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SubjectRe: [PATCH] vhost: silence an unused-variable warning
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From: Arnd Bergmann <arnd@arndb.de>
Date: Wed, 6 Mar 2019 12:05:49 +0100

> On some architectures, the MMU can be disabled, leading to access_ok()
> becoming an empty macro that does not evaluate its size argument,
> which in turn produces an unused-variable warning:
>
> drivers/vhost/vhost.c:1191:9: error: unused variable 's' [-Werror,-Wunused-variable]
> size_t s = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0;
>
> Mark the variable as __maybe_unused to shut up that warning.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

I'll apply this, thanks Arnd.

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