From: Johan Hovold <johan+linaro@kernel.org>
Date: Mon, 6 Mar 2023 10:07:19 +0000 (+0100)
Subject: drm/msm: fix missing wq allocation error handling
X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e7e9e9b3f468a16d476feecad549b41ac4e77f23;p=linux

drm/msm: fix missing wq allocation error handling

commit ca090c837b430752038b24e56dd182010d77f6f6 upstream.

Add the missing sanity check to handle workqueue allocation failures.

Fixes: c8afe684c95c ("drm/msm: basic KMS driver for snapdragon")
Cc: stable@vger.kernel.org      # 3.12
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/525102/
Link: https://lore.kernel.org/r/20230306100722.28485-8-johan+linaro@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 488260aedd02..897be44b7f99 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -431,6 +431,10 @@ 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);