[Qemu-devel] [PATCH for-1.1] virtio-blk: Fix unused variables in virtio_blk_handle_scsi()

["Andreas Färber" <andreas.faerber@web.de>]

Commit f34e73cd69bdbdb9b1d56b288c5e14d6fff58165 (virtio-blk: report
non-zero status when failing SG_IO requests) exposed the function
to non-Linux guests. Move all Linux-only variable declarations into
an #ifdef in the variable declaration block.

Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/virtio-blk.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index f9e1896..a1b64cb 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -147,9 +147,12 @@ static VirtIOBlockReq *virtio_blk_get_request(VirtIOBlock *s)
 
 static void virtio_blk_handle_scsi(VirtIOBlockReq *req)
 {
-    int ret;
     int status = VIRTIO_BLK_S_OK;
+#ifdef __linux__
+    struct sg_io_hdr hdr;
+    int ret;
     int i;
+#endif
 
     /*
      * We require at least one output segment each for the virtio_blk_outhdr
@@ -184,7 +187,6 @@ static void virtio_blk_handle_scsi(VirtIOBlockReq *req)
     }
 
 #ifdef __linux__
-    struct sg_io_hdr hdr;
     memset(&hdr, 0, sizeof(struct sg_io_hdr));
     hdr.interface_id = 'S';
     hdr.cmd_len = req->elem.out_sg[1].iov_len;
-- 
1.7.5.3