summaryrefslogtreecommitdiff
path: root/drivers/xen
diff options
context:
space:
mode:
authorJuergen Gross <jgross@suse.com>2022-04-28 10:01:03 +0300
committerJuergen Gross <jgross@suse.com>2022-05-19 15:21:48 +0300
commitbd506c781207a52b0e212818d312d22e64db5cff (patch)
tree8a0fb94cdb2a666fd974ddf725e192340b4cefa3 /drivers/xen
parent297ce02669676517d2bfaa57995007b989d88524 (diff)
downloadlinux-bd506c781207a52b0e212818d312d22e64db5cff.tar.xz
xen/dmabuf: switch gntdev-dmabuf to use INVALID_GRANT_REF
Instead of using a private macro for an invalid grant reference use the common one. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/gntdev-dmabuf.c13
1 files changed, 2 insertions, 11 deletions
diff --git a/drivers/xen/gntdev-dmabuf.c b/drivers/xen/gntdev-dmabuf.c
index d5bfd7b867fc..91073b4e4a20 100644
--- a/drivers/xen/gntdev-dmabuf.c
+++ b/drivers/xen/gntdev-dmabuf.c
@@ -24,15 +24,6 @@
MODULE_IMPORT_NS(DMA_BUF);
-#ifndef GRANT_INVALID_REF
-/*
- * Note on usage of grant reference 0 as invalid grant reference:
- * grant reference 0 is valid, but never exposed to a driver,
- * because of the fact it is already in use/reserved by the PV console.
- */
-#define GRANT_INVALID_REF 0
-#endif
-
struct gntdev_dmabuf {
struct gntdev_dmabuf_priv *priv;
struct dma_buf *dmabuf;
@@ -532,7 +523,7 @@ static void dmabuf_imp_end_foreign_access(u32 *refs, int count)
int i;
for (i = 0; i < count; i++)
- if (refs[i] != GRANT_INVALID_REF)
+ if (refs[i] != INVALID_GRANT_REF)
gnttab_end_foreign_access(refs[i], 0UL);
}
@@ -567,7 +558,7 @@ static struct gntdev_dmabuf *dmabuf_imp_alloc_storage(int count)
gntdev_dmabuf->nr_pages = count;
for (i = 0; i < count; i++)
- gntdev_dmabuf->u.imp.refs[i] = GRANT_INVALID_REF;
+ gntdev_dmabuf->u.imp.refs[i] = INVALID_GRANT_REF;
return gntdev_dmabuf;