HID: logitech-hidpp: bail out if wtp_connect fails
If wtp_connect() fails, that means most of the time that the device has
been disconnected. Subsequent attempts to contact the device will fail
too, so it's simpler to bail out earlier.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index 6a5fe97..e1f3aca 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -862,24 +862,24 @@
return 0;
};
-static void wtp_connect(struct hid_device *hdev, bool connected)
+static int wtp_connect(struct hid_device *hdev, bool connected)
{
struct hidpp_device *hidpp = hid_get_drvdata(hdev);
struct wtp_data *wd = hidpp->private_data;
int ret;
if (!connected)
- return;
+ return 0;
if (!wd->x_size) {
ret = wtp_get_config(hidpp);
if (ret) {
hid_err(hdev, "Can not get wtp config: %d\n", ret);
- return;
+ return ret;
}
}
- hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index,
+ return hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index,
true, true);
}
@@ -1063,8 +1063,11 @@
struct input_dev *input;
char *name, *devm_name;
- if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
- wtp_connect(hdev, connected);
+ if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) {
+ ret = wtp_connect(hdev, connected);
+ if (ret)
+ return;
+ }
if (!connected || hidpp->delayed_input)
return;