_INPUT_NOT_INIT, count);
}
static int get_inbound_buffer_frontier(struct qdio_q *q)
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