linux-kernel - [PATCH 07/10] drm/msm: fix missing wq allocation error handling

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Message-Id: <20230306100722.28485-8-johan+linaro@kernel.org>
Date:   Mon,  6 Mar 2023 11:07:19 +0100
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>, stable@...r.kernel.org
Subject: [PATCH 07/10] drm/msm: fix missing wq allocation error handling

Add the missing sanity check to handle workqueue allocation failures.

Fixes: c8afe684c95c ("drm/msm: basic KMS driver for snapdragon")
Cc: stable@...r.kernel.org      # 3.12
Cc: Rob Clark <robdclark@...il.com>
Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 drivers/gpu/drm/msm/msm_drv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 41cc6cd690cd..ac3b77dbfacc 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -432,6 +432,10 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv)
 	priv->dev = ddev;
 
 	priv->wq = alloc_ordered_workqueue("msm", 0);
+	if (!priv->wq) {
+		ret = -ENOMEM;
+		goto err_put_dev;
+	}
 
 	INIT_LIST_HEAD(&priv->objects);
 	mutex_init(&priv->obj_lock);
-- 
2.39.2