It might be better to add hid_parse() before
wacom_parse_and_register() to ask for the report descriptor
like what wacom_probe() does.
Fixes: 471d171 ("Input: wacom - move the USB (now hid) Wacom driver in drivers/hid")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
---
drivers/hid/wacom_sys.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 57bfa0a..48cb2e4 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -2486,6 +2486,9 @@ static void wacom_wireless_work(struct work_struct *work)
wacom_wac1->pid = wacom_wac->pid;
hid_hw_stop(hdev1);
+ error = hid_parse(wacom1->hdev);
+ if (error)
+ goto fail;
error = wacom_parse_and_register(wacom1, true);
if (error)
goto fail;
@@ -2498,6 +2501,9 @@ static void wacom_wireless_work(struct work_struct *work)
*((struct wacom_features *)id->driver_data);
wacom_wac2->pid = wacom_wac->pid;
hid_hw_stop(hdev2);
+ error = hid_parse(wacom2->hdev);
+ if (error)
+ goto fail;
error = wacom_parse_and_register(wacom2, true);
if (error)
goto fail;
@@ -2710,12 +2716,18 @@ static void wacom_mode_change_work(struct work_struct *work)
}
if (wacom1) {
+ error = hid_parse(wacom1->hdev);
+ if (error)
+ return;
error = wacom_parse_and_register(wacom1, false);
if (error)
return;
}
if (wacom2) {
+ error = hid_parse(wacom2->hdev);
+ if (error)
+ return;
error = wacom_parse_and_register(wacom2, false);
if (error)
return;
--
2.7.4
