freedreno: fence fix

A fence can outlive the ctx, so we shouldn't deref the ctx to get at the
screen.  We need some updates in libdrm_freedreno API to completely
handle fences properly, but this is at least an improvement.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/gallium/drivers/freedreno/freedreno_fence.c b/src/gallium/drivers/freedreno/freedreno_fence.c
index 46b057d..375e58f 100644
--- a/src/gallium/drivers/freedreno/freedreno_fence.c
+++ b/src/gallium/drivers/freedreno/freedreno_fence.c
@@ -35,6 +35,7 @@
 struct pipe_fence_handle {
 	struct pipe_reference reference;
 	struct fd_context *ctx;
+	struct fd_screen *screen;
 	uint32_t timestamp;
 };
 
@@ -68,7 +69,7 @@ boolean fd_screen_fence_finish(struct pipe_screen *screen,
 		struct pipe_fence_handle *fence,
 		uint64_t timeout)
 {
-	if (fd_pipe_wait(fence->ctx->screen->pipe, fence->timestamp))
+	if (fd_pipe_wait(fence->screen->pipe, fence->timestamp))
 		return false;
 
 	return true;
@@ -86,6 +87,7 @@ struct pipe_fence_handle * fd_fence_create(struct pipe_context *pctx)
 	pipe_reference_init(&fence->reference, 1);
 
 	fence->ctx = ctx;
+	fence->screen = ctx->screen;
 	fence->timestamp = fd_ringbuffer_timestamp(ctx->ring);
 
 	return fence;