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Commit 70237dc8 authored by Peter Chen's avatar Peter Chen Committed by Felipe Balbi
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usb: gadget: function: f_eem: socket buffer may be NULL 



In eth_start_xmit, the socket buffer may be NULL. So, add NULL pointer
check at .wrap API.

Signed-off-by: default avatarPeter Chen <peter.chen@nxp.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 3295235f

drivers/usb/gadget/function/f_eem.c

+7 −3
Original line number Diff line number Diff line
@@ -341,11 +341,15 @@ static struct sk_buff *eem_wrap(struct gether *port, struct sk_buff *skb) 
{

	struct sk_buff	*skb2 = NULL;

	struct usb_ep	*in = port->in_ep;

	int		padlen = 0;

	int		headroom, tailroom, padlen = 0;

	u16		len = skb->len;



	int headroom = skb_headroom(skb);

	int tailroom = skb_tailroom(skb);

	if (!skb)

		return NULL;



	len = skb->len;

	headroom = skb_headroom(skb);

	tailroom = skb_tailroom(skb);



	/* When (len + EEM_HLEN + ETH_FCS_LEN) % in->maxpacket) is 0,

	 * stick two bytes of zero-length EEM packet on the end.