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 --- scripts/include/xalloc.h | 53 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 scripts/include/xalloc.h (limited to 'scripts/include/xalloc.h') diff --git a/scripts/include/xalloc.h b/scripts/include/xalloc.h new file mode 100644 index 000000000..cdadb07d0 --- /dev/null +++ b/scripts/include/xalloc.h @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef XALLOC_H +#define XALLOC_H + +#include +#include + +static inline void *xmalloc(size_t size) +{ + void *p = malloc(size); + + if (!p) + exit(1); + return p; +} + +static inline void *xcalloc(size_t nmemb, size_t size) +{ + void *p = calloc(nmemb, size); + + if (!p) + exit(1); + return p; +} + +static inline void *xrealloc(void *p, size_t size) +{ + p = realloc(p, size); + if (!p) + exit(1); + return p; +} + +static inline char *xstrdup(const char *s) +{ + char *p = strdup(s); + + if (!p) + exit(1); + return p; +} + +static inline char *xstrndup(const char *s, size_t n) +{ + char *p = strndup(s, n); + + if (!p) + exit(1); + return p; +} + +#endif /* XALLOC_H */ -- cgit v1.3.1