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Subject[PATCH 2/4] HID: multitouch: don't check HID_GROUP_MULTITOUCH_WIN_8 for serial protocol
Date
The HID_GROUP_MULTITOUCH_WIN_8 group never needs to check for the serial
protocol, so avoid setting `td->serial_maybe = true;` in order to avoid
an unnecessary mt_post_parse_default_settings() call

Signed-off-by: Joey Pabalinas <joeypabalinas@gmail.com>

1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index a793076139d7d0db9b..c0654db0b736543ca0 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1460,11 +1460,13 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
if (!td->fields) {
dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
return -ENOMEM;
}

- if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
+ if (id->vendor == HID_ANY_ID
+ && id->product == HID_ANY_ID
+ && id->group != HID_GROUP_MULTITOUCH_WIN_8)
td->serial_maybe = true;

/* This allows the driver to correctly support devices
* that emit events over several HID messages.
*/
--
2.18.0
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