projects
/
platform
/
kernel
/
linux-starfive.git
/ commitdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
| commitdiff |
tree
raw
|
patch
| inline |
side by side
(parent:
e3e7994
)
virtio_config: add virtio_cread_le_feature
author
Michael S. Tsirkin
<mst@redhat.com>
Wed, 5 Aug 2020 13:17:38 +0000
(09:17 -0400)
committer
Michael S. Tsirkin
<mst@redhat.com>
Wed, 5 Aug 2020 15:08:41 +0000
(11:08 -0400)
Mirrors virtio_cread_feature but for LE fields.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
include/linux/virtio_config.h
patch
|
blob
|
history
diff --git
a/include/linux/virtio_config.h
b/include/linux/virtio_config.h
index
5b5196f
..
cc7a2b1
100644
(file)
--- a/
include/linux/virtio_config.h
+++ b/
include/linux/virtio_config.h
@@
-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 */