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scsi: lpfc: Break out of IRQ affinity assignment when mask reaches nr_cpu_ids

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The purpose of the lpfc_next_online_cpu() call is to save the CPU index for
the next iteration of the for (index = 0; index < vectors; index++) loop.
Because we’ve reached the last iteration of the loop, cpumask_next(cpu,
aff_mask) returns nr_cpu_ids.  Thus, if we already know we've reached the
last iteration of the IRQ affinity assignment loop, then we can just break
and exit.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://patch.msgid.link/20260331205928.119833-2-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Justin Tee 2026-03-31 13:59:19 -07:00 committed by Martin K. Petersen
parent 6446e8c2b6
commit e32b5e8f09
1 changed files with 5 additions and 1 deletions
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6
drivers/scsi/lpfc/lpfc_init.c
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@ -2,7 +2,7 @@
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2017-2026 Broadcom. All Rights Reserved. The term *
* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
* Copyright (C) 2004-2016 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.broadcom.com *
@ -13041,6 +13041,10 @@ lpfc_sli4_enable_msix(struct lpfc_hba *phba)
/* Iterate to next offline or online cpu in aff_mask */
cpu = cpumask_next(cpu, aff_mask);
/* Reached the end of the aff_mask */
if (cpu >= nr_cpu_ids)
break;
/* Find next online cpu in aff_mask to set affinity */
cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
} else if (vectors == 1) {