USB: add the usbfs devices file to debugfs (97d7b7a4) · Commits · 戴 / test

drivers/usb/core/Makefile

+2 −2

Original line number	Diff line number	Diff line
		@@ -4,14 +4,14 @@

		usbcore-objs := usb.o hub.o hcd.o urb.o message.o driver.o \
		config.o file.o buffer.o sysfs.o endpoint.o \
		devio.o notify.o generic.o quirks.o
		devio.o notify.o generic.o quirks.o devices.o

		ifeq ($(CONFIG_PCI),y)
		usbcore-objs += hcd-pci.o
		endif

		ifeq ($(CONFIG_USB_DEVICEFS),y)
		usbcore-objs += inode.o devices.o
		usbcore-objs += inode.o
		endif

		obj-$(CONFIG_USB) += usbcore.o

+13 −0

Original line number	Diff line number	Diff line
		@@ -1005,16 +1005,29 @@ static struct notifier_block usb_bus_nb = {
		struct dentry *usb_debug_root;
		EXPORT_SYMBOL_GPL(usb_debug_root);

		struct dentry *usb_debug_devices;

		static int usb_debugfs_init(void)
		{
		usb_debug_root = debugfs_create_dir("usb", NULL);
		if (!usb_debug_root)
		return -ENOENT;

		usb_debug_devices = debugfs_create_file("devices", 0444,
		usb_debug_root, NULL,
		&usbfs_devices_fops);
		if (!usb_debug_devices) {
		debugfs_remove(usb_debug_root);
		usb_debug_root = NULL;
		return -ENOENT;
		}

		return 0;
		}

		static void usb_debugfs_cleanup(void)
		{
		debugfs_remove(usb_debug_devices);
		debugfs_remove(usb_debug_root);
		}