From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from polaris.svanheule.net (polaris.svanheule.net [84.16.241.116]) (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 AD6DB27F19F for ; Fri, 20 Feb 2026 16:01:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=84.16.241.116 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771603282; cv=none; b=iMMv+SvxVysin5zAVwgaPknH5OLGMo8U58XhhsBAwWVhuBhJAIm1t6c9ybnKK3BriheQX6hce/BthNK8cW8BSazf85p/p8pprrDqT2sNgBYON23363snjK+fIenfCg3juTATQ8NxwT7ah1k502/rFQAJL/5uMGbUzRFZaV09twI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771603282; c=relaxed/simple; bh=0EEHgq7vufSJu/5t7dOdkpzx4A7oPsin7nUg4OdVInQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=daAxs3vXp1m1uSmur3llU1seKZ+QVlI5BGTsBu73YXEtpLJX0ayNB1BvFPHO8V1cU+znbWkEQ0P88u0Sw/JqVPV8MQiYqTVkFo1qX9gLzz8y7uSVyi36JFiE73epPkd5FnAY8PkKj09FwzcDhdjY8uZ2uQNsqJVoxlw/EXTW11g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=svanheule.net; spf=pass smtp.mailfrom=svanheule.net; dkim=pass (2048-bit key) header.d=svanheule.net header.i=@svanheule.net header.b=J4FmwRAP; arc=none smtp.client-ip=84.16.241.116 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=svanheule.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=svanheule.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=svanheule.net header.i=@svanheule.net header.b="J4FmwRAP" Received: from terra.vega.svanheule.net (2a02-1812-162c-8f00-1e2d-b404-3319-eba8.ip6.access.telenet.be [IPv6:2a02:1812:162c:8f00:1e2d:b404:3319:eba8]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: sander@svanheule.net) by polaris.svanheule.net (Postfix) with ESMTPSA id 4BAEC6E8685; Fri, 20 Feb 2026 17:01:20 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=svanheule.net; s=mail1707; t=1771603280; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=hnZt++PoUunC528W+I+4Fgw4aSgjLza6ztVSq5VH0C8=; b=J4FmwRAPfI2dMHL8NFdr76WsYSGk+njekbNVsaSA4YAVYwzsOe8TaeAimumm3NHQ/NWk2v pbjATKFKqWv8EAQKbTwQiIYnEionzIaRaN+tcW5NiQFhGywxIjEYELQ7cb/wy1gHrKuqQc REb2jdzKxBAmNcJMW33hiYPJmUFGFZTiAZ/5W3fIe+8oI5lsCeBvHPyUTrcTq0a2nEz/U0 zJcXxRaFio7FiJ5FldRUGRRwFGxo7ZrlGk0vhjrmYvDYGqsFhU+B2aRGqIgQsr35Q9vgjI fZUVzDJfenmQPRZ/Lk7+iRO3Cv3aCqwYPizzafVxT+jk+D2whGchxBB2KCpKig== From: Sander Vanheule To: Mark Brown Cc: linux-kernel@vger.kernel.org, Sander Vanheule Subject: [PATCH v2 2/2] regmap: define cleanup helper for regmap_field Date: Fri, 20 Feb 2026 17:01:12 +0100 Message-ID: <20260220160112.543391-2-sander@svanheule.net> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260220160112.543391-1-sander@svanheule.net> References: <20260220160112.543391-1-sander@svanheule.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit For temporary field allocation, the user has to perform manual cleanup, or rely on devm_regmap_field_alloc() to (eventually) clean up the allocated resources when an error occurs. Add a cleanup helper that takes care of freeing the allocated regmap_field whenever it goes out of scope. This can simplify this example: struct regmap_field *field = regmap_field_alloc(...); if (IS_ERR(field)) return PTR_ERR(field); int err = regmap_field_read(...); if (err) goto out; /* some logic that may also error */ err = regmap_field_write(...); out: regmap_field_free(field); return err; into the shorter: struct regmap_field *field __free(regmap_field) = regmap_field_alloc(...); if (IS_ERR(field)) return PTR_ERR(field); int err = regmap_field_read(...); if (err) return err; /* some logic that may also error */ return regmap_field_write(...); Signed-off-by: Sander Vanheule --- Changes since v1: - Fix error handling of regmap_field_alloc() in example - Make example less trivial --- include/linux/regmap.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/regmap.h b/include/linux/regmap.h index c8a6a05bdba1..f1c5cb63c171 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -11,6 +11,7 @@ */ #include +#include #include #include #include @@ -1460,6 +1461,8 @@ struct regmap_field *regmap_field_alloc(struct regmap *regmap, struct reg_field reg_field); void regmap_field_free(struct regmap_field *field); +DEFINE_FREE(regmap_field, struct regmap_field *, if (_T) regmap_field_free(_T)) + struct regmap_field *devm_regmap_field_alloc(struct device *dev, struct regmap *regmap, struct reg_field reg_field); void devm_regmap_field_free(struct device *dev, struct regmap_field *field); -- 2.53.0