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authorJason Wang <jasowang@redhat.com>2019-10-24 11:57:18 +0800
committerMichael S. Tsirkin <mst@redhat.com>2019-10-28 04:25:04 -0400
commitb3683dee840274e9997d958b9d82e5de95950f0b (patch)
treefbb7bcc9bbe581c12aab4026e53e685458187af3 /drivers/vhost
parent6771596169bf585d8d7218f1dc5eb7c2d2663275 (diff)
vringh: fix copy direction of vringh_iov_push_kern()
We want to copy from iov to buf, so the direction was wrong. Note: no real user for the helper, but it will be used by future features. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost')
-rw-r--r--drivers/vhost/vringh.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
index 08ad0d1f0476..a0a2d74967ef 100644
--- a/drivers/vhost/vringh.c
+++ b/drivers/vhost/vringh.c
@@ -852,6 +852,12 @@ static inline int xfer_kern(void *src, void *dst, size_t len)
return 0;
}
+static inline int kern_xfer(void *dst, void *src, size_t len)
+{
+ memcpy(dst, src, len);
+ return 0;
+}
+
/**
* vringh_init_kern - initialize a vringh for a kernelspace vring.
* @vrh: the vringh to initialize.
@@ -958,7 +964,7 @@ EXPORT_SYMBOL(vringh_iov_pull_kern);
ssize_t vringh_iov_push_kern(struct vringh_kiov *wiov,
const void *src, size_t len)
{
- return vringh_iov_xfer(wiov, (void *)src, len, xfer_kern);
+ return vringh_iov_xfer(wiov, (void *)src, len, kern_xfer);
}
EXPORT_SYMBOL(vringh_iov_push_kern);