From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from endrift.com (endrift.com [173.255.198.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E3AAE280329 for ; Fri, 10 Jul 2026 02:02:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=173.255.198.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783648931; cv=none; b=aBtU+UJHz1K+V7x/Mq1SEhj6DqjuS/1v8OoyUserSQU3Fy1yDqBUc7JIToO2Ph9jN5f8UOHzHnM/lGS4xJYzXgW7CY143qTytOZPfPZzqzcrNYI2BFrBWYL/yEDGcDgGoe923yUZWi2xjly1UWXYRuLZFhQW3XZNYWUBAu65apE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783648931; c=relaxed/simple; bh=xgZDhFWLxQ0l/WVfWkTMqnxp2nS4i0QAOvO9dS+19Zo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ihdZ9+n4McAb9Re0e6pdAeAJ7Po54NBrg0DqJej32F43q5F+VE12ScF9l6ziejWE953zUnloELIzFSrHGm437qFpkJMKtScjGqw1ZGtMgMy4clhOqJUAbrD9XyZcTTmgCMCvwwfQwoy2mNLD0efMOI57babDmKiRE8+gVkP2yWE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=endrift.com; spf=pass smtp.mailfrom=endrift.com; dkim=pass (2048-bit key) header.d=endrift.com header.i=@endrift.com header.b=VB7MQqdX; arc=none smtp.client-ip=173.255.198.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=endrift.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=endrift.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=endrift.com header.i=@endrift.com header.b="VB7MQqdX" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=endrift.com; s=2020; t=1783648919; bh=xgZDhFWLxQ0l/WVfWkTMqnxp2nS4i0QAOvO9dS+19Zo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VB7MQqdXdD6ve9bQ7iXu1zw0S+RrH0/SpditEalLcrGeC85YhD7x2fBXpVjdiw038 eQRIAZYfxvdfqLk0NcnS//ueKUuhwrZcWDsI+p4mVbwKkST+zZnSpaJHghwJXDi7W9 jtv5dnmTEIbfYd+STU0IrMXJWoFdfn5k8k6qPls1Bxq7hEC5OnofvMfwcnjUfhwOOG gzRabGaQ9b/8iC6nAZ30KrkDZLAjIUfn1cGYsT0m3BoftKO70LfCE/seezjfH/scDV hHwOaek/UVmndq7Z24xEZEUObYfbk38lRbhtGmrK/SweX+I1PD8Lx4XHFrTRasAOSx NI3y5E4/mPOng== Received: from microtis.vulpes.eutheria.net (71-212-73-87.tukw.qwest.net [71.212.73.87]) by endrift.com (Postfix) with ESMTPSA id D5675132038; Thu, 09 Jul 2026 19:01:58 -0700 (PDT) From: Vicki Pfau To: Jiri Kosina , Benjamin Tissoires , linux-input@vger.kernel.org Cc: Vicki Pfau , Yousef Alhouseen Subject: [PATCH v3 08/10] HID: steam: Improve logging and other cleanup Date: Thu, 9 Jul 2026 19:00:43 -0700 Message-ID: <20260710020048.2337655-9-vi@endrift.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260710020048.2337655-1-vi@endrift.com> References: <20260710020048.2337655-1-vi@endrift.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Adds more logging as appropriate, reindents an enum to match surrounding style, as well as cleaning up some places where we can use guard() instead of doing locking and unlocking manually. Signed-off-by: Vicki Pfau --- drivers/hid/hid-steam.c | 56 ++++++++++++++++++++++++----------------- 1 file changed, 33 insertions(+), 23 deletions(-) diff --git a/drivers/hid/hid-steam.c b/drivers/hid/hid-steam.c index 9dc77cd76edb..298a2c17e112 100644 --- a/drivers/hid/hid-steam.c +++ b/drivers/hid/hid-steam.c @@ -246,14 +246,14 @@ enum { /* Input report identifiers */ enum { - ID_CONTROLLER_STATE = 1, - ID_CONTROLLER_DEBUG = 2, - ID_CONTROLLER_WIRELESS = 3, - ID_CONTROLLER_STATUS = 4, - ID_CONTROLLER_DEBUG2 = 5, - ID_CONTROLLER_SECONDARY_STATE = 6, - ID_CONTROLLER_BLE_STATE = 7, - ID_CONTROLLER_DECK_STATE = 9 + ID_CONTROLLER_STATE = 1, + ID_CONTROLLER_DEBUG = 2, + ID_CONTROLLER_WIRELESS = 3, + ID_CONTROLLER_STATUS = 4, + ID_CONTROLLER_DEBUG2 = 5, + ID_CONTROLLER_SECONDARY_STATE = 6, + ID_CONTROLLER_BLE_STATE = 7, + ID_CONTROLLER_DECK_STATE = 9, }; /* Read-only attributes */ @@ -379,9 +379,16 @@ static int steam_recv_report(struct steam_device *steam, ret = hid_hw_raw_request(steam->hdev, 0x00, buf, hid_report_len(r) + 1, HID_FEATURE_REPORT, HID_REQ_GET_REPORT); - if (ret > 0) - memcpy(data, buf + 1, min(size, ret - 1)); + if (ret > 0) { + ret = min(size, ret - 1); + memcpy(data, buf + 1, ret); + } kfree(buf); + + if (ret < 0) + hid_err(steam->hdev, "%s: error %d\n", __func__, ret); + else + hid_dbg(steam->hdev, "Received report %*ph\n", ret, data); return ret; } @@ -409,6 +416,8 @@ static int steam_send_report(struct steam_device *steam, /* The report ID is always 0 */ memcpy(buf + 1, cmd, size); + hid_dbg(steam->hdev, "Sending report %*ph\n", size, cmd); + /* * Sometimes the wireless controller fails with EPIPE * when sending a feature report. @@ -481,22 +490,21 @@ static int steam_get_serial(struct steam_device *steam) u8 cmd[] = {ID_GET_STRING_ATTRIBUTE, sizeof(steam->serial_no), ATTRIB_STR_UNIT_SERIAL}; u8 reply[3 + STEAM_SERIAL_LEN + 1]; - mutex_lock(&steam->report_mutex); + guard(mutex)(&steam->report_mutex); ret = steam_send_report(steam, cmd, sizeof(cmd)); if (ret < 0) - goto out; + return ret; ret = steam_recv_report(steam, reply, sizeof(reply)); if (ret < 0) - goto out; + return ret; if (reply[0] != ID_GET_STRING_ATTRIBUTE || reply[1] < 1 || reply[1] > sizeof(steam->serial_no) || reply[2] != ATTRIB_STR_UNIT_SERIAL) { - ret = -EIO; - goto out; + hid_err(steam->hdev, "%s: invalid reply (%*ph)\n", __func__, + (int)sizeof(reply), reply); + return -EIO; } reply[3 + STEAM_SERIAL_LEN] = 0; strscpy(steam->serial_no, reply + 3, reply[1]); -out: - mutex_unlock(&steam->report_mutex); return ret; } @@ -516,8 +524,11 @@ static int steam_get_attributes(struct steam_device *steam) ret = steam_recv_report(steam, reply, sizeof(reply)); if (ret < 0) return ret; - if (reply[0] != ID_GET_ATTRIBUTES_VALUES || reply[1] < 2) + if (reply[0] != ID_GET_ATTRIBUTES_VALUES || reply[1] < 2) { + hid_err(steam->hdev, "%s: invalid reply (%*ph)\n", __func__, + (int)sizeof(reply), reply); return -EIO; + } size = min(reply[1], sizeof(reply) - 2); for (i = 0; i + sizeof(*attr) <= size; i += sizeof(*attr)) { @@ -539,11 +550,8 @@ static int steam_get_attributes(struct steam_device *steam) */ static inline int steam_request_conn_status(struct steam_device *steam) { - int ret; - mutex_lock(&steam->report_mutex); - ret = steam_send_report_byte(steam, ID_DONGLE_GET_WIRELESS_STATE); - mutex_unlock(&steam->report_mutex); - return ret; + guard(mutex)(&steam->report_mutex); + return steam_send_report_byte(steam, ID_DONGLE_GET_WIRELESS_STATE); } /* @@ -1193,6 +1201,7 @@ static void steam_mode_switch_cb(struct work_struct *work) return; steam->gamepad_mode = !steam->gamepad_mode; + hid_dbg(steam->hdev, "%s: switching gamepad mode to %i\n", __func__, steam->gamepad_mode); if (steam->gamepad_mode) steam_set_lizard_mode(steam, false); else { @@ -1839,6 +1848,7 @@ static void steam_do_deck_input_event(struct steam_device *steam, steam->did_mode_switch = false; cancel_delayed_work(&steam->mode_switch); } else if (!steam->client_opened && start_pressed && !steam->did_mode_switch) { + hid_dbg(steam->hdev, "%s: doing mode switch\n", __func__); steam->did_mode_switch = true; schedule_delayed_work(&steam->mode_switch, 45 * HZ / 100); } -- 2.54.0