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spi: s3c64xx: constify driver/match data 

The match data (struct s3c64xx_spi_port_config) stored in of_device_id
and platform_device_id tables is not modified by the driver and can be
handled entirely in a const-way to increase the code safety.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Sylwester Nawrocki <snawrocki@kernel.org>
Link: https://lore.kernel.org/r/20210414203343.203119-3-krzysztof.kozlowski@canonical.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2021-04-14 22:33:43 +02:00 committed by Mark Brown
parent 7d712f799a
commit d637141551
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GPG Key ID: 24D68B725D5487D0
1 changed files with 10 additions and 11 deletions
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21
drivers/spi/spi-s3c64xx.c
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@ -190,7 +190,7 @@ struct s3c64xx_spi_driver_data {
unsigned cur_speed;
struct s3c64xx_spi_dma_data rx_dma;
struct s3c64xx_spi_dma_data tx_dma;
struct s3c64xx_spi_port_config *port_conf;
const struct s3c64xx_spi_port_config *port_conf;
unsigned int port_id;
};
@ -1049,15 +1049,14 @@ static struct s3c64xx_spi_info *s3c64xx_spi_parse_dt(struct device *dev)
}
#endif
static inline struct s3c64xx_spi_port_config *s3c64xx_spi_get_port_config(
static inline const struct s3c64xx_spi_port_config *s3c64xx_spi_get_port_config(
struct platform_device *pdev)
{
#ifdef CONFIG_OF
if (pdev->dev.of_node)
return (struct s3c64xx_spi_port_config *)of_device_get_match_data(&pdev->dev);
return of_device_get_match_data(&pdev->dev);
#endif
return (struct s3c64xx_spi_port_config *)
platform_get_device_id(pdev)->driver_data;
return (const struct s3c64xx_spi_port_config *)platform_get_device_id(pdev)->driver_data;
}
static int s3c64xx_spi_probe(struct platform_device *pdev)
@ -1395,27 +1394,27 @@ static const struct dev_pm_ops s3c64xx_spi_pm = {
s3c64xx_spi_runtime_resume, NULL)
};
static struct s3c64xx_spi_port_config s3c2443_spi_port_config = {
static const struct s3c64xx_spi_port_config s3c2443_spi_port_config = {
.fifo_lvl_mask = { 0x7f },
.rx_lvl_offset = 13,
.tx_st_done = 21,
.high_speed = true,
};
static struct s3c64xx_spi_port_config s3c6410_spi_port_config = {
static const struct s3c64xx_spi_port_config s3c6410_spi_port_config = {
.fifo_lvl_mask = { 0x7f, 0x7F },
.rx_lvl_offset = 13,
.tx_st_done = 21,
};
static struct s3c64xx_spi_port_config s5pv210_spi_port_config = {
static const struct s3c64xx_spi_port_config s5pv210_spi_port_config = {
.fifo_lvl_mask = { 0x1ff, 0x7F },
.rx_lvl_offset = 15,
.tx_st_done = 25,
.high_speed = true,
};
static struct s3c64xx_spi_port_config exynos4_spi_port_config = {
static const struct s3c64xx_spi_port_config exynos4_spi_port_config = {
.fifo_lvl_mask = { 0x1ff, 0x7F, 0x7F },
.rx_lvl_offset = 15,
.tx_st_done = 25,
@ -1424,7 +1423,7 @@ static struct s3c64xx_spi_port_config exynos4_spi_port_config = {
.quirks = S3C64XX_SPI_QUIRK_CS_AUTO,
};
static struct s3c64xx_spi_port_config exynos7_spi_port_config = {
static const struct s3c64xx_spi_port_config exynos7_spi_port_config = {
.fifo_lvl_mask = { 0x1ff, 0x7F, 0x7F, 0x7F, 0x7F, 0x1ff},
.rx_lvl_offset = 15,
.tx_st_done = 25,
@ -1433,7 +1432,7 @@ static struct s3c64xx_spi_port_config exynos7_spi_port_config = {
.quirks = S3C64XX_SPI_QUIRK_CS_AUTO,
};
static struct s3c64xx_spi_port_config exynos5433_spi_port_config = {
static const struct s3c64xx_spi_port_config exynos5433_spi_port_config = {
.fifo_lvl_mask = { 0x1ff, 0x7f, 0x7f, 0x7f, 0x7f, 0x1ff},
.rx_lvl_offset = 15,
.tx_st_done = 25,