From b9b7a115dfd16f22f46f14a2b419333d62229d9c Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Fri, 24 Jun 2022 13:23:38 +0200 Subject: [PATCH] platform/x86: panasonic-laptop: don't report duplicate brightness key-presses [ Upstream commit 1f2c9de83a50447a2d7166f6273ab0c0e97cd68e ] The brightness key-presses might also get reported by the ACPI video bus, check for this and in this case don't report the presses to avoid reporting 2 presses for a single key-press. Fixes: ed83c9171829 ("platform/x86: panasonic-laptop: Resolve hotkey double trigger bug") Reported-and-tested-by: Stefan Seyfried Reported-and-tested-by: Kenneth Chan Signed-off-by: Hans de Goede Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220624112340.10130-6-hdegoede@redhat.com Signed-off-by: Sasha Levin --- drivers/platform/x86/Kconfig | 1 + drivers/platform/x86/panasonic-laptop.c | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index e21ea3d23e6f..50a5c4f3cefd 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -871,6 +871,7 @@ config PANASONIC_LAPTOP tristate "Panasonic Laptop Extras" depends on INPUT && ACPI depends on BACKLIGHT_CLASS_DEVICE + depends on ACPI_VIDEO=n || ACPI_VIDEO select INPUT_SPARSEKMAP help This driver adds support for access to backlight control and hotkeys diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c index cd3c23593eee..65ca863ffb9f 100644 --- a/drivers/platform/x86/panasonic-laptop.c +++ b/drivers/platform/x86/panasonic-laptop.c @@ -132,6 +132,7 @@ #include #include #include +#include MODULE_AUTHOR("Hiroshi Miura "); MODULE_AUTHOR("David Bronaugh "); @@ -783,6 +784,13 @@ static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc) key, 0x80, false); } + /* + * Don't report brightness key-presses if they are also reported + * by the ACPI video bus. + */ + if ((key == 1 || key == 2) && acpi_video_handles_brightness_key_presses()) + return; + if (!sparse_keymap_report_event(hotk_input_dev, key, updown, false)) pr_err("Unknown hotkey event: 0x%04llx\n", result); }