42 lines
1.5 KiB
Diff
42 lines
1.5 KiB
Diff
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From 6122171153699e140375a99ad2b0cca7668617aa Mon Sep 17 00:00:00 2001
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From: "Pierre-Loup A. Griffais" <pgriffais@valvesoftware.com>
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Date: Tue, 14 Jun 2022 14:31:18 -0700
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Subject: [PATCH 02/21] drivers: video: backlight: Disable backlight
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notification events.
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We don't want to generate udev events for brightness changes on Steam Deck,
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as some games like Celeste will re-enumerate controller devices in response
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to this event.
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Patch from Sam Lantinga.
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(cherry picked from commit 85da5a5f7b69f22f960776cde3bf5862f3613363)
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Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
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---
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drivers/video/backlight/backlight.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
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index 86e1cdc8e369..06641d99c209 100644
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--- a/drivers/video/backlight/backlight.c
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+++ b/drivers/video/backlight/backlight.c
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@@ -160,6 +160,7 @@ static inline void backlight_unregister_fb(struct backlight_device *bd)
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static void backlight_generate_event(struct backlight_device *bd,
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enum backlight_update_reason reason)
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{
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+#if 0 // We don't want to generate udev events for brightness changes on Steam Deck, as some games like Celeste will re-enumerate controller devices in response to this event.
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char *envp[2];
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switch (reason) {
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@@ -175,6 +176,7 @@ static void backlight_generate_event(struct backlight_device *bd,
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}
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envp[1] = NULL;
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kobject_uevent_env(&bd->dev.kobj, KOBJ_CHANGE, envp);
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+#endif // 0
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sysfs_notify(&bd->dev.kobj, NULL, "actual_brightness");
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}
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--
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2.44.0
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