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virtio: teach virtio_has_feature() about transport features 

Drivers don't add transport features to their table, so we
shouldn't check these with virtio_check_driver_offered_feature().

We could perhaps add an ->offered_feature() virtio_config_op,
but that perhaps that would be overkill for a consitency check
like this.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Mark McLoughlin 2009-05-11 18:11:44 +01:00 committed by Rusty Russell
parent a92892825a
commit ee006b353f
1 changed files with 3 additions and 1 deletions
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4
include/linux/virtio_config.h
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@ -113,7 +113,9 @@ static inline bool virtio_has_feature(const struct virtio_device *vdev,
if (__builtin_constant_p(fbit))
BUILD_BUG_ON(fbit >= 32);
virtio_check_driver_offered_feature(vdev, fbit);
if (fbit < VIRTIO_TRANSPORT_F_START)
virtio_check_driver_offered_feature(vdev, fbit);
return test_bit(fbit, vdev->features);
}