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[98.183.112.25]) by smtp.gmail.com with ESMTPSA id 5614622812f47-3d5345e584dsm428089b6e.55.2024.06.21.13.51.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Jun 2024 13:51:38 -0700 (PDT) From: David Lechner To: Mark Brown , Jonathan Cameron Cc: David Lechner , Michael Hennerich , =?utf-8?q?Nuno_S=C3=A1?= , Marcelo Schmitt , Jonathan Corbet , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, linux-iio@vger.kernel.org Subject: [PATCH 2/3] spi: add devm_spi_optimize_message() helper Date: Fri, 21 Jun 2024 15:51:31 -0500 Message-ID: <20240621-devm_spi_optimize_message-v1-2-3f9dcba6e95e@baylibre.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240621-devm_spi_optimize_message-v1-0-3f9dcba6e95e@baylibre.com> References: <20240621-devm_spi_optimize_message-v1-0-3f9dcba6e95e@baylibre.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Mailer: b4 0.12.4 This adds a new helper function devm_spi_optimize_message() that automatically registers spi_unoptimize_message() to be called when the device is removed. Signed-off-by: David Lechner --- Documentation/driver-api/driver-model/devres.rst | 1 + drivers/spi/spi.c | 27 ++++++++++++++++++++++++ include/linux/spi/spi.h | 2 ++ 3 files changed, 30 insertions(+) diff --git a/Documentation/driver-api/driver-model/devres.rst b/Documentation/driver-api/driver-model/devres.rst index a1c17bcae68d..ac9ee7441887 100644 --- a/Documentation/driver-api/driver-model/devres.rst +++ b/Documentation/driver-api/driver-model/devres.rst @@ -464,6 +464,7 @@ SLAVE DMA ENGINE SPI devm_spi_alloc_master() devm_spi_alloc_slave() + devm_spi_optimize_message() devm_spi_register_controller() devm_spi_register_host() devm_spi_register_target() diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 54cbe652a4df..3f953504244b 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -4358,6 +4358,33 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message) return ctlr->transfer(spi, message); } +static void devm_spi_unoptimize_message(void *msg) +{ + spi_unoptimize_message(msg); +} + +/** + * devm_spi_optimize_message - managed version of spi_optimize_message() + * @dev: the device that manages @msg (usually @spi->dev) + * @spi: the device that will be used for the message + * @msg: the message to optimize + * Return: zero on success, else a negative error code + * + * spi_unoptimize_message() will automatically be called when the device is + * removed. + */ +int devm_spi_optimize_message(struct device *dev, struct spi_device *spi, + struct spi_message *msg) +{ + int ret; + + ret = spi_optimize_message(spi, msg); + if (ret) + return ret; + + return devm_add_action_or_reset(dev, devm_spi_unoptimize_message, msg); +} + /** * spi_async - asynchronous SPI transfer * @spi: device with which data will be exchanged diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 85785bcd20c1..a9388714e7e7 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -1272,6 +1272,8 @@ static inline void spi_message_free(struct spi_message *m) extern int spi_optimize_message(struct spi_device *spi, struct spi_message *msg); extern void spi_unoptimize_message(struct spi_message *msg); +extern int devm_spi_optimize_message(struct device *dev, struct spi_device *spi, + struct spi_message *msg); extern int spi_setup(struct spi_device *spi); extern int spi_async(struct spi_device *spi, struct spi_message *message);