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virtio_config: add virtio_cread_le_feature

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Mirrors virtio_cread_feature but for LE fields.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2020-08-05 09:17:38 -04:00
parent e3e7994d53
commit 035ce4210b
1 changed files with 10 additions and 0 deletions
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10
include/linux/virtio_config.h
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@ -555,4 +555,14 @@ static inline void virtio_cwrite64(struct virtio_device *vdev,
_r; \
})
/* Conditional config space accessors. */
#define virtio_cread_le_feature(vdev, fbit, structname, member, ptr) \
({ \
int _r = 0; \
if (!virtio_has_feature(vdev, fbit)) \
_r = -ENOENT; \
else \
virtio_cread_le((vdev), structname, member, ptr); \
_r; \
})
#endif /* _LINUX_VIRTIO_CONFIG_H */