From ca3ffcbeb0c866d9b0cb38eaa2bd4416597b5966 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Mon, 29 Nov 2021 10:23:44 -0800 Subject: [PATCH] drm/msm/gpu: Don't allow zero fence_id Elsewhere we treat zero as "no fence" and __msm_gem_submit_destroy() skips removal from fence_idr. We could alternately change this to use negative values for "no fence" but I think it is more clear to not allow zero as a valid fence_id. Signed-off-by: Rob Clark Fixes: a61acbbe9cf8 ("drm/msm: Track "seqno" fences by idr") Link: https://lore.kernel.org/r/20211129182344.292609-1-robdclark@gmail.com Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_gem_submit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 282628d..6cfa984 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -881,7 +881,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, * to the underlying fence. */ submit->fence_id = idr_alloc_cyclic(&queue->fence_idr, - submit->user_fence, 0, INT_MAX, GFP_KERNEL); + submit->user_fence, 1, INT_MAX, GFP_KERNEL); if (submit->fence_id < 0) { ret = submit->fence_id = 0; submit->fence_id = 0; -- 2.7.4