alpha: use kobj_to_dev()

Use kobj_to_dev() instead of open-coding it.

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>

diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c
index 652449e..cbecd52 100644 (file)
--- a/arch/alpha/kernel/pci-sysfs.c
+++ b/arch/alpha/kernel/pci-sysfs.c
@@ -64,8 +64,7 @@ static int pci_mmap_resource(struct kobject *kobj,
                             struct bin_attribute *attr,
                             struct vm_area_struct *vma, int sparse)
 {
-       struct pci_dev *pdev = to_pci_dev(container_of(kobj,
-                                                      struct device, kobj));
+       struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
        struct resource *res = attr->private;
        enum pci_mmap_state mmap_type;
        struct pci_bus_region bar;