[RFC PATCH 4/8] drm/panel-simple: Don't re-read the EDID every time we power off the panel

From: Douglas Anderson
Date: Thu Jul 22 2021 - 20:22:41 EST


The simple-panel driver is for panels that are not hot-pluggable at
runtime. Let's keep our cached EDID around until driver unload.

Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
---

drivers/gpu/drm/panel/panel-simple.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 9b286bd4444f..bcdc84b20827 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -370,9 +370,6 @@ static int panel_simple_suspend(struct device *dev)
regulator_disable(p->supply);
p->unprepared_time = ktime_get();

- kfree(p->edid);
- p->edid = NULL;
-
return 0;
}

@@ -862,6 +859,9 @@ static int panel_simple_remove(struct device *dev)
if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
put_device(&panel->ddc->dev);

+ kfree(panel->edid);
+ panel->edid = NULL;
+
return 0;
}

--
2.32.0.432.gabb21c7263-goog