[PATCH v4 4/6] HID: steam: Don't set feature reports when disconnecting

[Vicki Pfau <vi@endrift.com>]

When an input device is closed, we set a feature report to reset lizard
mode and IMU mode. However, if the input device is closed because it was
removed, then we will necessarily error out when sending this, resulting in
logged errors. Since an error here is expected, we should just fail
silently.

Signed-off-by: Vicki Pfau <vi@endrift.com>
---
 drivers/hid/hid-steam.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/hid/hid-steam.c b/drivers/hid/hid-steam.c
index 8d3ef523682b..d95296b28f92 100644
--- a/drivers/hid/hid-steam.c
+++ b/drivers/hid/hid-steam.c
@@ -490,9 +490,13 @@ static int steam_recv_report_id(struct steam_device *steam,
 	}
 
 	kfree(buf);
-	if (ret < 0)
+	/*
+	 * Don't log if the failure is -ENODEV, as this
+	 * can happen normally on disconnect.
+	 */
+	if (ret < 0 && ret != -ENODEV)
 		hid_err(steam->hdev, "%s: error %d\n", __func__, ret);
-	else
+	else if (ret > 0)
 		hid_dbg(steam->hdev, "Received report %*ph\n", size, data);
 	if (ret < 0)
 		return ret;
@@ -570,7 +574,11 @@ static int steam_send_report_id(struct steam_device *steam,
 	} while (--retries);
 
 	kfree(buf);
-	if (ret < 0)
+	/*
+	 * Don't log if the failure is -ENODEV, as this
+	 * can happen normally on disconnect.
+	 */
+	if (ret < 0 && ret != -ENODEV)
 		hid_err(steam->hdev, "%s: error %d (%*ph)\n", __func__,
 				ret, size, cmd);
 	return ret;
-- 
2.54.0