[PATCH 1/2] HID: lg: do not return an error when FF is disabled

From: Benjamin Tissoires
Date: Tue Sep 28 2021 - 04:39:19 EST


Found when CONFIG_LOGIRUMBLEPAD2_FF was disabled:
lg2ff_init() returns -1, and lg_probe() checks the return value and
bails out, laterally disabling the device.

Fixes: 2dbf635ea1c0 "HID: hid-lg: Check return values from lg[N]ff_init()"
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
---
drivers/hid/hid-lg.h | 6 +++---
drivers/hid/hid-lg4ff.h | 4 ++--
2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/hid/hid-lg.h b/drivers/hid/hid-lg.h
index 3d8902ba1c6c..dbec5e8fc142 100644
--- a/drivers/hid/hid-lg.h
+++ b/drivers/hid/hid-lg.h
@@ -10,19 +10,19 @@ struct lg_drv_data {
#ifdef CONFIG_LOGITECH_FF
int lgff_init(struct hid_device *hdev);
#else
-static inline int lgff_init(struct hid_device *hdev) { return -1; }
+static inline int lgff_init(struct hid_device *hdev) { return 0; }
#endif

#ifdef CONFIG_LOGIRUMBLEPAD2_FF
int lg2ff_init(struct hid_device *hdev);
#else
-static inline int lg2ff_init(struct hid_device *hdev) { return -1; }
+static inline int lg2ff_init(struct hid_device *hdev) { return 0; }
#endif

#ifdef CONFIG_LOGIG940_FF
int lg3ff_init(struct hid_device *hdev);
#else
-static inline int lg3ff_init(struct hid_device *hdev) { return -1; }
+static inline int lg3ff_init(struct hid_device *hdev) { return 0; }
#endif

#endif
diff --git a/drivers/hid/hid-lg4ff.h b/drivers/hid/hid-lg4ff.h
index e5c55d515ac2..25bc88cd877e 100644
--- a/drivers/hid/hid-lg4ff.h
+++ b/drivers/hid/hid-lg4ff.h
@@ -16,8 +16,8 @@ static inline int lg4ff_adjust_input_event(struct hid_device *hid, struct hid_fi
struct hid_usage *usage, s32 value, struct lg_drv_data *drv_data) { return 0; }
static inline int lg4ff_raw_event(struct hid_device *hdev, struct hid_report *report,
u8 *rd, int size, struct lg_drv_data *drv_data) { return 0; }
-static inline int lg4ff_init(struct hid_device *hdev) { return -1; }
-static inline int lg4ff_deinit(struct hid_device *hdev) { return -1; }
+static inline int lg4ff_init(struct hid_device *hdev) { return 0; }
+static inline int lg4ff_deinit(struct hid_device *hdev) { return 0; }
#endif

#endif
--
2.26.3