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usb: gadget: u_ether: fix another dereference after null check

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dev->port_usb is checked for null pointer previously, so dev->port_usb
might be null during no zlp check, fix it by adding null pointer check.

Acked-by: Jim Baxter <jim_baxter@mentor.com>
Signed-off-by: Harish Jenny K N <harish_kandiga@mentor.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Harish Jenny K N 2016-09-09 11:30:41 +02:00 committed by Felipe Balbi
parent 5387c92037
commit 79775f4418
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/gadget/function/u_ether.c
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@ -571,7 +571,8 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb,
req->complete = tx_complete;
/* NCM requires no zlp if transfer is dwNtbInMaxSize */
if (dev->port_usb->is_fixed &&
if (dev->port_usb &&
dev->port_usb->is_fixed &&
length == dev->port_usb->fixed_in_len &&
(length % in->maxpacket) == 0)
req->zero = 0;