[ldv-project] [PATCH v2] natsemi: add checks for dma mapping errors

[David Miller]

From: Alexey Khoroshilov <khoroshilov at ispras.ru>
Date: Sat, 19 Dec 2015 15:13:49 +0300

> refill_rx() and start_tx() do not check if mapping dma memory succeed.
> The patch adds the checks and failure handling.
> 
> Found by Linux Driver Verification project (linuxtesting.org).
> 
> Signed-off-by: Alexey Khoroshilov <khoroshilov at ispras.ru>

Applied, thanks.