Subject: [PATCH 01/20] PCI/sysfs: Use PCI resource accessor macros

From: Krzysztof Wilczyński <[email-masked]>
Date: Fri, 10 Apr 2026 05:50:21 +0000

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

No functional changes intended.

Signed-off-by: Krzysztof Wilczyński <[email-masked]>
---
 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);
-- 
2.53.0