The timeline is u32, which limits any single advance to INT_MAX so that
we can detect all fences that need signaling.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Cc: Sean Paul <seanpaul@xxxxxxxxxxxx>
Cc: Gustavo Padovan <gustavo@xxxxxxxxxxx>
---
drivers/dma-buf/sw_sync.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
index 4d5d8c5e2534..0e676d08aa70 100644
--- a/drivers/dma-buf/sw_sync.c
+++ b/drivers/dma-buf/sw_sync.c
@@ -345,6 +345,11 @@ static long sw_sync_ioctl_inc(struct sync_timeline *obj, unsigned long arg)
if (copy_from_user(&value, (void __user *)arg, sizeof(value)))
return -EFAULT;
+ while (value > INT_MAX) {
+ sync_timeline_signal(obj, INT_MAX);
+ value -= INT_MAX;
+ }
+
sync_timeline_signal(obj, value);
return 0;
--
2.13.1
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