scsi: qla2xxx: Limit interrupt vectors to number of CPUs

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

Link: https://lore.kernel.org/r/20201202132312.19966-4-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index a24b82de4aab7f7ee808ecd1a686dc73d0f74ed7..77dd7630c3f8ab5bc3a8b9a70255e01f8727cc3c 100644 (file)
--- 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) {