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path: root/drivers/scsi/aacraid/commsup.c
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Diffstat (limited to 'drivers/scsi/aacraid/commsup.c')
-rw-r--r--drivers/scsi/aacraid/commsup.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 5322865942e2..a1d303f03480 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -254,6 +254,7 @@ static void fib_dealloc(struct fib * fibptr)
static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify)
{
struct aac_queue * q;
+ unsigned long idx;
/*
* All of the queues wrap when they reach the end, so we check
@@ -263,10 +264,23 @@ static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entr
*/
q = &dev->queues->queue[qid];
-
- *index = le32_to_cpu(*(q->headers.producer));
- if ((*index - 2) == le32_to_cpu(*(q->headers.consumer)))
+
+ idx = *index = le32_to_cpu(*(q->headers.producer));
+ /* Interrupt Moderation, only interrupt for first two entries */
+ if (idx != le32_to_cpu(*(q->headers.consumer))) {
+ if (--idx == 0) {
+ if (qid == AdapHighCmdQueue)
+ idx = ADAP_HIGH_CMD_ENTRIES;
+ else if (qid == AdapNormCmdQueue)
+ idx = ADAP_NORM_CMD_ENTRIES;
+ else if (qid == AdapHighRespQueue)
+ idx = ADAP_HIGH_RESP_ENTRIES;
+ else if (qid == AdapNormRespQueue)
+ idx = ADAP_NORM_RESP_ENTRIES;
+ }
+ if (idx != le32_to_cpu(*(q->headers.consumer)))
*nonotify = 1;
+ }
if (qid == AdapHighCmdQueue) {
if (*index >= ADAP_HIGH_CMD_ENTRIES)