| Message ID | 20170629125930.821-3-chris@chris-wilson.co.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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;
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@chris-wilson.co.uk> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Sean Paul <seanpaul@chromium.org> Cc: Gustavo Padovan <gustavo@padovan.org> --- drivers/dma-buf/sw_sync.c | 5 +++++ 1 file changed, 5 insertions(+)