patch "usb: core: usbport: fix "BUG: key not in .data" when lockdep is" added to usb-next

This is a note to let you know that I've just added the patch titled

usb: core: usbport: fix "BUG: key not in .data" when lockdep is

to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-next branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will also be merged in the next major kernel release during the merge window.

If you have any questions about this process, please let me know.

From: Christian Lamparter <[email protected]>
Date: Mon, 28 Aug 2017 19:11:15 +0200
Subject: usb: core: usbport: fix "BUG: key not in .data" when lockdep is
enabled

This patch fixes a splat that happens if CONFIG_DEBUG_LOCK_ALLOC is enabled and the ledtrig_usbport is loaded. (on a device that has some usb ports).

[   60.695479] BUG: key c53f8420 not in .data!
[   60.695521] ------------[ cut here ]------------
[   60.698542] WARNING: CPU: 1 PID: 854 at kernel/locking/lockdep.c:3134 __kernfs_create_file+0x5c/0xc0
[   60.703355] DEBUG_LOCKS_WARN_ON(1)
[   60.712534] Modules linked in:
[   60.944078] CPU: 1 PID: 854 Comm: S96led Not tainted 4.9.44 #0
[   60.944329] Hardware name: Generic DT based system
[   60.950106] [<c021585c>] (unwind_backtrace) from [<c0212150>] (show_stack+0x10/0x14)
[   60.954878] [<c0212150>] (show_stack) from [<c03a2bc4>] (dump_stack+0x7c/0x9c)
[   60.962772] [<c03a2bc4>] (dump_stack) from [<c021db34>] (__warn+0xbc/0xec)
[   60.969799] [<c021db34>] (__warn) from [<c021db98>] (warn_slowpath_fmt+0x34/0x44)
[   60.976656] [<c021db98>] (warn_slowpath_fmt)
[   60.984210] [<c0320688>] (__kernfs_create_file)
[   60.992712] [<c0320ef0>] (sysfs_add_file_mode_ns)
[   61.002090] [<c0321044>] (sysfs_add_file) from
[   61.010619] [<c0321094>] (sysfs_add_file_to_group)
[   61.019263] [<bf24a47c>] (usbport_trig_add_usb_dev_ports [ledtrig_usbport])
[   61.031002] [<c0430414>] (bus_for_each_dev)
[   61.042106] [<c0497dc4>] (usb_for_each_dev)
[   61.050375] [<bf24a2ac>] (usbport_trig_activate [ledtrig_usbport])
[   61.060685] [<c04e1708>] (led_trigger_set) from [<c04e1834>]

[...]

---
 drivers/usb/core/ledtrig-usbport.c | 1 +
 1 file changed, 1 insertion(+)

index 5e265882ad2a..1af877942110 100644
@@ -205,6 +205,7 @@ static int usbport_trig_add_port(struct usbport_trig_data *usbport_data,
 	}
 	snprintf(port->port_name, len, "%s-port%d", hub_name, portnum);
 
+	sysfs_attr_init(&port->attr.attr);
 	port->attr.attr.name = port->port_name;
 	port->attr.attr.mode = S_IRUSR | S_IWUSR;
 	port->attr.show = usbport_trig_port_show;

2.14.1