Commit 11432050 authored by Kazuya Mizuguchi's avatar Kazuya Mizuguchi Committed by Felipe Balbi

usb: renesas_usbhs: gadget: fix NULL pointer dereference in ep_disable()

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: default avatarKazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: default avatarTakeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Fixes: 2f98382d (usb: renesas_usbhs: Add Renesas USBHS Gadget)
Cc: <stable@vger.kernel.org> # v3.0+
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent c3761a79
......@@ -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 (!pipe)
return -EINVAL;
usbhsg_pipe_disable(uep);
usbhs_pipe_free(pipe);
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment