[PATCH v6 01/24] PCI/sysfs: Use PCI resource accessor macros

Krzysztof Wilczyński
2026-04-22T16:14:28Z

Replace direct pdev->resource[] accesses with pci_resource_n(),
and pdev->resource[].flags accesses with pci_resource_flags().

No functional changes intended.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
---
drivers/pci/pci-sysfs.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 16eaaf749ba9..ad3c17f86c7f 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -177,7 +177,7 @@ static ssize_t resource_show(struct device *dev, struct device_attribute *attr,
max = PCI_BRIDGE_RESOURCES;

for (i = 0; i < max; i++) {
- struct resource *res = &pci_dev->resource[i];
+ struct resource *res = pci_resource_n(pci_dev, i);
struct resource zerores = {};

/* For backwards compatibility */
@@ -715,7 +715,7 @@ static ssize_t boot_vga_show(struct device *dev, struct device_attribute *attr,
return sysfs_emit(buf, "%u\n", (pdev == vga_dev));

return sysfs_emit(buf, "%u\n",
- !!(pdev->resource[PCI_ROM_RESOURCE].flags &
+ !!(pci_resource_flags(pdev, PCI_ROM_RESOURCE) &
IORESOURCE_ROM_SHADOW));
}
static DEVICE_ATTR_RO(boot_vga);
@@ -1108,7 +1108,7 @@ static int pci_mmap_resource(struct kobject *kobj, const struct bin_attribute *a
struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
int bar = (unsigned long)attr->private;
enum pci_mmap_state mmap_type;
- struct resource *res = &pdev->resource[bar];
+ struct resource *res = pci_resource_n(pdev, bar);
int ret;

ret = security_locked_down(LOCKDOWN_PCI_ACCESS);
@@ -1312,7 +1312,7 @@ static int pci_create_resource_files(struct pci_dev *pdev)
retval = pci_create_attr(pdev, i, 0);
/* for prefetchable resources, create a WC mappable file */
if (!retval && arch_can_pci_mmap_wc() &&
- pdev->resource[i].flags & IORESOURCE_PREFETCH)
+ pci_resource_flags(pdev, i) & IORESOURCE_PREFETCH)
retval = pci_create_attr(pdev, i, 1);
if (retval) {
pci_remove_resource_files(pdev);
--
2.54.0