Re: [PATCH 52/56] drivers/char/virtio: support compiling out splice

Compile out splice support from virtio character driver when the splice-family
of syscalls is not supported by the system (i.e. CONFIG_SYSCALL_SPLICE is
undefined).

Signed-off-by: Pieter Smith <redacted>
---
 drivers/char/virtio_console.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index b585b47..de5e2cb 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c

@@ -870,6 +870,7 @@ struct sg_list {
 	struct scatterlist *sg;
 };
 
+#ifdef CONFIG_SYSCALL_SPLICE
 static int pipe_to_sg(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
 			struct splice_desc *sd)
 {

@@ -976,6 +977,7 @@ error_out:
 	pipe_unlock(pipe);
 	return ret;
 }
+#endif /* #ifdef CONFIG_SYSCALL_SPLICE */