From patchwork Mon Apr 7 15:45:01 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 878934 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) (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 60D20205E0D; Mon, 7 Apr 2025 15:49:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.15 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744040988; cv=none; b=oounBGaUuKGDNzVAxSi02VTyLmdw587nKIxjKCkyc0M8JlBiRRyEV0Ok8YBwwlZ3I2VAONrRQduo52VQzezG0PgBJnT3yjBSvV/sHxKmMIu509ipnWcSwDVvONDW43J5rMuNkWvZd1mOHF4JHvL64G/aC2KKWI93EvkfaCfj9G8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744040988; c=relaxed/simple; bh=ocKwfB6Vxkwa5A0pOC/2iu6YUSeofDIGwtON0zWaRqc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PY+tbQzRjKrY6SoLU1fnHISmA6DQFJWhI3/hIS6tW9SHJqahvkb2nFOPQ+IhEOh4QG0GpX9C0VSm2dmmZWv7X0T/8m0X1i6cvHsHuaH4QW1v5B12xHGmso8hjGXQAIQ/9cbTVOJoH+lPDXaB1saNDnVRVnbnb0rmBkB/kNfZ6no= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=AVMpubRv; arc=none smtp.client-ip=192.198.163.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="AVMpubRv" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1744040986; x=1775576986; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ocKwfB6Vxkwa5A0pOC/2iu6YUSeofDIGwtON0zWaRqc=; b=AVMpubRvpRfnZ0N/RquR/RrtFZ/POLmgrzn425VcwH45bRq2AeriKcXi X3it7PwtAmZ2xHleZmyAJ6duN/he05OQcANnlnnQ2/gOzLbuSP5K0wn2l T8Ie3wcuTkogZ1gbBzhaQOHX+TGVz2FtSzwJCGpROLLXluxs1Oq79pO8U zpSGPukzDps5IBfV24rYIZwImXsOT+vQiiVBVs7DqDaeGBnANrBavq02k rRMeFfuaH7w02kOvTrro+BRO8mHGCE6boE1GBv1psoVerfGAlmrVNmm/X LvVYmIKJOlRwJkVZWqpOyzKZtC+MnkmrwxNedodMvdXtSfEHAsyOulD4V w==; X-CSE-ConnectionGUID: ryl0L6oPQTuPKj2mqpjBkA== X-CSE-MsgGUID: YkcswM17QKG6SGI3DNyQVg== X-IronPort-AV: E=McAfee;i="6700,10204,11397"; a="45555078" X-IronPort-AV: E=Sophos;i="6.15,194,1739865600"; d="scan'208";a="45555078" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Apr 2025 08:49:46 -0700 X-CSE-ConnectionGUID: MC8pyHIATC+QncCGO7ygBw== X-CSE-MsgGUID: sQ8uBaVGTxKz8/ZnJix3sg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,194,1739865600"; d="scan'208";a="158986668" Received: from black.fi.intel.com ([10.237.72.28]) by orviesa002.jf.intel.com with ESMTP; 07 Apr 2025 08:49:43 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id BF6882E4; Mon, 07 Apr 2025 18:49:38 +0300 (EEST) From: Andy Shevchenko To: Andy Shevchenko , Sakari Ailus , Mauro Carvalho Chehab , Tomi Valkeinen , Jai Luthra , Wolfram Sang , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org Cc: Mauro Carvalho Chehab Subject: [PATCH v3 5/7] i2c: core: Do not dereference fwnode in struct device Date: Mon, 7 Apr 2025 18:45:01 +0300 Message-ID: <20250407154937.744466-6-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250407154937.744466-1-andriy.shevchenko@linux.intel.com> References: <20250407154937.744466-1-andriy.shevchenko@linux.intel.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In order to make the underneath API easier to change in the future, prevent users from dereferencing fwnode from struct device. Instead, use the specific device_set_node() API for that. Tested-by: Tomi Valkeinen Signed-off-by: Andy Shevchenko --- drivers/i2c/i2c-core-base.c | 18 ++++++++++-------- drivers/i2c/i2c-core-of.c | 1 - 2 files changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index c92badadd47a..d9e2f9559ce4 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -965,6 +965,7 @@ static void i2c_unlock_addr(struct i2c_adapter *adap, unsigned short addr, struct i2c_client * i2c_new_client_device(struct i2c_adapter *adap, struct i2c_board_info const *info) { + struct fwnode_handle *fwnode; struct i2c_client *client; bool need_put = false; int status; @@ -1005,18 +1006,19 @@ i2c_new_client_device(struct i2c_adapter *adap, struct i2c_board_info const *inf client->dev.parent = &client->adapter->dev; client->dev.bus = &i2c_bus_type; client->dev.type = &i2c_client_type; - client->dev.of_node = of_node_get(info->of_node); - client->dev.fwnode = info->fwnode; device_enable_async_suspend(&client->dev); + fwnode = info->fwnode ?: of_fwnode_handle(info->of_node); + device_set_node(&client->dev, fwnode_handle_get(fwnode)); + if (info->swnode) { status = device_add_software_node(&client->dev, info->swnode); if (status) { dev_err(&adap->dev, "Failed to add software node to client %s: %d\n", client->name, status); - goto out_err_put_of_node; + goto out_err_put_fwnode; } } @@ -1035,8 +1037,8 @@ i2c_new_client_device(struct i2c_adapter *adap, struct i2c_board_info const *inf out_remove_swnode: device_remove_software_node(&client->dev); need_put = true; -out_err_put_of_node: - of_node_put(info->of_node); +out_err_put_fwnode: + fwnode_handle_put(fwnode); out_err: dev_err(&adap->dev, "Failed to register i2c client %s at 0x%02x (%d)\n", @@ -1064,11 +1066,11 @@ void i2c_unregister_device(struct i2c_client *client) return; fwnode = dev_fwnode(&client->dev); - if (is_of_node(fwnode)) { + if (is_of_node(fwnode)) of_node_clear_flag(to_of_node(fwnode), OF_POPULATED); - of_node_put(client->dev.of_node); - } else if (is_acpi_device_node(fwnode)) + else if (is_acpi_device_node(fwnode)) acpi_device_clear_enumerated(to_acpi_device_node(fwnode)); + fwnode_handle_put(fwnode); device_remove_software_node(&client->dev); device_unregister(&client->dev); diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c index 02feee6c9ba9..eb7fb202355f 100644 --- a/drivers/i2c/i2c-core-of.c +++ b/drivers/i2c/i2c-core-of.c @@ -49,7 +49,6 @@ int of_i2c_get_board_info(struct device *dev, struct device_node *node, } info->addr = addr; - info->of_node = node; info->fwnode = of_fwnode_handle(node); if (of_property_read_bool(node, "host-notify"))