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HID: logitech-hidpp: bail out if wtp_connect fails

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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>
This commit is contained in:
Benjamin Tissoires 2014-12-16 17:06:01 -05:00 committed by Jiri Kosina
parent e529fea919
commit bf15944753
1 changed files with 9 additions and 6 deletions
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15
drivers/hid/hid-logitech-hidpp.c
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@ -862,24 +862,24 @@ static int wtp_allocate(struct hid_device *hdev, const struct hid_device_id *id)
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 @@ static void hidpp_connect_event(struct hidpp_device *hidpp)
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;