PCI: Add pci_irq_type() to query the allocated interrupt typegrafted

Add a helper that returns PCI_IRQ_MSIX, PCI_IRQ_MSI, or PCI_IRQ_INTX
based on the interrupt type the PCI core selected after
pci_alloc_irq_vectors().

Several drivers already open-code this check against pdev->msix_enabled
and pdev->msi_enabled, or even open code this helper [1].

A common helper avoids the duplication and keeps drivers from accessing
the bitfield directly (see also [2]).

Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: John Hubbard <jhubbard@nvidia.com>
Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1]
Inspired-by: John Hubbard <jhubbard@nvidia.com>
Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2]
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260813165234.620555-5-dakr@kernel.org
[ Add missing pci_irq_type() stub for CONFIG_PCI=n. ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

1 files changed, 36 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/Makefile b/drivers/scsi/lpfc/Makefile
new file mode 100644
index 000000000..bbd1faf41
--- /dev/null
+++ b/drivers/scsi/lpfc/Makefile
@@ -0,0 +1,36 @@
+#/*******************************************************************
+# * This file is part of the Emulex Linux Device Driver for         *
+# * Fibre Channel Host Bus Adapters.                                *
+# * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term *
+# * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
+# * Copyright (C) 2004-2012 Emulex.  All rights reserved.           *
+# * EMULEX and SLI are trademarks of Emulex.                        *
+# * www.broadcom.com                                                *
+# *                                                                 *
+# * This program is free software; you can redistribute it and/or   *
+# * modify it under the terms of version 2 of the GNU General       *
+# * Public License as published by the Free Software Foundation.    *
+# * This program is distributed in the hope that it will be useful. *
+# * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
+# * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
+# * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
+# * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
+# * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
+# * more details, a copy of which can be found in the file COPYING  *
+# * included with this package.                                     *
+# *******************************************************************/
+######################################################################
+
+ccflags-$(GCOV) := -fprofile-arcs -ftest-coverage
+ccflags-$(GCOV) += -O0
+
+ifdef WARNINGS_BECOME_ERRORS
+ccflags-y += -Werror
+endif
+
+obj-$(CONFIG_SCSI_LPFC) := lpfc.o
+
+lpfc-objs := lpfc_mem.o lpfc_sli.o lpfc_ct.o lpfc_els.o \
+	lpfc_hbadisc.o	lpfc_init.o lpfc_mbox.o lpfc_nportdisc.o   \
+	lpfc_scsi.o lpfc_attr.o lpfc_vport.o lpfc_debugfs.o lpfc_bsg.o \
+	lpfc_nvme.o lpfc_nvmet.o lpfc_vmid.o