linux-kernel - [PATCH linux-next] drm/nouveau/mmu/gp100-: drop unneeded assignment in the if condition.

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Date:   Fri, 20 Aug 2021 19:14:47 -0700
From:   CGEL <cgel.zte@...il.com>
To:     Ben Skeggs <bskeggs@...hat.com>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Alistair Popple <apopple@...dia.com>,
        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/gp100-: drop unneeded assignment in the if condition.

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

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

The clang_analyzer complains as follows:

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c:499:8: warning:
Although the value storedto 'inst' is used in the enclosing expression,
the value is never actually read from 'inst'.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Luo penghao <luo.penghao@....com.cn>
---
 drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c
index f02abd9..5d7766a 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c
@@ -502,7 +502,7 @@ gp100_vmm_fault_cancel(struct nvkm_vmm *vmm, void *argv, u32 argc)
 	args->v0.inst |= 0x80000000;
 
 	if (!WARN_ON(nvkm_gr_ctxsw_pause(device))) {
-		if ((inst = nvkm_gr_ctxsw_inst(device)) == args->v0.inst) {
+		if ((nvkm_gr_ctxsw_inst(device)) == args->v0.inst) {
 			gf100_vmm_invalidate(vmm, 0x0000001b
 					     /* CANCEL_TARGETED. */ |
 					     (args->v0.hub    << 20) |
-- 
2.15.2