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, 26 insertions, 0 deletions

diff --git a/scripts/Lindent b/scripts/Lindent
new file mode 100755
index 000000000..1688c44c2
--- /dev/null
+++ b/scripts/Lindent
@@ -0,0 +1,26 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+PARAM="-npro -kr -i8 -ts8 -sob -l80 -ss -ncs -cp1"
+
+RES=`indent --version | cut -d' ' -f3`
+if [ "$RES" = "" ]; then
+	exit 1
+fi
+V1=`echo $RES | cut -d'.' -f1`
+V2=`echo $RES | cut -d'.' -f2`
+V3=`echo $RES | cut -d'.' -f3`
+
+if [ $V1 -gt 2 ]; then
+  PARAM="$PARAM -il0"
+elif [ $V1 -eq 2 ]; then
+  if [ $V2 -gt 2 ]; then
+    PARAM="$PARAM -il0"
+  elif [ $V2 -eq 2 ]; then
+    if [ $V3 -ge 10 ]; then
+      PARAM="$PARAM -il0"
+    fi
+  fi
+fi
+
+indent $PARAM "$@"