[RFT PATCH 4/6] drm/ssd130x: Call drm_atomic_helper_shutdown() at remove time

[Douglas Anderson]

Based on grepping through the source code, this driver appears to be
missing a call to drm_atomic_helper_shutdown() at remove time. Let's
add it.

The fact that we should call drm_atomic_helper_shutdown() in the case
of OS driver remove comes straight out of the kernel doc "driver
instance overview" in drm_drv.c.

Suggested-by: Maxime Ripard <mripard at kernel.org>
Signed-off-by: Douglas Anderson <dianders at chromium.org>
---
This commit is only compile-time tested.

NOTE: I'm not 100% sure this is the correct thing to do, but I _think_
so. Please shout if you know better.

 drivers/gpu/drm/solomon/ssd130x.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ssd130x.c
index 5a80b228d18c..dc06fd82fd30 100644
--- a/drivers/gpu/drm/solomon/ssd130x.c
+++ b/drivers/gpu/drm/solomon/ssd130x.c
@@ -1131,6 +1131,7 @@ EXPORT_SYMBOL_GPL(ssd130x_probe);
 void ssd130x_remove(struct ssd130x_device *ssd130x)
 {
 	drm_dev_unplug(&ssd130x->drm);
+	drm_atomic_helper_shutdown(&ssd130x->drm);
 }
 EXPORT_SYMBOL_GPL(ssd130x_remove);
 
-- 
2.42.0.283.g2d96d420d3-goog