From f146c7bc85a51f95c05e0f8173d484eb301ece78 Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Thu, 13 Aug 2026 18:52:04 +0200 Subject: PCI: Add pci_irq_type() to query the allocated interrupt type 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 Tested-by: John Hubbard Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1] Inspired-by: John Hubbard Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2] Reviewed-by: Gary Guo 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 --- drivers/scsi/scsi_sysctl.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 drivers/scsi/scsi_sysctl.c (limited to 'drivers/scsi/scsi_sysctl.c') diff --git a/drivers/scsi/scsi_sysctl.c b/drivers/scsi/scsi_sysctl.c new file mode 100644 index 000000000..055a03a83 --- /dev/null +++ b/drivers/scsi/scsi_sysctl.c @@ -0,0 +1,38 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2003 Christoph Hellwig. + */ + +#include +#include +#include +#include + +#include "scsi_logging.h" +#include "scsi_priv.h" + + +static const struct ctl_table scsi_table[] = { + { .procname = "logging_level", + .data = &scsi_logging_level, + .maxlen = sizeof(scsi_logging_level), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_INT_MAX }, +}; + +static struct ctl_table_header *scsi_table_header; + +int __init scsi_init_sysctl(void) +{ + scsi_table_header = register_sysctl("dev/scsi", scsi_table); + if (!scsi_table_header) + return -ENOMEM; + return 0; +} + +void scsi_exit_sysctl(void) +{ + unregister_sysctl_table(scsi_table_header); +} -- cgit v1.3.1