3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@xxxxxxxxxxx> commit 11432050f070810ba139d0226344eef120c3a559 upstream. 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.ks@xxxxxxxxxxx> Signed-off-by: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> Fixes: 2f98382dc (usb: renesas_usbhs: Add Renesas USBHS Gadget) Signed-off-by: Felipe Balbi <balbi@xxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/usb/renesas_usbhs/mod_gadget.c | 3 +++ 1 file changed, 3 insertions(+) --- 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_ 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); -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html