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[188.155.181.108]) by smtp.gmail.com with ESMTPSA id rv11-20020a17090710cb00b006d5c0cd5e0dsm1481465ejb.82.2022.03.04.00.04.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Mar 2022 00:04:00 -0800 (PST) From: Krzysztof Kozlowski To: Krzysztof Kozlowski , Alim Akhtar , Greg Kroah-Hartman , Jiri Slaby , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/7] tty: serial: samsung: constify s3c24xx_serial_drv_data Date: Fri, 4 Mar 2022 09:03:44 +0100 Message-Id: <20220304080348.218581-3-krzysztof.kozlowski@canonical.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220304080348.218581-1-krzysztof.kozlowski@canonical.com> References: <20220304080348.218581-1-krzysztof.kozlowski@canonical.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The driver data (struct s3c24xx_serial_drv_data) is only used to initialize the driver properly and is not modified. Make it const. Signed-off-by: Krzysztof Kozlowski --- drivers/tty/serial/samsung_tty.c | 139 +++++++++++++++---------------- 1 file changed, 69 insertions(+), 70 deletions(-) diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c index a9a75b5b9705..0b4f40044e87 100644 --- a/drivers/tty/serial/samsung_tty.c +++ b/drivers/tty/serial/samsung_tty.c @@ -136,14 +136,14 @@ struct s3c24xx_uart_port { unsigned int tx_mode; unsigned int rx_mode; - struct s3c24xx_uart_info *info; + const struct s3c24xx_uart_info *info; struct clk *clk; struct clk *baudclk; struct uart_port port; - struct s3c24xx_serial_drv_data *drv_data; + const struct s3c24xx_serial_drv_data *drv_data; /* reference to platform data */ - struct s3c2410_uartcfg *cfg; + const struct s3c2410_uartcfg *cfg; struct s3c24xx_uart_dma *dma; @@ -221,7 +221,7 @@ static inline void s3c24xx_clear_bit(struct uart_port *port, int idx, local_irq_restore(flags); } -static inline struct s3c24xx_uart_port *to_ourport(struct uart_port *port) +static inline struct s3c24xx_uart_port *to_ourport(const struct uart_port *port) { return container_of(port, struct s3c24xx_uart_port, port); } @@ -573,13 +573,13 @@ static void s3c24xx_serial_stop_rx(struct uart_port *port) } } -static inline struct s3c24xx_uart_info +static inline const struct s3c24xx_uart_info *s3c24xx_port_to_info(struct uart_port *port) { return to_ourport(port)->info; } -static inline struct s3c2410_uartcfg +static inline const struct s3c2410_uartcfg *s3c24xx_port_to_cfg(struct uart_port *port) { struct s3c24xx_uart_port *ourport; @@ -594,7 +594,7 @@ static inline struct s3c2410_uartcfg static int s3c24xx_serial_rx_fifocnt(struct s3c24xx_uart_port *ourport, unsigned long ufstat) { - struct s3c24xx_uart_info *info = ourport->info; + const struct s3c24xx_uart_info *info = ourport->info; if (ufstat & info->rx_fifofull) return ourport->port.fifosize; @@ -986,7 +986,7 @@ static irqreturn_t apple_serial_handle_irq(int irq, void *id) static unsigned int s3c24xx_serial_tx_empty(struct uart_port *port) { - struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); + const struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); unsigned long ufstat = rd_regl(port, S3C2410_UFSTAT); unsigned long ufcon = rd_regl(port, S3C2410_UFCON); @@ -1405,7 +1405,7 @@ static void s3c24xx_serial_pm(struct uart_port *port, unsigned int level, static inline int s3c24xx_serial_getsource(struct uart_port *port) { - struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); + const struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); unsigned int ucon; if (info->num_clks == 1) @@ -1419,7 +1419,7 @@ static inline int s3c24xx_serial_getsource(struct uart_port *port) static void s3c24xx_serial_setsource(struct uart_port *port, unsigned int clk_sel) { - struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); + const struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); unsigned int ucon; if (info->num_clks == 1) @@ -1438,7 +1438,7 @@ static unsigned int s3c24xx_serial_getclk(struct s3c24xx_uart_port *ourport, unsigned int req_baud, struct clk **best_clk, unsigned int *clk_num) { - struct s3c24xx_uart_info *info = ourport->info; + const struct s3c24xx_uart_info *info = ourport->info; struct clk *clk; unsigned long rate; unsigned int cnt, baud, quot, best_quot = 0; @@ -1522,7 +1522,7 @@ static void s3c24xx_serial_set_termios(struct uart_port *port, struct ktermios *termios, struct ktermios *old) { - struct s3c2410_uartcfg *cfg = s3c24xx_port_to_cfg(port); + const struct s3c2410_uartcfg *cfg = s3c24xx_port_to_cfg(port); struct s3c24xx_uart_port *ourport = to_ourport(port); struct clk *clk = ERR_PTR(-EINVAL); unsigned long flags; @@ -1691,7 +1691,7 @@ static const char *s3c24xx_serial_type(struct uart_port *port) static void s3c24xx_serial_config_port(struct uart_port *port, int flags) { - struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); + const struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); if (flags & UART_CONFIG_TYPE) port->type = info->port_type; @@ -1703,7 +1703,7 @@ static void s3c24xx_serial_config_port(struct uart_port *port, int flags) static int s3c24xx_serial_verify_port(struct uart_port *port, struct serial_struct *ser) { - struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); + const struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); if (ser->type != PORT_UNKNOWN && ser->type != info->port_type) return -EINVAL; @@ -1873,9 +1873,9 @@ s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS] = { */ static void s3c24xx_serial_resetport(struct uart_port *port, - struct s3c2410_uartcfg *cfg) + const struct s3c2410_uartcfg *cfg) { - struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); + const struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); unsigned long ucon = rd_regl(port, S3C2410_UCON); ucon &= (info->clksel_mask | info->ucon_mask); @@ -1979,7 +1979,7 @@ s3c24xx_serial_cpufreq_deregister(struct s3c24xx_uart_port *port) static int s3c24xx_serial_enable_baudclk(struct s3c24xx_uart_port *ourport) { struct device *dev = ourport->port.dev; - struct s3c24xx_uart_info *info = ourport->info; + const struct s3c24xx_uart_info *info = ourport->info; char clk_name[MAX_CLK_NAME_LENGTH]; unsigned int clk_sel; struct clk *clk; @@ -2021,7 +2021,7 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport, struct platform_device *platdev) { struct uart_port *port = &ourport->port; - struct s3c2410_uartcfg *cfg = ourport->cfg; + const struct s3c2410_uartcfg *cfg = ourport->cfg; struct resource *res; int ret; @@ -2156,7 +2156,7 @@ static const struct of_device_id s3c24xx_uart_dt_match[]; static int probe_index; -static inline struct s3c24xx_serial_drv_data * +static inline const struct s3c24xx_serial_drv_data * s3c24xx_get_driver_data(struct platform_device *pdev) { #ifdef CONFIG_OF @@ -2419,7 +2419,7 @@ static struct uart_port *cons_uart; static int s3c24xx_serial_console_txrdy(struct uart_port *port, unsigned int ufcon) { - struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); + const struct s3c24xx_uart_info *info = s3c24xx_port_to_info(port); unsigned long ufstat, utrstat; if (ufcon & S3C2410_UFCON_FIFOMODE) { @@ -2615,7 +2615,7 @@ static struct console s3c24xx_serial_console = { #endif /* CONFIG_SERIAL_SAMSUNG_CONSOLE */ #ifdef CONFIG_CPU_S3C2410 -static struct s3c24xx_serial_drv_data s3c2410_serial_drv_data = { +static const struct s3c24xx_serial_drv_data s3c2410_serial_drv_data = { .info = { .name = "Samsung S3C2410 UART", .type = TYPE_S3C24XX, @@ -2637,13 +2637,13 @@ static struct s3c24xx_serial_drv_data s3c2410_serial_drv_data = { .ufcon = S3C2410_UFCON_DEFAULT, }, }; -#define S3C2410_SERIAL_DRV_DATA ((kernel_ulong_t)&s3c2410_serial_drv_data) +#define S3C2410_SERIAL_DRV_DATA (&s3c2410_serial_drv_data) #else -#define S3C2410_SERIAL_DRV_DATA (kernel_ulong_t)NULL +#define S3C2410_SERIAL_DRV_DATA (NULL) #endif #ifdef CONFIG_CPU_S3C2412 -static struct s3c24xx_serial_drv_data s3c2412_serial_drv_data = { +static const struct s3c24xx_serial_drv_data s3c2412_serial_drv_data = { .info = { .name = "Samsung S3C2412 UART", .type = TYPE_S3C24XX, @@ -2666,14 +2666,14 @@ static struct s3c24xx_serial_drv_data s3c2412_serial_drv_data = { .ufcon = S3C2410_UFCON_DEFAULT, }, }; -#define S3C2412_SERIAL_DRV_DATA ((kernel_ulong_t)&s3c2412_serial_drv_data) +#define S3C2412_SERIAL_DRV_DATA (&s3c2412_serial_drv_data) #else -#define S3C2412_SERIAL_DRV_DATA (kernel_ulong_t)NULL +#define S3C2412_SERIAL_DRV_DATA (NULL) #endif #if defined(CONFIG_CPU_S3C2440) || defined(CONFIG_CPU_S3C2416) || \ defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2442) -static struct s3c24xx_serial_drv_data s3c2440_serial_drv_data = { +static const struct s3c24xx_serial_drv_data s3c2440_serial_drv_data = { .info = { .name = "Samsung S3C2440 UART", .type = TYPE_S3C24XX, @@ -2697,13 +2697,13 @@ static struct s3c24xx_serial_drv_data s3c2440_serial_drv_data = { .ufcon = S3C2410_UFCON_DEFAULT, }, }; -#define S3C2440_SERIAL_DRV_DATA ((kernel_ulong_t)&s3c2440_serial_drv_data) +#define S3C2440_SERIAL_DRV_DATA (&s3c2440_serial_drv_data) #else -#define S3C2440_SERIAL_DRV_DATA (kernel_ulong_t)NULL +#define S3C2440_SERIAL_DRV_DATA (NULL) #endif #if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410) -static struct s3c24xx_serial_drv_data s3c6400_serial_drv_data = { +static const struct s3c24xx_serial_drv_data s3c6400_serial_drv_data = { .info = { .name = "Samsung S3C6400 UART", .type = TYPE_S3C6400, @@ -2726,13 +2726,13 @@ static struct s3c24xx_serial_drv_data s3c6400_serial_drv_data = { .ufcon = S3C2410_UFCON_DEFAULT, }, }; -#define S3C6400_SERIAL_DRV_DATA ((kernel_ulong_t)&s3c6400_serial_drv_data) +#define S3C6400_SERIAL_DRV_DATA (&s3c6400_serial_drv_data) #else -#define S3C6400_SERIAL_DRV_DATA (kernel_ulong_t)NULL +#define S3C6400_SERIAL_DRV_DATA (NULL) #endif #ifdef CONFIG_CPU_S5PV210 -static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = { +static const struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = { .info = { .name = "Samsung S5PV210 UART", .type = TYPE_S3C6400, @@ -2755,9 +2755,9 @@ static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = { }, .fifosize = { 256, 64, 16, 16 }, }; -#define S5PV210_SERIAL_DRV_DATA ((kernel_ulong_t)&s5pv210_serial_drv_data) +#define S5PV210_SERIAL_DRV_DATA (&s5pv210_serial_drv_data) #else -#define S5PV210_SERIAL_DRV_DATA (kernel_ulong_t)NULL +#define S5PV210_SERIAL_DRV_DATA (NULL) #endif #if defined(CONFIG_ARCH_EXYNOS) @@ -2784,33 +2784,33 @@ static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = { .has_fracval = 1, \ } \ -static struct s3c24xx_serial_drv_data exynos4210_serial_drv_data = { +static const struct s3c24xx_serial_drv_data exynos4210_serial_drv_data = { EXYNOS_COMMON_SERIAL_DRV_DATA(), .fifosize = { 256, 64, 16, 16 }, }; -static struct s3c24xx_serial_drv_data exynos5433_serial_drv_data = { +static const struct s3c24xx_serial_drv_data exynos5433_serial_drv_data = { EXYNOS_COMMON_SERIAL_DRV_DATA(), .fifosize = { 64, 256, 16, 256 }, }; -static struct s3c24xx_serial_drv_data exynos850_serial_drv_data = { +static const struct s3c24xx_serial_drv_data exynos850_serial_drv_data = { EXYNOS_COMMON_SERIAL_DRV_DATA(), .fifosize = { 256, 64, 64, 64 }, }; -#define EXYNOS4210_SERIAL_DRV_DATA ((kernel_ulong_t)&exynos4210_serial_drv_data) -#define EXYNOS5433_SERIAL_DRV_DATA ((kernel_ulong_t)&exynos5433_serial_drv_data) -#define EXYNOS850_SERIAL_DRV_DATA ((kernel_ulong_t)&exynos850_serial_drv_data) +#define EXYNOS4210_SERIAL_DRV_DATA (&exynos4210_serial_drv_data) +#define EXYNOS5433_SERIAL_DRV_DATA (&exynos5433_serial_drv_data) +#define EXYNOS850_SERIAL_DRV_DATA (&exynos850_serial_drv_data) #else -#define EXYNOS4210_SERIAL_DRV_DATA ((kernel_ulong_t)NULL) -#define EXYNOS5433_SERIAL_DRV_DATA ((kernel_ulong_t)NULL) -#define EXYNOS850_SERIAL_DRV_DATA ((kernel_ulong_t)NULL) +#define EXYNOS4210_SERIAL_DRV_DATA (NULL) +#define EXYNOS5433_SERIAL_DRV_DATA (NULL) +#define EXYNOS850_SERIAL_DRV_DATA (NULL) #endif #ifdef CONFIG_ARCH_APPLE -static struct s3c24xx_serial_drv_data s5l_serial_drv_data = { +static const struct s3c24xx_serial_drv_data s5l_serial_drv_data = { .info = { .name = "Apple S5L UART", .type = TYPE_APPLE_S5L, @@ -2832,39 +2832,39 @@ static struct s3c24xx_serial_drv_data s5l_serial_drv_data = { .ufcon = S3C2410_UFCON_DEFAULT, }, }; -#define S5L_SERIAL_DRV_DATA ((kernel_ulong_t)&s5l_serial_drv_data) +#define S5L_SERIAL_DRV_DATA (&s5l_serial_drv_data) #else -#define S5L_SERIAL_DRV_DATA ((kernel_ulong_t)NULL) +#define S5L_SERIAL_DRV_DATA (NULL) #endif static const struct platform_device_id s3c24xx_serial_driver_ids[] = { { .name = "s3c2410-uart", - .driver_data = S3C2410_SERIAL_DRV_DATA, + .driver_data = (kernel_ulong_t)S3C2410_SERIAL_DRV_DATA, }, { .name = "s3c2412-uart", - .driver_data = S3C2412_SERIAL_DRV_DATA, + .driver_data = (kernel_ulong_t)S3C2412_SERIAL_DRV_DATA, }, { .name = "s3c2440-uart", - .driver_data = S3C2440_SERIAL_DRV_DATA, + .driver_data = (kernel_ulong_t)S3C2440_SERIAL_DRV_DATA, }, { .name = "s3c6400-uart", - .driver_data = S3C6400_SERIAL_DRV_DATA, + .driver_data = (kernel_ulong_t)S3C6400_SERIAL_DRV_DATA, }, { .name = "s5pv210-uart", - .driver_data = S5PV210_SERIAL_DRV_DATA, + .driver_data = (kernel_ulong_t)S5PV210_SERIAL_DRV_DATA, }, { .name = "exynos4210-uart", - .driver_data = EXYNOS4210_SERIAL_DRV_DATA, + .driver_data = (kernel_ulong_t)EXYNOS4210_SERIAL_DRV_DATA, }, { .name = "exynos5433-uart", - .driver_data = EXYNOS5433_SERIAL_DRV_DATA, + .driver_data = (kernel_ulong_t)EXYNOS5433_SERIAL_DRV_DATA, }, { .name = "s5l-uart", - .driver_data = S5L_SERIAL_DRV_DATA, + .driver_data = (kernel_ulong_t)S5L_SERIAL_DRV_DATA, }, { .name = "exynos850-uart", - .driver_data = EXYNOS850_SERIAL_DRV_DATA, + .driver_data = (kernel_ulong_t)EXYNOS850_SERIAL_DRV_DATA, }, { }, }; @@ -2873,23 +2873,23 @@ MODULE_DEVICE_TABLE(platform, s3c24xx_serial_driver_ids); #ifdef CONFIG_OF static const struct of_device_id s3c24xx_uart_dt_match[] = { { .compatible = "samsung,s3c2410-uart", - .data = (void *)S3C2410_SERIAL_DRV_DATA }, + .data = S3C2410_SERIAL_DRV_DATA }, { .compatible = "samsung,s3c2412-uart", - .data = (void *)S3C2412_SERIAL_DRV_DATA }, + .data = S3C2412_SERIAL_DRV_DATA }, { .compatible = "samsung,s3c2440-uart", - .data = (void *)S3C2440_SERIAL_DRV_DATA }, + .data = S3C2440_SERIAL_DRV_DATA }, { .compatible = "samsung,s3c6400-uart", - .data = (void *)S3C6400_SERIAL_DRV_DATA }, + .data = S3C6400_SERIAL_DRV_DATA }, { .compatible = "samsung,s5pv210-uart", - .data = (void *)S5PV210_SERIAL_DRV_DATA }, + .data = S5PV210_SERIAL_DRV_DATA }, { .compatible = "samsung,exynos4210-uart", - .data = (void *)EXYNOS4210_SERIAL_DRV_DATA }, + .data = EXYNOS4210_SERIAL_DRV_DATA }, { .compatible = "samsung,exynos5433-uart", - .data = (void *)EXYNOS5433_SERIAL_DRV_DATA }, + .data = EXYNOS5433_SERIAL_DRV_DATA }, { .compatible = "apple,s5l-uart", - .data = (void *)S5L_SERIAL_DRV_DATA }, + .data = S5L_SERIAL_DRV_DATA }, { .compatible = "samsung,exynos850-uart", - .data = (void *)EXYNOS850_SERIAL_DRV_DATA }, + .data = EXYNOS850_SERIAL_DRV_DATA }, {}, }; MODULE_DEVICE_TABLE(of, s3c24xx_uart_dt_match); @@ -2935,7 +2935,7 @@ module_exit(samsung_serial_exit); * Early console. */ -static void wr_reg_barrier(struct uart_port *port, u32 reg, u32 val) +static void wr_reg_barrier(const struct uart_port *port, u32 reg, u32 val) { switch (port->iotype) { case UPIO_MEM: @@ -2951,15 +2951,15 @@ struct samsung_early_console_data { u32 txfull_mask; }; -static void samsung_early_busyuart(struct uart_port *port) +static void samsung_early_busyuart(const struct uart_port *port) { while (!(readl(port->membase + S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXFE)) ; } -static void samsung_early_busyuart_fifo(struct uart_port *port) +static void samsung_early_busyuart_fifo(const struct uart_port *port) { - struct samsung_early_console_data *data = port->private_data; + const struct samsung_early_console_data *data = port->private_data; while (readl(port->membase + S3C2410_UFSTAT) & data->txfull_mask) ; @@ -3062,7 +3062,6 @@ static int __init apple_s5l_early_console_setup(struct earlycon_device *device, OF_EARLYCON_DECLARE(s5l, "apple,s5l-uart", apple_s5l_early_console_setup); #endif -MODULE_ALIAS("platform:samsung-uart"); MODULE_DESCRIPTION("Samsung SoC Serial port driver"); MODULE_AUTHOR("Ben Dooks "); MODULE_LICENSE("GPL v2"); -- 2.32.0