From: Sui Jingfeng <suijingfeng@loongson.cn>
Date: Wed, 30 Aug 2023 11:15:30 +0000 (+0800)
Subject: PCI/sysfs: Enable 'boot_vga' attribute via pci_is_vga()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=cdd3cecb521520ff316eea5ee36608b63a8df9f9;p=linux.git

PCI/sysfs: Enable 'boot_vga' attribute via pci_is_vga()

Enable the 'boot_vga' sysfs attribute via pci_is_vga().

This exposes 'boot_vga' for old PCI_CLASS_NOT_DEFINED_VGA (0x0001) devices
as well as for the PCI_CLASS_DISPLAY_VGA (0x0300) devices where it was
previously exposed.

Link: https://lore.kernel.org/r/20230830111532.444535-4-sui.jingfeng@linux.dev
Signed-off-by: Sui Jingfeng <suijingfeng@loongson.cn>
[bhelgaas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: "Maciej W. Rozycki" <macro@orcam.me.uk>
---

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index d9eede2dbc0e1..252ee29fd6978 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -1551,11 +1551,10 @@ static umode_t pci_dev_attrs_are_visible(struct kobject *kobj,
 	struct device *dev = kobj_to_dev(kobj);
 	struct pci_dev *pdev = to_pci_dev(dev);
 
-	if (a == &dev_attr_boot_vga.attr)
-		if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
-			return 0;
+	if (a == &dev_attr_boot_vga.attr && pci_is_vga(pdev))
+		return a->mode;
 
-	return a->mode;
+	return 0;
 }
 
 static struct attribute *pci_dev_hp_attrs[] = {