From 8f0215401204cff64a9bcaa950002d4456f7c6b3 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 24 Apr 2024 14:28:25 +0200 Subject: [PATCH] platform/x86: thinkpad_acpi: Do not send ACPI netlink events for unknown hotkeys MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Do not send ACPI netlink events for unknown hotkeys, to avoid userspace starting to rely on them. Instead these should be added to the keymap to send evdev events. This should not cause a behavior change for existing laptop models since all currently known 0x1xxx events have a mapping. In hindsight the ACPI netlink events should have been suppressed for the adaptive keyboard and extended hotkeys events too. But the kernel has been sending ACPI netlink events for those for a long time now, so we cannot just stop sending them without potentially causing issues for existing users who may depend on these. Tested-by: Mark Pearson Signed-off-by: Hans de Goede Reviewed-by: Mark Pearson Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20240424122834.19801-16-hdegoede@redhat.com --- drivers/platform/x86/thinkpad_acpi.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 91ede19ba9b9..3fa0e918e343 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -2250,7 +2250,7 @@ static void tpacpi_input_send_tabletsw(void) } } -static bool tpacpi_input_send_key(const u32 hkey) +static bool tpacpi_input_send_key(const u32 hkey, bool *send_acpi_ev) { unsigned int keycode, scancode; @@ -2271,6 +2271,14 @@ static bool tpacpi_input_send_key(const u32 hkey) scancode = hkey - TP_HKEY_EV_EXTENDED_KEY_START + TP_ACPI_HOTKEYSCAN_EXTENDED_START; } else { + /* + * Do not send ACPI netlink events for unknown hotkeys, to + * avoid userspace starting to rely on them. Instead these + * should be added to the keymap to send evdev events. + */ + if (send_acpi_ev) + *send_acpi_ev = false; + return false; } @@ -2298,7 +2306,7 @@ static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; /* Do NOT call without validating scancode first */ static void tpacpi_hotkey_send_key(unsigned int scancode) { - tpacpi_input_send_key(TP_HKEY_EV_ORIG_KEY_START + scancode); + tpacpi_input_send_key(TP_HKEY_EV_ORIG_KEY_START + scancode, NULL); } static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) @@ -3734,7 +3742,7 @@ static bool hotkey_notify_hotkey(const u32 hkey, bool *send_acpi_ev) return true; } - return tpacpi_input_send_key(hkey); + return tpacpi_input_send_key(hkey, send_acpi_ev); } /* 0x2000-0x2FFF: Wakeup reason */ -- 2.25.1