5.15-stable review patch. If anyone has any objections, please let me know.
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From: Hans de Goede hdegoede@redhat.com
[ Upstream commit b52cbca22cbf6c9d2700c1e576d0ddcc670e49d5 ]
asus-nb-wmi calls i8042_install_filter() in some cases, but it never calls i8042_remove_filter(). This means that a dangling pointer to the filter function is left after rmmod leading to crashes.
Fix this by moving the i8042-filter installation to the shared asus-wmi code and also remove it from the shared code on driver unbind.
Fixes: b5643539b825 ("platform/x86: asus-wmi: Filter buggy scan codes on ASUS Q500A") Cc: Oleksij Rempel linux@rempel-privat.de Signed-off-by: Hans de Goede hdegoede@redhat.com Link: https://lore.kernel.org/r/20231120154235.610808-2-hdegoede@redhat.com Reviewed-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/platform/x86/Kconfig | 2 +- drivers/platform/x86/asus-nb-wmi.c | 11 ----------- drivers/platform/x86/asus-wmi.c | 8 ++++++++ 3 files changed, 9 insertions(+), 12 deletions(-)
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 50abcf0c483c3..c03367b13db62 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -257,6 +257,7 @@ config ASUS_WMI depends on RFKILL || RFKILL = n depends on HOTPLUG_PCI depends on ACPI_VIDEO || ACPI_VIDEO = n + depends on SERIO_I8042 || SERIO_I8042 = n select INPUT_SPARSEKMAP select LEDS_CLASS select NEW_LEDS @@ -271,7 +272,6 @@ config ASUS_WMI config ASUS_NB_WMI tristate "Asus Notebook WMI Driver" depends on ASUS_WMI - depends on SERIO_I8042 || SERIO_I8042 = n help This is a driver for newer Asus notebooks. It adds extra features like wireless radio and bluetooth control, leds, hotkeys, backlight... diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c index 7b8942fee76dd..49505939352ae 100644 --- a/drivers/platform/x86/asus-nb-wmi.c +++ b/drivers/platform/x86/asus-nb-wmi.c @@ -490,8 +490,6 @@ static const struct dmi_system_id asus_quirks[] = {
static void asus_nb_wmi_quirks(struct asus_wmi_driver *driver) { - int ret; - quirks = &quirk_asus_unknown; dmi_check_system(asus_quirks);
@@ -506,15 +504,6 @@ static void asus_nb_wmi_quirks(struct asus_wmi_driver *driver)
if (tablet_mode_sw != -1) quirks->tablet_switch_mode = tablet_mode_sw; - - if (quirks->i8042_filter) { - ret = i8042_install_filter(quirks->i8042_filter); - if (ret) { - pr_warn("Unable to install key filter\n"); - return; - } - pr_info("Using i8042 filter function for receiving events\n"); - } }
static const struct key_entry asus_nb_wmi_keymap[] = { diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index e7a01accf4ff1..2a06831449d5d 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -3092,6 +3092,12 @@ static int asus_wmi_add(struct platform_device *pdev) goto fail_wmi_handler; }
+ if (asus->driver->quirks->i8042_filter) { + err = i8042_install_filter(asus->driver->quirks->i8042_filter); + if (err) + pr_warn("Unable to install key filter - %d\n", err); + } + asus_wmi_battery_init(asus);
asus_wmi_debugfs_init(asus); @@ -3128,6 +3134,8 @@ static int asus_wmi_remove(struct platform_device *device) struct asus_wmi *asus;
asus = platform_get_drvdata(device); + if (asus->driver->quirks->i8042_filter) + i8042_remove_filter(asus->driver->quirks->i8042_filter); wmi_remove_notify_handler(asus->driver->event_guid); asus_wmi_backlight_exit(asus); asus_wmi_input_exit(asus);