virtio: use u32, not bitmap for features

It seemed like a good idea to use bitmap for features
in struct virtio_device, but it's actually a pain,
and seems to become even more painful when we get more
than 32 feature bits.  Just change it to a u32 for now.

Based on patch by Rusty.

Suggested-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/misc/mic/card/mic_virtio.c b/drivers/misc/mic/card/mic_virtio.c
index e64794730e21..4f070ad1875c 100644
--- a/drivers/misc/mic/card/mic_virtio.c
+++ b/drivers/misc/mic/card/mic_virtio.c
@@ -101,7 +101,7 @@ static void mic_finalize_features(struct virtio_device *vdev)
         bits = min_t(unsigned, feature_len,
                 sizeof(vdev->features)) * 8;
         for (i = 0; i < bits; i++) {
-                if (test_bit(i, vdev->features))
+                if (__virtio_test_bit(vdev, i))
                         iowrite8(ioread8(&out_features[i / 8]) | (1 << (i % 8)),
                                  &out_features[i / 8]);
         }