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, 19 insertions, 0 deletions

diff --git a/Documentation/crypto/libcrypto-blockcipher.rst b/Documentation/crypto/libcrypto-blockcipher.rst
new file mode 100644
index 000000000..fd85e27fa
--- /dev/null
+++ b/Documentation/crypto/libcrypto-blockcipher.rst
@@ -0,0 +1,19 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+Block ciphers
+=============
+
+AES
+---
+
+This API provides support for the AES block cipher.
+
+.. kernel-doc:: include/crypto/aes.h
+
+DES
+---
+
+This API provides support for the DES block cipher.  This algorithm is obsolete
+and is supported only for backwards compatibility.
+
+.. kernel-doc:: include/crypto/des.h