[PATCH 2/5] PCI, sys: Use is_visable() with boot_vga attribute for pci_dev

Yinghai Lu
2012-10-03T17:52:05Z

That could let pci_create_sysfs_dev_files more simple.

also fix possible fix memleak during removing path.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
drivers/pci/pci-sysfs.c | 21 ++++++++++-----------
1 files changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 3d160aa..fbbb97f 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -1303,29 +1303,20 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
pdev->rom_attr = attr;
}

- if ((pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA) {
- retval = device_create_file(&pdev->dev, &vga_attr);
- if (retval)
- goto err_rom_file;
- }
-
/* add platform-specific attributes */
retval = pcibios_add_platform_entries(pdev);
if (retval)
- goto err_vga_file;
+ goto err_rom_file;

/* add sysfs entries for various capabilities */
retval = pci_create_capabilities_sysfs(pdev);
if (retval)
- goto err_vga_file;
+ goto err_rom_file;

pci_create_firmware_label_files(pdev);

return 0;

-err_vga_file:
- if ((pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA)
- device_remove_file(&pdev->dev, &vga_attr);
err_rom_file:
if (rom_size) {
sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
@@ -1413,12 +1404,20 @@ static int __init pci_sysfs_init(void)
late_initcall(pci_sysfs_init);

static struct attribute *pci_dev_dev_attrs[] = {
+ &vga_attr.attr,
NULL,
};

static umode_t pci_dev_attrs_are_visible(struct kobject *kobj,
struct attribute *a, int n)
{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct pci_dev *pdev = to_pci_dev(dev);
+
+ if (a == &vga_attr.attr)
+ if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
+ return 0;
+
return a->mode;
}

--
1.7.7