linux-kernel - [PATCH] drm/nouveau/disp: fix an error problem in nvkm_uconn

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Date: Wed, 17 Apr 2024 16:39:21 +0800
From: Su Hui <suhui@...china.com>
To: kherbst@...hat.com,
	lyude@...hat.com,
	dakr@...hat.com,
	airlied@...il.com,
	daniel@...ll.ch,
	nathan@...nel.org,
	ndesaulniers@...gle.com,
	morbo@...gle.com,
	justinstitt@...gle.com
Cc: Su Hui <suhui@...china.com>,
	bskeggs@...hat.com,
	airlied@...hat.com,
	dri-devel@...ts.freedesktop.org,
	nouveau@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	llvm@...ts.linux.dev,
	kernel-janitors@...r.kernel.org
Subject: [PATCH] drm/nouveau/disp: fix an error problem in nvkm_uconn_new()

Clang Static Checker(scan-build) Warning:
drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c:line 215, column 4
Value stored to 'ret' is never read.

Return the error code rather than zero when 'conn->info.type' has an
unknown type.

Fixes: 8b7d92cad953 ("drm/nouveau/kms/nv50-: create connectors based on nvkm info")
Signed-off-by: Su Hui <suhui@...china.com>
---
 drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c
index 2dab6612c4fc..6a67d307bf79 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c
@@ -213,13 +213,14 @@ nvkm_uconn_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, struct nv
 		default:
 			WARN_ON(1);
 			ret = -EINVAL;
-			break;
+			goto err;
 		}
 
 		nvkm_object_ctor(&nvkm_uconn, oclass, &conn->object);
 		*pobject = &conn->object;
 		ret = 0;
 	}
+err:
 	spin_unlock(&disp->client.lock);
 	return ret;
 }
-- 
2.30.2