From: Christian König <christian.koenig@amd.com>
Date: Mon, 9 May 2022 08:49:44 +0000 (+0200)
Subject: drm/qxl: stop using ttm_bo_wait
X-Git-Tag: v6.6.17~3937^2~23^2~1095
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=678e5b2258e871b22fe8c26edac2723feb852a47;p=platform%2Fkernel%2Flinux-rpi.git

drm/qxl: stop using ttm_bo_wait

TTM is just wrapping core DMA functionality here, remove the mid-layer.
No functional change.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221125102137.1801-6-christian.koenig@amd.com
---

diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c
index 63aa96a..281edab 100644
--- a/drivers/gpu/drm/qxl/qxl_cmd.c
+++ b/drivers/gpu/drm/qxl/qxl_cmd.c
@@ -579,7 +579,7 @@ void qxl_surface_evict(struct qxl_device *qdev, struct qxl_bo *surf, bool do_upd
 
 static int qxl_reap_surf(struct qxl_device *qdev, struct qxl_bo *surf, bool stall)
 {
-	int ret;
+	long ret;
 
 	ret = qxl_bo_reserve(surf);
 	if (ret)
@@ -588,7 +588,19 @@ static int qxl_reap_surf(struct qxl_device *qdev, struct qxl_bo *surf, bool stal
 	if (stall)
 		mutex_unlock(&qdev->surf_evict_mutex);
 
-	ret = ttm_bo_wait(&surf->tbo, true, !stall);
+	if (stall) {
+		ret = dma_resv_wait_timeout(surf->tbo.base.resv,
+					    DMA_RESV_USAGE_BOOKKEEP, true,
+					    15 * HZ);
+		if (ret > 0)
+			ret = 0;
+		else if (ret == 0)
+			ret = -EBUSY;
+	} else {
+		ret = dma_resv_test_signaled(surf->tbo.base.resv,
+					     DMA_RESV_USAGE_BOOKKEEP);
+		ret = ret ? -EBUSY : 0;
+	}
 
 	if (stall)
 		mutex_lock(&qdev->surf_evict_mutex);