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| author | Arnd Bergmann <arnd@arndb.de> | 2019-03-06 12:05:49 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-03-08 15:17:03 -0800 |
| commit | 81bf7bbeabd241326f4edc97f4f5ba366f21cbe0 (patch) | |
| tree | 718a0af2c130a4e8676ca569872f19ca98e632fc /drivers | |
| parent | 4c404ce23358d5d8fbdeb7a6021a9b33d3c3c167 (diff) | |
| download | linux-81bf7bbeabd241326f4edc97f4f5ba366f21cbe0.tar.bz2 | |
vhost: silence an unused-variable warning
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>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/vhost/vhost.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index a2e5dc7716e2..5ace833de746 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -1188,7 +1188,7 @@ static bool vq_access_ok(struct vhost_virtqueue *vq, unsigned int num, struct vring_used __user *used) { - size_t s = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0; + size_t s __maybe_unused = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0; return access_ok(desc, num * sizeof *desc) && access_ok(avail, |