Re: [PATCH] selftests: txring_overwrite: fix incorrect test of mmap() return value

[David Miller]

From: Frank de Brabander <debraban...@gmail.com>
Date: Fri,  5 Jul 2019 13:43:14 +0200

> If mmap() fails it returns MAP_FAILED, which is defined as ((void *) -1).
> The current if-statement incorrectly tests if *ring is NULL.
> 
> Signed-off-by: Frank de Brabander <debraban...@gmail.com>

Applied with fixes tag added and queued up for -stable, thanks.