This is a note to let you know that I've just added the patch titled
platform/x86: acer-wmi: Cleanup accelerometer device handling
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
platform-x86-acer-wmi-cleanup-accelerometer-device-h.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0b7ccea5bbcdfa21329bc30d45a5c2a9fb8550f7
Author: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Mon Oct 19 20:56:25 2020 +0200
platform/x86: acer-wmi: Cleanup accelerometer device handling
[ Upstream commit 9feb0763e4985ccfae632de3bb2f029cc8389842 ]
Cleanup accelerometer device handling:
-Drop acer_wmi_accel_destroy instead directly call input_unregister_device.
-The information tracked by the CAP_ACCEL flag mirrors acer_wmi_accel_dev
being NULL. Drop the CAP flag, this is a preparation change for allowing
users to override the capability flags. Dropping the flag stops users
from causing a NULL pointer dereference by forcing the capability.
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20201019185628.264473-3-hdegoede@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 75b1f6ceb76e..184ec08d02a4 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -211,7 +211,6 @@ struct hotkey_function_type_aa {
#define ACER_CAP_BLUETOOTH BIT(2)
#define ACER_CAP_BRIGHTNESS BIT(3)
#define ACER_CAP_THREEG BIT(4)
-#define ACER_CAP_ACCEL BIT(5)
/*
* Interface type flags
@@ -1516,7 +1515,7 @@ static int acer_gsensor_event(void)
struct acpi_buffer output;
union acpi_object out_obj[5];
- if (!has_cap(ACER_CAP_ACCEL))
+ if (!acer_wmi_accel_dev)
return -1;
output.length = sizeof(out_obj);
@@ -1890,8 +1889,6 @@ static int __init acer_wmi_accel_setup(void)
gsensor_handle = acpi_device_handle(adev);
acpi_dev_put(adev);
- interface->capability |= ACER_CAP_ACCEL;
-
acer_wmi_accel_dev = input_allocate_device();
if (!acer_wmi_accel_dev)
return -ENOMEM;
@@ -1917,11 +1914,6 @@ err_free_dev:
return err;
}
-static void acer_wmi_accel_destroy(void)
-{
- input_unregister_device(acer_wmi_accel_dev);
-}
-
static int __init acer_wmi_input_setup(void)
{
acpi_status status;
@@ -2076,7 +2068,7 @@ static int acer_resume(struct device *dev)
if (has_cap(ACER_CAP_BRIGHTNESS))
set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
- if (has_cap(ACER_CAP_ACCEL))
+ if (acer_wmi_accel_dev)
acer_gsensor_init();
return 0;
@@ -2266,8 +2258,8 @@ error_device_alloc:
error_platform_register:
if (wmi_has_guid(ACERWMID_EVENT_GUID))
acer_wmi_input_destroy();
- if (has_cap(ACER_CAP_ACCEL))
- acer_wmi_accel_destroy();
+ if (acer_wmi_accel_dev)
+ input_unregister_device(acer_wmi_accel_dev);
return err;
}
@@ -2277,8 +2269,8 @@ static void __exit acer_wmi_exit(void)
if (wmi_has_guid(ACERWMID_EVENT_GUID))
acer_wmi_input_destroy();
- if (has_cap(ACER_CAP_ACCEL))
- acer_wmi_accel_destroy();
+ if (acer_wmi_accel_dev)
+ input_unregister_device(acer_wmi_accel_dev);
remove_debugfs();
platform_device_unregister(acer_platform_device);
