From: Simon Horman <horms+renesas@xxxxxxxxxxxx>
Date: Thu, 26 Jan 2017 14:29:27 +0100
> From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@xxxxxxxxxxx>
>
> "swiotlb buffer is full" errors occur after repeated initialisation of a
> device - f.e. suspend/resume or ip link set up/down. This is because memory
> mapped using dma_map_single() in ravb_ring_format() and ravb_start_xmit()
> is not released. Resolve this problem by unmapping descriptors when
> freeing rings.
>
> Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper")
> Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@xxxxxxxxxxx>
> [simon: reworked]
> Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
Applied, thanks Simon.
