From patchwork Fri Dec 6 08:26:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 13896641 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (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 B88E51FCF6D; Fri, 6 Dec 2024 08:27:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733473658; cv=none; b=QqjwAxjXcLJT0fyZpvDxWI7pS31sySux0tv8ib4Wv3/qIzP3s1zervoZgZ1hh4ggQPNyqQYiZIxyNanftLlAfVYZaLYJh/HUGgpZy5cOEiKX38c0oZutSfY/Pnxto0+rGCicE3wsnYk2OKq2KZZIDfvGX7UxwPd9+l11tpKU0bU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733473658; c=relaxed/simple; bh=wawwTlrATwlu77FUSKQv7xr0i0QLJWn85E9bt6sA41A=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=WSMhGgqYH00GP0uui/LxmquDJXiJtk1iAR6afmPOhze2SHK6YqDtkJ5niTUSXskrPsob+X+yZrAZVv1LBB10KMj7ccespEFEGkY9C2xFKfVhb3SVrC/GB6TmGY+djxzI5fmbJcAyplGRgbUIszxTdPdaicbjwLdhxDWyYJ1+4sQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=C/PDgfQT; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="C/PDgfQT" Received: from [127.0.1.1] (91-157-155-49.elisa-laajakaista.fi [91.157.155.49]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 569EEB2B; Fri, 6 Dec 2024 09:26:52 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1733473612; bh=wawwTlrATwlu77FUSKQv7xr0i0QLJWn85E9bt6sA41A=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=C/PDgfQT4eVA6Lwkuv1VjeFvIq+d1ZHU7P43n2aq4GrgHKTLIeSbgVA7dOEAJvF5r iHUdkcBZHL+FoeNdf0B9TUMG/GRRPCLqtHDD7sUHc1WRFVioeVl8TLVUbFCaE/2tTd mne9vdsIRAcp8wB4WHe7vdS8Nyeaj78DHSYg+k/k= From: Tomi Valkeinen Date: Fri, 06 Dec 2024 10:26:49 +0200 Subject: [PATCH v4 13/15] media: i2c: ds90ub913: Add error handling to ub913_hw_init() Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241206-ub9xx-fixes-v4-13-466786eec7cc@ideasonboard.com> References: <20241206-ub9xx-fixes-v4-0-466786eec7cc@ideasonboard.com> In-Reply-To: <20241206-ub9xx-fixes-v4-0-466786eec7cc@ideasonboard.com> To: Mauro Carvalho Chehab , Sakari Ailus , Hans Verkuil , Andy Shevchenko , Jai Luthra Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Tomi Valkeinen X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1937; i=tomi.valkeinen@ideasonboard.com; h=from:subject:message-id; bh=wawwTlrATwlu77FUSKQv7xr0i0QLJWn85E9bt6sA41A=; b=owEBbQKS/ZANAwAIAfo9qoy8lh71AcsmYgBnUrVgIo01TOohQgvPnFdvO7BBKWuIN4R5Ztks5 4Bv0NO6QcCJAjMEAAEIAB0WIQTEOAw+ll79gQef86f6PaqMvJYe9QUCZ1K1YAAKCRD6PaqMvJYe 9c0VD/0c/G3Ly4P2AuQu5pGjRNxDVpgwdkbrWB8zyH9QPVZ0Y4SLOkPoZnzqqxxTowd0ucLKubG MVs8LQqzwl+2t8veCEGjevi9pMux5VcNaKswXVx5P8+A+A2Qez+jfJmrD805EsnyNKZJBtTw5oV gBBNbtxlkLYiNhsCPdq5ZcefFG72C/U2RiYLZ06UdDukyIbB4V5jp16wX0pzLfmNxbd3L5ZDLhQ odYaIKIenlMyflmhEYB+ayB+DRj6N+NBMDZN2IEguywydCGL+EguwPFZqOHLA/AR751oay6WYh0 rTmoalKIUzJ4m9xrxCHVcHBbdm3LQpMzuO790UwbjUhZZ25XNHnrvMJbW6pD4GTHIt3Vf/d8xC7 z/0fjqYbqJjfArbFGn2zLV3uf3HnLC7wJgUeXxkYC9JHwq4unQzJFFN0g2NfualnjKkEhesxtmk 4wrv0wrHsEW0n4t7D9NR/I2Fkh6jvlWwtF07aJGpVS9bfrwgNY5MnuSJHRlBU83b91l6iwPWJcl WDFSjceiNmMTWhEZrwFEt5V2L06SLgnZoYlL/VPQoo5urjKJRAwaKCJYVT7QXMbWiYVg9SVKMCm 2zQ7o3ukTuZY9xf9nUMF8T+q868dfrOKM4tV7aJi974N1Rwsc7GoTaT/0C0ik2LCQRhNMS+IoHc 59xc4o6FRooXfLA== X-Developer-Key: i=tomi.valkeinen@ideasonboard.com; a=openpgp; fpr=C4380C3E965EFD81079FF3A7FA3DAA8CBC961EF5 Add error handling to ub913_hw_init() using a new helper function, ub913_update_bits(). Reported-by: Sakari Ailus Link: https://lore.kernel.org/all/Zv40EQSR__JDN_0M@kekkonen.localdomain/ Reviewed-by: Jai Luthra Signed-off-by: Tomi Valkeinen --- drivers/media/i2c/ds90ub913.c | 25 +++++++++++++++++++++---- 1 file changed, 21 insertions(+), 4 deletions(-) diff --git a/drivers/media/i2c/ds90ub913.c b/drivers/media/i2c/ds90ub913.c index b5375d736629..7670d6c82d92 100644 --- a/drivers/media/i2c/ds90ub913.c +++ b/drivers/media/i2c/ds90ub913.c @@ -8,6 +8,7 @@ * Copyright (c) 2023 Tomi Valkeinen */ +#include #include #include #include @@ -146,6 +147,19 @@ static int ub913_write(const struct ub913_data *priv, u8 reg, u8 val) return ret; } +static int ub913_update_bits(const struct ub913_data *priv, u8 reg, u8 mask, + u8 val) +{ + int ret; + + ret = regmap_update_bits(priv->regmap, reg, mask, val); + if (ret < 0) + dev_err(&priv->client->dev, + "Cannot update register 0x%02x %d!\n", reg, ret); + + return ret; +} + /* * GPIO chip */ @@ -733,10 +747,13 @@ static int ub913_hw_init(struct ub913_data *priv) if (ret) return dev_err_probe(dev, ret, "i2c master init failed\n"); - ub913_read(priv, UB913_REG_GENERAL_CFG, &v); - v &= ~UB913_REG_GENERAL_CFG_PCLK_RISING; - v |= priv->pclk_polarity_rising ? UB913_REG_GENERAL_CFG_PCLK_RISING : 0; - ub913_write(priv, UB913_REG_GENERAL_CFG, v); + ret = ub913_update_bits(priv, UB913_REG_GENERAL_CFG, + UB913_REG_GENERAL_CFG_PCLK_RISING, + FIELD_PREP(UB913_REG_GENERAL_CFG_PCLK_RISING, + priv->pclk_polarity_rising)); + + if (ret) + return ret; return 0; }