From patchwork Mon Oct 7 08:37:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matteo Martelli X-Patchwork-Id: 13824331 Received: from mail-lf1-f52.google.com (mail-lf1-f52.google.com [209.85.167.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7C4E118CBED; Mon, 7 Oct 2024 08:38:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.52 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728290289; cv=none; b=r/ULRZrgydR3pGBDgVveKNJ9KQp7CnHyH0AUuXRO/CjytybwxZCWsZORpZXl/QwrPki7n7dOg8BwIAyi42CP09URS+6HMl03MgNKwH47B8TGhYLPrQqteh2qmJZqCYbyg7o4/R0CC/Eto88jYj2R1FIEC54dRa9+Dz4q/KTUvUw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728290289; c=relaxed/simple; bh=nRhnNaDZCEdFpfuQY+d3PHGabxDhnUnJnKU7JXNt19E=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=LukWZePddPl5OrWDahB2Hl4HpGcgD7QYh14rq+ZLlPYI4jaE3Z5Cw2KYmUDIMaKSJGwmHLLLmOmMvFMekcEa/qkbqXQrMhp8uy7RKtJVyVi0jhmZpFYg1dR7hvJedB14AY4aNba1TknRU5uVuSC43YfKQE2W4IzqOalsZi33/m0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=DhEex6IZ; arc=none smtp.client-ip=209.85.167.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="DhEex6IZ" Received: by mail-lf1-f52.google.com with SMTP id 2adb3069b0e04-5398df2c871so4286580e87.1; Mon, 07 Oct 2024 01:38:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1728290286; x=1728895086; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=gd1iJo2Ae4EEednioqk/xw+7U1ML6e6KimnctnEpL5U=; b=DhEex6IZTBuoL/h0TVrtYH5BkcLgUVB09RbBq6fIZ4KDw4YN3uNVWbd01xgxH8LgXn FZy53g9T4XifEtRYpzFDMYag/A0xafyEPYhRxNwVw8EhsEjOG8baYBEOam2ooWRIudlt 9h8M+5QOR9gnM4Ui2dYU7zj2YcH6K43SePnkpvLYrkYQHBTMEZmg5mParisjggko99Xh N2AjWZHWGPExRbYNK6Tk3RpbSrBfObubno4T+OmBtIWSzPFBay7G3a6/w27XOz6OPPlI Gmt1Y0vHA5AzYwA43AVLL4Fj5t9XU+HjxvXNAD7oSOGjTb2b8q6CQBSEtGTzMoKImSQ1 mK4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728290286; x=1728895086; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gd1iJo2Ae4EEednioqk/xw+7U1ML6e6KimnctnEpL5U=; b=kRG/59G1AWffZtTPh5fqWjPcUEYON4pnrZvu5jCCsM9/muypz8SuZMeHph+pte1IDl sJTrebAvr+RBHuqYRvt3IOfo3N/vZC6ylDVAtG0XEwHiHY9RxdGqg++F5ik8+0RM5OVt WAqSh9xvST4gTZVLd8/sTAB8FctWdtyfCb7RDDUKf8S6H4AD+oM6FIj3DXO4i/v6XHy5 +foy8pOEldbOhOGeAW1PPGW1jjFDyZHsxGyCPzuvO2RauPHu150uIFYrNfgF973WjQGc xVtEBCsp0OVLjnxzwTc7rcHLEsitVhcnUWFfXGAECqdRwNJkHEzemvO5v0kQDWUFmvZk FbCQ== X-Forwarded-Encrypted: i=1; AJvYcCU5GL6wZ4htqKVvRbShwiZIr4UsevKlPwPH8eukiUXHm2gHNWZ0ZE/+/2rR6VqFIVLxdGFxAA3aTv8=@vger.kernel.org, AJvYcCUmKVSqXbnT46ub9dSmt+Z8ZT8wU4/4MkhSOOL4udpFYKKAiDKdCEsXeFAi0yaJBUptpnP+f7mBmL1k9g==@vger.kernel.org, AJvYcCUy2tdtKNxM+fFTZx8uiIh3s6hDx4RZ3EMcNlzfov/9SyQf9JDphxQPpXt0LhMOdmc8g3HGeta60IaCf60=@vger.kernel.org X-Gm-Message-State: AOJu0Yz6e+/9zmlkO2MLaS7l92XjzCcGQViunjkNihToxTixT1nZrtia yJeMiTxk4XLx3lhiWorma0FUUoAH6ME2HYvDpUeX3SoBD/S9y3Dw X-Google-Smtp-Source: AGHT+IGnQ5d4feQXUX2RxM5Jec9R7d5ot/8bGk0KvZl8H4Q1K3oqOrca4l99vrGw2QCjarcKNAgaXQ== X-Received: by 2002:a05:6512:12d3:b0:535:69ee:9717 with SMTP id 2adb3069b0e04-539ab84a7cfmr5334883e87.3.1728290285315; Mon, 07 Oct 2024 01:38:05 -0700 (PDT) Received: from localhost (host-79-19-52-27.retail.telecomitalia.it. [79.19.52.27]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5c8e05a7e87sm2921949a12.24.2024.10.07.01.38.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Oct 2024 01:38:04 -0700 (PDT) From: Matteo Martelli Date: Mon, 07 Oct 2024 10:37:15 +0200 Subject: [PATCH v2 6/7] iio: consumers: release available info buffer copied from producer Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241007-iio-read-avail-release-v2-6-245002d5869e@gmail.com> References: <20241007-iio-read-avail-release-v2-0-245002d5869e@gmail.com> In-Reply-To: <20241007-iio-read-avail-release-v2-0-245002d5869e@gmail.com> To: Jonathan Cameron , Lars-Peter Clausen , Michael Hennerich , Alisa-Dariana Roman , Christian Eggers , Peter Rosin , Paul Cercueil , Sebastian Reichel Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-pm@vger.kernel.org, Matteo Martelli X-Mailer: b4 0.14.2 The iio_read_avail_channel_raw() inkern interface now allocates a copy of the available info buffer that must be freed after use. To do so, free the buffer in the consumers read_avail_release_resource callback. Signed-off-by: Matteo Martelli --- drivers/iio/afe/iio-rescale.c | 8 ++++++++ drivers/iio/dac/dpot-dac.c | 8 ++++++++ drivers/iio/multiplexer/iio-mux.c | 8 ++++++++ 3 files changed, 24 insertions(+) diff --git a/drivers/iio/afe/iio-rescale.c b/drivers/iio/afe/iio-rescale.c index 56e5913ab82d1c045c9ca27012008a4495502cbf..78bb86c291706748b4072a484532ad20c415ff9f 100644 --- a/drivers/iio/afe/iio-rescale.c +++ b/drivers/iio/afe/iio-rescale.c @@ -249,9 +249,17 @@ static int rescale_read_avail(struct iio_dev *indio_dev, } } +static void rescale_read_avail_release_res(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int *vals, long mask) +{ + kfree(vals); +} + static const struct iio_info rescale_info = { .read_raw = rescale_read_raw, .read_avail = rescale_read_avail, + .read_avail_release_resource = rescale_read_avail_release_res, }; static ssize_t rescale_read_ext_info(struct iio_dev *indio_dev, diff --git a/drivers/iio/dac/dpot-dac.c b/drivers/iio/dac/dpot-dac.c index 7332064d0852d979620f90066fb027f6f68f8c95..beec76247acb5170b81058d28a71ed17c831c905 100644 --- a/drivers/iio/dac/dpot-dac.c +++ b/drivers/iio/dac/dpot-dac.c @@ -108,6 +108,13 @@ static int dpot_dac_read_avail(struct iio_dev *indio_dev, return -EINVAL; } +static void dpot_dac_read_avail_release_res(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int *vals, long mask) +{ + kfree(vals); +} + static int dpot_dac_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) @@ -125,6 +132,7 @@ static int dpot_dac_write_raw(struct iio_dev *indio_dev, static const struct iio_info dpot_dac_info = { .read_raw = dpot_dac_read_raw, .read_avail = dpot_dac_read_avail, + .read_avail_release_resource = dpot_dac_read_avail_release_res, .write_raw = dpot_dac_write_raw, }; diff --git a/drivers/iio/multiplexer/iio-mux.c b/drivers/iio/multiplexer/iio-mux.c index 2953403bef53bbe47a97a8ab1c475ed88d7f86d2..31345437784b01c5d6f8ea70263f4c2574388e7a 100644 --- a/drivers/iio/multiplexer/iio-mux.c +++ b/drivers/iio/multiplexer/iio-mux.c @@ -142,6 +142,13 @@ static int mux_read_avail(struct iio_dev *indio_dev, return ret; } +static void mux_read_avail_release_res(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int *vals, long mask) +{ + kfree(vals); +} + static int mux_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) @@ -171,6 +178,7 @@ static int mux_write_raw(struct iio_dev *indio_dev, static const struct iio_info mux_info = { .read_raw = mux_read_raw, .read_avail = mux_read_avail, + .read_avail_release_resource = mux_read_avail_release_res, .write_raw = mux_write_raw, };