linux-kernel - [PATCH 3/3] iio: adc: ad7944: use devm_spi_optimize

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Date: Fri, 21 Jun 2024 15:51:32 -0500
From: David Lechner <dlechner@...libre.com>
To: Mark Brown <broonie@...nel.org>,
	Jonathan Cameron <jic23@...nel.org>
Cc: David Lechner <dlechner@...libre.com>,
	Michael Hennerich <michael.hennerich@...log.com>,
	Nuno Sá <nuno.sa@...log.com>,
	Marcelo Schmitt <marcelo.schmitt@...log.com>,
	Jonathan Corbet <corbet@....net>,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-spi@...r.kernel.org,
	linux-iio@...r.kernel.org
Subject: [PATCH 3/3] iio: adc: ad7944: use devm_spi_optimize_message()

Use new devm_spi_optimize_message() helper to simplify repeated code
in the ad7944 driver.

Signed-off-by: David Lechner <dlechner@...libre.com>
---
 drivers/iio/adc/ad7944.c | 26 +++-----------------------
 1 file changed, 3 insertions(+), 23 deletions(-)

diff --git a/drivers/iio/adc/ad7944.c b/drivers/iio/adc/ad7944.c
index 4602ab5ed2a6..a6ac17c13a29 100644
--- a/drivers/iio/adc/ad7944.c
+++ b/drivers/iio/adc/ad7944.c
@@ -134,18 +134,12 @@ AD7944_DEFINE_CHIP_INFO(ad7985, ad7944, 16, 0);
 /* fully differential */
 AD7944_DEFINE_CHIP_INFO(ad7986, ad7986, 18, 1);
 
-static void ad7944_unoptimize_msg(void *msg)
-{
-	spi_unoptimize_message(msg);
-}
-
 static int ad7944_3wire_cs_mode_init_msg(struct device *dev, struct ad7944_adc *adc,
 					 const struct iio_chan_spec *chan)
 {
 	unsigned int t_conv_ns = adc->always_turbo ? adc->timing_spec->turbo_conv_ns
 						   : adc->timing_spec->conv_ns;
 	struct spi_transfer *xfers = adc->xfers;
-	int ret;
 
 	/*
 	 * NB: can get better performance from some SPI controllers if we use
@@ -175,11 +169,7 @@ static int ad7944_3wire_cs_mode_init_msg(struct device *dev, struct ad7944_adc *
 
 	spi_message_init_with_transfers(&adc->msg, xfers, 3);
 
-	ret = spi_optimize_message(adc->spi, &adc->msg);
-	if (ret)
-		return ret;
-
-	return devm_add_action_or_reset(dev, ad7944_unoptimize_msg, &adc->msg);
+	return devm_spi_optimize_message(dev, adc->spi, &adc->msg);
 }
 
 static int ad7944_4wire_mode_init_msg(struct device *dev, struct ad7944_adc *adc,
@@ -188,7 +178,6 @@ static int ad7944_4wire_mode_init_msg(struct device *dev, struct ad7944_adc *adc
 	unsigned int t_conv_ns = adc->always_turbo ? adc->timing_spec->turbo_conv_ns
 						   : adc->timing_spec->conv_ns;
 	struct spi_transfer *xfers = adc->xfers;
-	int ret;
 
 	/*
 	 * NB: can get better performance from some SPI controllers if we use
@@ -209,11 +198,7 @@ static int ad7944_4wire_mode_init_msg(struct device *dev, struct ad7944_adc *adc
 
 	spi_message_init_with_transfers(&adc->msg, xfers, 2);
 
-	ret = spi_optimize_message(adc->spi, &adc->msg);
-	if (ret)
-		return ret;
-
-	return devm_add_action_or_reset(dev, ad7944_unoptimize_msg, &adc->msg);
+	return devm_spi_optimize_message(dev, adc->spi, &adc->msg);
 }
 
 static int ad7944_chain_mode_init_msg(struct device *dev, struct ad7944_adc *adc,
@@ -221,7 +206,6 @@ static int ad7944_chain_mode_init_msg(struct device *dev, struct ad7944_adc *adc
 				      u32 n_chain_dev)
 {
 	struct spi_transfer *xfers = adc->xfers;
-	int ret;
 
 	/*
 	 * NB: SCLK has to be low before we toggle CS to avoid triggering the
@@ -249,11 +233,7 @@ static int ad7944_chain_mode_init_msg(struct device *dev, struct ad7944_adc *adc
 
 	spi_message_init_with_transfers(&adc->msg, xfers, 2);
 
-	ret = spi_optimize_message(adc->spi, &adc->msg);
-	if (ret)
-		return ret;
-
-	return devm_add_action_or_reset(dev, ad7944_unoptimize_msg, &adc->msg);
+	return devm_spi_optimize_message(dev, adc->spi, &adc->msg);
 }
 
 /**

-- 
2.45.2