On 08/08/2024 09:13, Ma Ke wrote:
As it may return NULL pointer and cause NULL pointer dereference. Add check
for the return value of alloc_ordered_workqueue.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 2f95bc6d324a ("drm: omapdrm: Perform initialization/cleanup at probe/remove time")
Signed-off-by: Ma Ke <make24@xxxxxxxxxxx>
---
drivers/gpu/drm/omapdrm/omap_drv.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index 6598c9c08ba1..94a57f0d1c08 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -695,6 +695,10 @@ static int omapdrm_init(struct omap_drm_private *priv, struct device *dev)
soc = soc_device_match(omapdrm_soc_devices);
priv->omaprev = soc ? (uintptr_t)soc->data : 0;
priv->wq = alloc_ordered_workqueue("omapdrm", 0);
+ if (!priv->wq) {
+ ret = -ENOMEM;
+ goto err_alloc_workqueue;
+ }
mutex_init(&priv->list_lock);
INIT_LIST_HEAD(&priv->obj_list);
@@ -753,6 +757,7 @@ static int omapdrm_init(struct omap_drm_private *priv, struct device *dev)
drm_mode_config_cleanup(ddev);
omap_gem_deinit(ddev);
destroy_workqueue(priv->wq);
+err_alloc_workqueue:
omap_disconnect_pipelines(ddev);
drm_dev_put(ddev);
return ret;
Thanks, I'll pick this up to drm-misc.
Tomi
