[PATCH 4.9 079/171] usb: renesas_usbhs: gadget: fix spin_lock_init() for &uep->lock

Greg Kroah-Hartman
2018-11-08T22:06:01Z

[ Upstream commit 14a8d4bfc2102f85ce097563d151370c91c1898a ]

This patch fixes an issue that the spin_lock_init() is not called
for almost all pipes. Otherwise, the lockdep output the following
message when we connect a usb cable using g_ncm:

INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.

Reported-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Fixes: b8b9c974afee ("usb: renesas_usbhs: gadget: disable all eps when the driver stops")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/usb/renesas_usbhs/mod_gadget.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index 93fba9033b00..54a3237aac08 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -1085,7 +1085,6 @@ int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
ret = -ENOMEM;
goto usbhs_mod_gadget_probe_err_gpriv;
}
- spin_lock_init(&uep->lock);

gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED);
dev_info(dev, "%stransceiver found\n",
@@ -1135,6 +1134,7 @@ int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
uep->ep.name = uep->ep_name;
uep->ep.ops = &usbhsg_ep_ops;
INIT_LIST_HEAD(&uep->ep.ep_list);
+ spin_lock_init(&uep->lock);

/* init DCP */
if (usbhsg_is_dcp(uep)) {
--
2.17.1