drm/xe: Use a define to set initial seqno for fences

Also for HW fences, write the initial seqno - 1 to the HW completed
seqno to initialize.

v2:
- Use __dma_fence_is_later() to compare hw fence seqnos. (Matthew Auld)

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/xe/xe_hw_fence.h b/drivers/gpu/drm/xe/xe_hw_fence.h
index 07f202db6526..523c2611ef5d 100644
--- a/drivers/gpu/drm/xe/xe_hw_fence.h
+++ b/drivers/gpu/drm/xe/xe_hw_fence.h
@@ -8,6 +8,8 @@
 
 #include "xe_hw_fence_types.h"
 
+#define XE_FENCE_INITIAL_SEQNO 1
+
 int xe_hw_fence_module_init(void);
 void xe_hw_fence_module_exit(void);