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platform/x86: asus-wmi: Move i8042 filter install to shared asus-wmi code

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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: b5643539b8 ("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>
This commit is contained in:
Hans de Goede 2023-11-20 16:42:33 +01:00 committed by Ilpo Järvinen
parent a6584711e6
commit b52cbca22c
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
3 changed files with 9 additions and 12 deletions
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2
drivers/platform/x86/Kconfig
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@ -263,6 +263,7 @@ config ASUS_WMI
depends on RFKILL || RFKILL = n depends on RFKILL || RFKILL = n
depends on HOTPLUG_PCI depends on HOTPLUG_PCI
depends on ACPI_VIDEO || ACPI_VIDEO = n depends on ACPI_VIDEO || ACPI_VIDEO = n
depends on SERIO_I8042 || SERIO_I8042 = n
select INPUT_SPARSEKMAP select INPUT_SPARSEKMAP
select LEDS_CLASS select LEDS_CLASS
select NEW_LEDS select NEW_LEDS
@ -279,7 +280,6 @@ config ASUS_WMI
config ASUS_NB_WMI config ASUS_NB_WMI
tristate "Asus Notebook WMI Driver" tristate "Asus Notebook WMI Driver"
depends on ASUS_WMI depends on ASUS_WMI
depends on SERIO_I8042 || SERIO_I8042 = n
help help
This is a driver for newer Asus notebooks. It adds extra features This is a driver for newer Asus notebooks. It adds extra features
like wireless radio and bluetooth control, leds, hotkeys, backlight... like wireless radio and bluetooth control, leds, hotkeys, backlight...

11
drivers/platform/x86/asus-nb-wmi.c
View File

@ -503,8 +503,6 @@ static const struct dmi_system_id asus_quirks[] = {
static void asus_nb_wmi_quirks(struct asus_wmi_driver *driver) static void asus_nb_wmi_quirks(struct asus_wmi_driver *driver)
{ {
int ret;
quirks = &quirk_asus_unknown; quirks = &quirk_asus_unknown;
dmi_check_system(asus_quirks); dmi_check_system(asus_quirks);
@ -519,15 +517,6 @@ static void asus_nb_wmi_quirks(struct asus_wmi_driver *driver)
if (tablet_mode_sw != -1) if (tablet_mode_sw != -1)
quirks->tablet_switch_mode = tablet_mode_sw; 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[] = { static const struct key_entry asus_nb_wmi_keymap[] = {

8
drivers/platform/x86/asus-wmi.c
View File

@ -4567,6 +4567,12 @@ static int asus_wmi_add(struct platform_device *pdev)
goto fail_wmi_handler; 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_battery_init(asus);
asus_wmi_debugfs_init(asus); asus_wmi_debugfs_init(asus);
@ -4603,6 +4609,8 @@ static int asus_wmi_remove(struct platform_device *device)
struct asus_wmi *asus; struct asus_wmi *asus;
asus = platform_get_drvdata(device); 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); wmi_remove_notify_handler(asus->driver->event_guid);
asus_wmi_backlight_exit(asus); asus_wmi_backlight_exit(asus);
asus_screenpad_exit(asus); asus_screenpad_exit(asus);