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authorJan Beulich <jbeulich@suse.com>2021-03-10 13:45:26 +0300
committerBoris Ostrovsky <boris.ostrovsky@oracle.com>2021-03-11 01:39:29 +0300
commitbce21a2b48ede7cbcab92db18bc956daf1d5c246 (patch)
tree08be73916964bc77f11d9860b30041b797fa1ce3 /drivers/pci/xen-pcifront.c
parent36caa3fedf06d377bd08bc91b50c93fb9022f5ec (diff)
downloadlinux-bce21a2b48ede7cbcab92db18bc956daf1d5c246.tar.xz
Xen/gnttab: introduce common INVALID_GRANT_{HANDLE,REF}
It's not helpful if every driver has to cook its own. Generalize xenbus'es INVALID_GRANT_HANDLE and pcifront's INVALID_GRANT_REF (which shouldn't have expanded to zero to begin with). Use the constants in p2m.c and gntdev.c right away, and update field types where necessary so they would match with the constants' types (albeit without touching struct ioctl_gntdev_grant_ref's ref field, as that's part of the public interface of the kernel and would require introducing a dependency on Xen's grant_table.h public header). Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Juergen Gross <jgross@suse.com> Link: https://lore.kernel.org/r/db7c38a5-0d75-d5d1-19de-e5fe9f0b9c48@suse.com Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/pci/xen-pcifront.c')
-rw-r--r--drivers/pci/xen-pcifront.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index c6fe0cfec0f6..2d7502648219 100644
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -26,7 +26,7 @@
#include <xen/platform_pci.h>
#include <asm/xen/swiotlb-xen.h>
-#define INVALID_GRANT_REF (0)
+
#define INVALID_EVTCHN (-1)
struct pci_bus_entry {
@@ -42,7 +42,7 @@ struct pcifront_device {
struct list_head root_buses;
int evtchn;
- int gnt_ref;
+ grant_ref_t gnt_ref;
int irq;