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authorBrian King <brking@linux.vnet.ibm.com>2009-06-18 09:06:52 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-06-21 11:09:56 -0500
commitf1d7fb7a8ab55357b6c7d44a53f644a043680ed1 (patch)
treeecd98c95e8eed62479e9c04d9af5a336e951de1f
parent7414705ea4aef9ce438e547f3138a680d2d1096c (diff)
downloadop-kernel-dev-f1d7fb7a8ab55357b6c7d44a53f644a043680ed1.zip
op-kernel-dev-f1d7fb7a8ab55357b6c7d44a53f644a043680ed1.tar.gz
ibmvfc: Process async events before command responses
Since async events could indicate changes to link status, or events which could affect decisions made during discovery, we should process async events prior to command completion responses. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index b4b805e..497a4cc 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -2783,27 +2783,27 @@ static void ibmvfc_tasklet(void *data)
spin_lock_irqsave(vhost->host->host_lock, flags);
while (!done) {
- /* Pull all the valid messages off the CRQ */
- while ((crq = ibmvfc_next_crq(vhost)) != NULL) {
- ibmvfc_handle_crq(crq, vhost);
- crq->valid = 0;
- }
-
/* Pull all the valid messages off the async CRQ */
while ((async = ibmvfc_next_async_crq(vhost)) != NULL) {
ibmvfc_handle_async(async, vhost);
async->valid = 0;
}
- vio_enable_interrupts(vdev);
- if ((crq = ibmvfc_next_crq(vhost)) != NULL) {
- vio_disable_interrupts(vdev);
+ /* Pull all the valid messages off the CRQ */
+ while ((crq = ibmvfc_next_crq(vhost)) != NULL) {
ibmvfc_handle_crq(crq, vhost);
crq->valid = 0;
- } else if ((async = ibmvfc_next_async_crq(vhost)) != NULL) {
+ }
+
+ vio_enable_interrupts(vdev);
+ if ((async = ibmvfc_next_async_crq(vhost)) != NULL) {
vio_disable_interrupts(vdev);
ibmvfc_handle_async(async, vhost);
async->valid = 0;
+ } else if ((crq = ibmvfc_next_crq(vhost)) != NULL) {
+ vio_disable_interrupts(vdev);
+ ibmvfc_handle_crq(crq, vhost);
+ crq->valid = 0;
} else
done = 1;
}
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