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USB: core: no need to save usb_devices_root

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There is no need to save the usb_devices debugfs file as we only need it
when removing it, so have the debugfs code look it up when it is needed
instead, saving the storage.

Link: https://lore.kernel.org/r/YCubCA/trHAF7PtF@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2021-02-16 11:14:32 +01:00
parent 70be046404
commit 9c174b57c9
1 changed files with 3 additions and 5 deletions
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8
drivers/usb/core/usb.c
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@ -950,17 +950,15 @@ static struct notifier_block usb_bus_nb = {
.notifier_call = usb_bus_notify,
};
static struct dentry *usb_devices_root;
static void usb_debugfs_init(void)
{
usb_devices_root = debugfs_create_file("devices", 0444, usb_debug_root,
NULL, &usbfs_devices_fops);
debugfs_create_file("devices", 0444, usb_debug_root, NULL,
&usbfs_devices_fops);
}
static void usb_debugfs_cleanup(void)
{
debugfs_remove(usb_devices_root);
debugfs_remove(debugfs_lookup("devices", usb_debug_root));
}
/*