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Date: Tue, 4 Apr 2023 14:15:14 +0200 From: Louis Morhet To: gupt21@gmail.com, jikos@kernel.org, benjamin.tissoires@redhat.com Cc: linux-i2c@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] HID: mcp2221: fix report layout for gpio get Message-ID: <945967fbab56d53f9630ad3844b64734f8c3107e.1680602387.git.lmorhet@kalrayinc.com> References: Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: LNXP123CA0014.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:d2::26) To MR1P264MB1555.FRAP264.PROD.OUTLOOK.COM (2603:10a6:501:15::18) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MR1P264MB1555:EE_|MR1P264MB1732:EE_ X-MS-Office365-Filtering-Correlation-Id: c1f51f09-8e7b-45d7-b9d5-08db35064083 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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However, the driver describes it with a wrong order: direction followed by value. Fix the structure representing the report answered by the chip to the GET GPIO VALUES command. Fixes commit 567b8e9fed8a ("HID: mcp2221: Fix GPIO output handling") Signed-off-by: Louis Morhet --- drivers/hid/hid-mcp2221.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hid/hid-mcp2221.c b/drivers/hid/hid-mcp2221.c index f74a977cf8f8..fa20ed4d395a 100644 --- a/drivers/hid/hid-mcp2221.c +++ b/drivers/hid/hid-mcp2221.c @@ -79,8 +79,8 @@ struct mcp_get_gpio { u8 cmd; u8 dummy; struct { - u8 direction; u8 value; + u8 direction; } gpio[MCP_NGPIO]; } __packed; From patchwork Tue Apr 4 12:15:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Louis Morhet X-Patchwork-Id: 670650 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68004C6FD1D for ; Tue, 4 Apr 2023 12:21:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234159AbjDDMVA (ORCPT ); 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b=KDLbSh+Wah1GB5lZNb4l38KIjqZE8FC5u6jhoxp80QQgx9ak5WTRuhhHgLLSC9WKgTAdUkoJ4TJ2IQJ+aK0viNZ9UZ/NHFfRjBI5H7teSZIWZsJJIZRERQsW5gIBM2e3gwPgVwj0cg+vBmQkYvMnkBaghbTa4jL/cxEaB6AxD7+mbnPDHlnDBLpiMONxWZRmdveJBMQRFvvTuOziaDouyQ2cMKVoy1HCYmYBo//FaSS2QnO+/3e8cjOmCs5IlMAnvg7uvqqgaTBVRRXblxN+6IbWY8Du3PfAjJRbkLO3SVIUslky0vacQqSoga+xsYKdDxOwURs62dDZPP2zUWF4YQ== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=kalrayinc.com; Date: Tue, 4 Apr 2023 14:15:25 +0200 From: Louis Morhet To: gupt21@gmail.com, jikos@kernel.org, benjamin.tissoires@redhat.com Cc: linux-i2c@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] HID: mcp2221: fix get and get_direction for gpio Message-ID: References: Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: LO6P123CA0029.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:313::14) To MR1P264MB1555.FRAP264.PROD.OUTLOOK.COM (2603:10a6:501:15::18) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MR1P264MB1555:EE_|MR1P264MB1732:EE_ X-MS-Office365-Filtering-Correlation-Id: 14fbad16-0aa2-4cbf-262c-08db350646b8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: kalrayinc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 14fbad16-0aa2-4cbf-262c-08db350646b8 X-MS-Exchange-CrossTenant-AuthSource: MR1P264MB1555.FRAP264.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Apr 2023 12:15:27.6218 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 8931925d-7620-4a64-b7fe-20afd86363d3 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: q91uFvRvdKxBtrp4RBAv4opfyPl1M5pOXCOiBpYFpS6aWfSHAeP1LOQxQsB2uU9Hbglag2q19OiEGebh44MFwQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MR1P264MB1732 X-ALTERMIMEV2_out: done Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org The mcp2221_raw_event retrieves the value and direction of gpio on the same command, by setting the value on mcp->status and the direction on mcp->gpio_dir; and the offset at which they are read is based on mcp->gp_idx, set by the gpiochip callbacks. However, the individual gpiochip calls set the index to look for directly on the field they want to track. This create a "double offset" in the final read in the response report. Align the behaviour of mcp2221_raw_event and mcp_gpio_get/mcp_gpio_get_direction by putting gp_idx on those calls to the base offset of the gpio status struct. Signed-off-by: Louis Morhet --- drivers/hid/hid-mcp2221.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hid/hid-mcp2221.c b/drivers/hid/hid-mcp2221.c index fa20ed4d395a..72883e0ce757 100644 --- a/drivers/hid/hid-mcp2221.c +++ b/drivers/hid/hid-mcp2221.c @@ -594,7 +594,7 @@ static int mcp_gpio_get(struct gpio_chip *gc, mcp->txbuf[0] = MCP2221_GPIO_GET; - mcp->gp_idx = offsetof(struct mcp_get_gpio, gpio[offset].value); + mcp->gp_idx = offsetof(struct mcp_get_gpio, gpio[offset]); mutex_lock(&mcp->lock); ret = mcp_send_data_req_status(mcp, mcp->txbuf, 1); @@ -675,7 +675,7 @@ static int mcp_gpio_get_direction(struct gpio_chip *gc, mcp->txbuf[0] = MCP2221_GPIO_GET; - mcp->gp_idx = offsetof(struct mcp_get_gpio, gpio[offset].direction); + mcp->gp_idx = offsetof(struct mcp_get_gpio, gpio[offset]); mutex_lock(&mcp->lock); ret = mcp_send_data_req_status(mcp, mcp->txbuf, 1);