From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
From: Dave Airlie <airlied@xxxxxxxxxx>
[ Upstream commit 4042160c2e5433e0759782c402292a90b5bf458d ]
The index variable should only be increased in one place.
Noticed this while trying to track down another oops.
v2: use while loop.
Fixes: f295c8cfec83 ("drm/nouveau: fix dma syncing warning with debugging on.")
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@xxxxxxxxx>
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20210311043527.5376-1-airlied@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/nouveau/nouveau_bo.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 7ea367a5444d..f1c9a22083be 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -556,7 +556,8 @@ nouveau_bo_sync_for_device(struct nouveau_bo *nvbo)
if (nvbo->force_coherent)
return;
- for (i = 0; i < ttm_dma->num_pages; ++i) {
+ i = 0;
+ while (i < ttm_dma->num_pages) {
struct page *p = ttm_dma->pages[i];
size_t num_pages = 1;
@@ -587,7 +588,8 @@ nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo)
if (nvbo->force_coherent)
return;
- for (i = 0; i < ttm_dma->num_pages; ++i) {
+ i = 0;
+ while (i < ttm_dma->num_pages) {
struct page *p = ttm_dma->pages[i];
size_t num_pages = 1;
--
2.30.1
