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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/iio/pressure/ms5611_spi.c
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@@ -1,33 +1,31 @@
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+// SPDX-License-Identifier: GPL-2.0
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 /*
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  * MS5611 pressure and temperature sensor driver (SPI bus)
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  *
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  * Copyright (c) Tomasz Duszynski <tduszyns@gmail.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  *
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  */
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 #include <linux/delay.h>
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 #include <linux/module.h>
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 #include <linux/spi/spi.h>
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-#include <linux/of_device.h>
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+#include <linux/mod_devicetable.h>
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+
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+#include <asm/unaligned.h>
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 #include "ms5611.h"
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-static int ms5611_spi_reset(struct device *dev)
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+static int ms5611_spi_reset(struct ms5611_state *st)
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 {
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 	u8 cmd = MS5611_RESET;
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-	struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev));
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 	return spi_write_then_read(st->client, &cmd, 1, NULL, 0);
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 }
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-static int ms5611_spi_read_prom_word(struct device *dev, int index, u16 *word)
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+static int ms5611_spi_read_prom_word(struct ms5611_state *st, int index,
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+				     u16 *word)
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 {
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 	int ret;
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-	struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev));
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 	ret = spi_w8r16be(st->client, MS5611_READ_PROM_WORD + (index << 1));
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 	if (ret < 0)
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@@ -38,26 +36,24 @@
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 	return 0;
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 }
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-static int ms5611_spi_read_adc(struct device *dev, s32 *val)
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+static int ms5611_spi_read_adc(struct ms5611_state *st, s32 *val)
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 {
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 	int ret;
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 	u8 buf[3] = { MS5611_READ_ADC };
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-	struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev));
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 	ret = spi_write_then_read(st->client, buf, 1, buf, 3);
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 	if (ret < 0)
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 		return ret;
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-	*val = (buf[0] << 16) | (buf[1] << 8) | buf[2];
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+	*val = get_unaligned_be24(&buf[0]);
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 	return 0;
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 }
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52
 
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-static int ms5611_spi_read_adc_temp_and_pressure(struct device *dev,
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+static int ms5611_spi_read_adc_temp_and_pressure(struct ms5611_state *st,
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 						 s32 *temp, s32 *pressure)
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 {
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 	int ret;
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-	struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev));
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 	const struct ms5611_osr *osr = st->temp_osr;
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 	/*
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@@ -69,7 +65,7 @@
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 		return ret;
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 	usleep_range(osr->conv_usec, osr->conv_usec + (osr->conv_usec / 10UL));
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-	ret = ms5611_spi_read_adc(dev, temp);
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+	ret = ms5611_spi_read_adc(st, temp);
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 	if (ret < 0)
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 		return ret;
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@@ -79,7 +75,7 @@
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 		return ret;
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 	usleep_range(osr->conv_usec, osr->conv_usec + (osr->conv_usec / 10UL));
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-	return ms5611_spi_read_adc(dev, pressure);
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+	return ms5611_spi_read_adc(st, pressure);
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 }
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 static int ms5611_spi_probe(struct spi_device *spi)
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@@ -95,7 +91,7 @@
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 	spi_set_drvdata(spi, indio_dev);
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 	spi->mode = SPI_MODE_0;
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-	spi->max_speed_hz = 20000000;
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+	spi->max_speed_hz = min(spi->max_speed_hz, 20000000U);
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 	spi->bits_per_word = 8;
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 	ret = spi_setup(spi);
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 	if (ret < 0)
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@@ -116,16 +112,12 @@
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 	return ms5611_remove(spi_get_drvdata(spi));
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 }
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-#if defined(CONFIG_OF)
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 static const struct of_device_id ms5611_spi_matches[] = {
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 	{ .compatible = "meas,ms5611" },
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-	{ .compatible = "ms5611" },
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 	{ .compatible = "meas,ms5607" },
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-	{ .compatible = "ms5607" },
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 	{ }
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 };
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 MODULE_DEVICE_TABLE(of, ms5611_spi_matches);
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-#endif
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 static const struct spi_device_id ms5611_id[] = {
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 	{ "ms5611", MS5611 },
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@@ -137,7 +129,7 @@
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 static struct spi_driver ms5611_driver = {
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 	.driver = {
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 		.name = "ms5611",
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-		.of_match_table = of_match_ptr(ms5611_spi_matches)
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+		.of_match_table = ms5611_spi_matches
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 	},
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 	.id_table = ms5611_id,
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 	.probe = ms5611_spi_probe,