From patchwork Mon Jan 15 14:45:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Max Staudt X-Patchwork-Id: 762921 Received: from mail.enpas.org (zhong.enpas.org [46.38.239.100]) (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 8BFF7175B2; Mon, 15 Jan 2024 14:48:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=enpas.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=enpas.org Received: from [127.0.0.1] (localhost [127.0.0.1]) by mail.enpas.org (Postfix) with ESMTPSA id 7859A10164D; Mon, 15 Jan 2024 14:48:52 +0000 (UTC) From: Max Staudt To: Roderick Colenbrander , Jiri Kosina , Benjamin Tissoires Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, max@enpas.org Subject: [PATCH v1 4/7] HID: playstation: DS4: Don't fail on calibration data request Date: Mon, 15 Jan 2024 23:45:35 +0900 Message-Id: <20240115144538.12018-5-max@enpas.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240115144538.12018-1-max@enpas.org> References: <20240115144538.12018-1-max@enpas.org> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Some third-party controllers can't report calibration data for the gyro/accelerometer. We can still use the gamepad as-is, so let's do that. Signed-off-by: Max Staudt --- drivers/hid/hid-playstation.c | 28 +++++++++++++++++----------- 1 file changed, 17 insertions(+), 11 deletions(-) diff --git a/drivers/hid/hid-playstation.c b/drivers/hid/hid-playstation.c index 12321cae4416..2bf44bd3cc8a 100644 --- a/drivers/hid/hid-playstation.c +++ b/drivers/hid/hid-playstation.c @@ -1778,8 +1778,10 @@ static int dualshock4_get_calibration_data(struct dualshock4 *ds4) int retries; buf = kzalloc(DS4_FEATURE_REPORT_CALIBRATION_SIZE, GFP_KERNEL); - if (!buf) - return -ENOMEM; + if (!buf) { + ret = -ENOMEM; + goto no_buffer_tail_check; + } /* We should normally receive the feature report data we asked * for, but hidraw applications such as Steam can issue feature @@ -1798,24 +1800,25 @@ static int dualshock4_get_calibration_data(struct dualshock4 *ds4) hid_err(hdev, "Failed to retrieve DualShock4 calibration info: %d\n", ret); ret = -EILSEQ; - goto err_free; } else { break; } } } else { /* Bluetooth */ buf = kzalloc(DS4_FEATURE_REPORT_CALIBRATION_BT_SIZE, GFP_KERNEL); - if (!buf) - return -ENOMEM; + if (!buf) { + ret = -ENOMEM; + goto no_buffer_tail_check; + } ret = ps_get_report(hdev, DS4_FEATURE_REPORT_CALIBRATION_BT, buf, DS4_FEATURE_REPORT_CALIBRATION_BT_SIZE, true); - if (ret) { + + if (ret) hid_err(hdev, "Failed to retrieve DualShock4 calibration info: %d\n", ret); - goto err_free; - } } + /* Parse buffer. If the transfer failed, this safely copies zeroes. */ gyro_pitch_bias = get_unaligned_le16(&buf[1]); gyro_yaw_bias = get_unaligned_le16(&buf[3]); gyro_roll_bias = get_unaligned_le16(&buf[5]); @@ -1867,6 +1870,11 @@ static int dualshock4_get_calibration_data(struct dualshock4 *ds4) ds4->gyro_calib_data[2].sens_denom = abs(gyro_roll_plus - gyro_roll_bias) + abs(gyro_roll_minus - gyro_roll_bias); + /* Done parsing the buffer, so let's free it. */ + kfree(buf); + +no_buffer_tail_check: + /* * Sanity check gyro calibration data. This is needed to prevent crashes * during report handling of virtual, clone or broken devices not implementing @@ -1919,8 +1927,6 @@ static int dualshock4_get_calibration_data(struct dualshock4 *ds4) } } -err_free: - kfree(buf); return ret; } @@ -2571,7 +2577,7 @@ static struct ps_device *dualshock4_create(struct hid_device *hdev) ret = dualshock4_get_calibration_data(ds4); if (ret) { hid_err(hdev, "Failed to get calibration data from DualShock4\n"); - goto err; + hid_err(hdev, "Gyroscope and accelerometer will be inaccurate.\n"); } ds4->gamepad = ps_gamepad_create(hdev, dualshock4_play_effect);