releases/6.2.16/drm-msm-fix-missing-wq-allocation-error-handling.patch

From ca090c837b430752038b24e56dd182010d77f6f6 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan+linaro@kernel.org>
Date: Mon, 6 Mar 2023 11:07:19 +0100
Subject: drm/msm: fix missing wq allocation error handling

From: Johan Hovold <johan+linaro@kernel.org>

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>
---
 drivers/gpu/drm/msm/msm_drv.c |    4 ++++
 1 file changed, 4 insertions(+)

--- 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 *d
 	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);