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Commit b3683dee authored by Jason Wang's avatar Jason Wang Committed by Michael S. Tsirkin
Browse files

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: default avatarJason Wang <jasowang@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 67715961

drivers/vhost/vringh.c

+7 −1
Original line number Diff line number Diff line
@@ -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);