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, 25 insertions, 0 deletions

diff --git a/arch/mips/Kbuild b/arch/mips/Kbuild
new file mode 100644
index 000000000..e901bf554
--- /dev/null
+++ b/arch/mips/Kbuild
@@ -0,0 +1,25 @@
+# SPDX-License-Identifier: GPL-2.0
+
+# platform specific definitions
+include $(srctree)/arch/mips/Kbuild.platforms
+obj-y := $(platform-y)
+
+# make clean traverses $(obj-) without having included .config, so
+# everything ends up here
+obj- := $(platform-y)
+
+# mips object files
+# The object files are linked as core-y files would be linked
+
+obj-y += generic/
+obj-y += kernel/
+obj-y += mm/
+obj-y += net/
+obj-y += vdso/
+
+ifdef CONFIG_KVM
+obj-y += kvm/
+endif
+
+# for cleaning
+subdir- += boot