linux-kernel - [PATCH linux-next] drm/nouveau/mmu: drop unneeded assignment in the nvkm_uvmm_mthd

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Date:   Fri, 20 Aug 2021 19:11:06 -0700
From:   CGEL <cgel.zte@...il.com>
To:     Ben Skeggs <bskeggs@...hat.com>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Luo penghao <luo.penghao@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH linux-next] drm/nouveau/mmu: drop unneeded assignment in the nvkm_uvmm_mthd_page()

From: Luo penghao <luo.penghao@....com.cn>

In order to keep the code style consistency of the whole file,
the 'ret' assignments should be deleted.

The clang_analyzer complains as follows:

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c:317:8:warning:
Although the value storedto 'ret' is used in the enclosing expression,
the value is never actually read from 'ret'.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Luo penghao <luo.penghao@....com.cn>
---
 drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c
index c43b824..d9f8e11 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c
@@ -314,7 +314,7 @@ nvkm_uvmm_mthd_page(struct nvkm_uvmm *uvmm, void *argv, u32 argc)
 	page = uvmm->vmm->func->page;
 	for (nr = 0; page[nr].shift; nr++);
 
-	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
+	if (!(nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
 		if ((index = args->v0.index) >= nr)
 			return -EINVAL;
 		type = page[index].type;
-- 
2.15.2