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HID: logitech-hidpp: do all FF cleanup in hidpp_ff_destroy()

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All of the FF-related resources belong to corresponding FF device, so
they should be freed as a part of hidpp_ff_destroy() to avoid
potential race condidions.

Fixes: ff21a635dd1a ("HID: logitech-hidpp: Force feedback support for the Logitech G920")
Suggested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: Henrik Rydberg <rydberg@bitmath.org>
Cc: Pierre-Loup A. Griffais <pgriffais@valvesoftware.com>
Cc: Austin Palmer <austinp@valvesoftware.com>
Cc: linux-input@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org # 5.2+
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
This commit is contained in:
Andrey Smirnov 2019-10-17 21:45:17 -07:00 committed by Benjamin Tissoires
parent 905d754c53
commit 08c453f6d0
1 changed files with 5 additions and 28 deletions
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33
drivers/hid/hid-logitech-hidpp.c
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@ -2078,7 +2078,12 @@ static DEVICE_ATTR(range, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, hidpp
static void hidpp_ff_destroy(struct ff_device *ff)
{
struct hidpp_ff_private_data *data = ff->private;
struct hid_device *hid = data->hidpp->hid_dev;
hid_info(hid, "Unloading HID++ force feedback.\n");
device_remove_file(&hid->dev, &dev_attr_range);
destroy_workqueue(data->wq);
kfree(data->effect_ids);
}
@ -2170,31 +2175,6 @@ static int hidpp_ff_init(struct hidpp_device *hidpp,
return 0;
}
static int hidpp_ff_deinit(struct hid_device *hid)
{
struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
struct input_dev *dev = hidinput->input;
struct hidpp_ff_private_data *data;
if (!dev) {
hid_err(hid, "Struct input_dev not found!\n");
return -EINVAL;
}
hid_info(hid, "Unloading HID++ force feedback.\n");
data = dev->ff->private;
if (!data) {
hid_err(hid, "Private data not found!\n");
return -EINVAL;
}
destroy_workqueue(data->wq);
device_remove_file(&hid->dev, &dev_attr_range);
return 0;
}
/* ************************************************************************** */
/* */
/* Device Support */
@ -3713,9 +3693,6 @@ static void hidpp_remove(struct hid_device *hdev)
sysfs_remove_group(&hdev->dev.kobj, &ps_attribute_group);
if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920)
hidpp_ff_deinit(hdev);
hid_hw_stop(hdev);
cancel_work_sync(&hidpp->work);
mutex_destroy(&hidpp->send_mutex);