[PATCH v2 03/15] qla2xxx: limit interrupt vectors to number of cpu

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From: Quinn Tran <qutran@xxxxxxxxxxx>

Driver created too many QPairs(126) with 28xx adapter.
Limit the number of CPUs to lower wasted resources.

Signed-off-by: Quinn Tran <qutran@xxxxxxxxxxx>
Signed-off-by: Nilesh Javali <njavali@xxxxxxxxxxx>
Reviewed-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
---
 drivers/scsi/qla2xxx/qla_isr.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index a24b82de4aab..77dd7630c3f8 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -3952,10 +3952,12 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
 	if (USER_CTRL_IRQ(ha) || !ha->mqiobase) {
 		/* user wants to control IRQ setting for target mode */
 		ret = pci_alloc_irq_vectors(ha->pdev, min_vecs,
-		    ha->msix_count, PCI_IRQ_MSIX);
+		    min((u16)ha->msix_count, (u16)num_online_cpus()),
+		    PCI_IRQ_MSIX);
 	} else
 		ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
-		    ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
+		    min((u16)ha->msix_count, (u16)num_online_cpus()),
+		    PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
 		    &desc);
 
 	if (ret < 0) {
-- 
2.19.0.rc0




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