Re: [PATCH v2] net: arc_emac: fix arc_emac_rx() error paths

From: David Miller
Date: Tue Dec 19 2017 - 13:26:36 EST

From: Alexander Kochetkov <al.kochet@xxxxxxxxx>
Date: Tue, 19 Dec 2017 14:07:04 +0300

> arc_emac_rx() has some issues found by code review.
> In case netdev_alloc_skb_ip_align() or dma_map_single() failure
> rx fifo entry will not be returned to EMAC.
> In case dma_map_single() failure previously allocated skb became
> lost to driver. At the same time address of newly allocated skb
> will not be provided to EMAC.
> Signed-off-by: Alexander Kochetkov <al.kochet@xxxxxxxxx>