From: Kazuya Mizuguchi <kazuya.mizuguchi...@renesas.com>
This patch fixes an issue that the NULL pointer dereference happens
when we uses g_audio driver. Since the g_audio driver will call
usb_ep_disable() in afunc_set_alt() before it calls usb_ep_enable(),
the uep->pipe of renesas usbhs driver will be NULL. So, this patch
adds a condition to avoid the oops.
Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi...@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara...@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda...@renesas.com>
Cc: <sta...@vger.kernel.org>
---
drivers/usb/renesas_usbhs/mod_gadget.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c
b/drivers/usb/renesas_usbhs/mod_gadget.c
index 2d17c10..2d0903f 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -602,6 +602,9 @@ static int usbhsg_ep_disable(struct usb_ep *ep)
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ if (!uep || !uep->pipe)
+ return -EINVAL;
+
usbhsg_pipe_disable(uep);
usbhs_pipe_free(pipe);
--
1.7.9.5
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