From a6dcfe08487e5e83b6b4214c959a9577a9ed2d9f Mon Sep 17 00:00:00 2001
From: Quinn Tran <qutran@marvell.com>
Date: Wed, 2 Dec 2020 05:23:00 -0800
Subject: [PATCH] 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>
---
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 a24b82de4aab7..77dd7630c3f8a 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) {
--
2.30.2