Merge tag 'backlight-next-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee...

[linux.git] / drivers / pci / pci-sysfs.c

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 868e351092844f8bf63f3c730cf50226833efea7..7934129545290480b573f03976e8d5e5e220ef01 100644 (file)
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -755,6 +755,11 @@ static ssize_t pci_write_config(struct file *filp, struct kobject *kobj,
        unsigned int size = count;
        loff_t init_off = off;
        u8 *data = (u8 *) buf;
+       int ret;
+
+       ret = security_locked_down(LOCKDOWN_PCI_ACCESS);
+       if (ret)
+               return ret;
 
        if (off > dev->cfg_size)
                return 0;
@@ -1016,6 +1021,11 @@ static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
        int bar = (unsigned long)attr->private;
        enum pci_mmap_state mmap_type;
        struct resource *res = &pdev->resource[bar];
+       int ret;
+
+       ret = security_locked_down(LOCKDOWN_PCI_ACCESS);
+       if (ret)
+               return ret;
 
        if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(res->start))
                return -EINVAL;
@@ -1092,6 +1102,12 @@ static ssize_t pci_write_resource_io(struct file *filp, struct kobject *kobj,
                                     struct bin_attribute *attr, char *buf,
                                     loff_t off, size_t count)
 {
+       int ret;
+
+       ret = security_locked_down(LOCKDOWN_PCI_ACCESS);
+       if (ret)
+               return ret;
+
        return pci_resource_io(filp, kobj, attr, buf, off, count, true);
 }