From: Quinn Tran <qutran@marvell.com>
Date: Wed, 2 Dec 2020 05:23:00 -0800
Subject: scsi: qla2xxx: Limit interrupt vectors to number of CPUs
Patch-mainline: v5.11-rc1
Git-commit: a6dcfe08487e5e83b6b4214c959a9577a9ed2d9f
References: bsc#1172538 bsc#1179142 bsc#1179810
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>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
drivers/scsi/qla2xxx/qla_isr.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -3954,10 +3954,12 @@ qla24xx_enable_msix(struct qla_hw_data *
!shost_use_blk_mq(vha->host)) {
/* 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) {