From c811ab8c2daf6bc2b5761937929a62fa84b18b32 Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Fri, 8 Feb 2008 04:21:08 -0800 Subject: atmel_serial: use container_of instead of direct cast As pointed out by David Brownell, we really ought to be using container_of when converting from "struct uart_port *" to "struct atmel_uart_port *". Signed-off-by: Haavard Skinnemoen Cc: Andrew Victor Tested-by: Marc Pignat Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/serial/atmel_serial.c | 40 +++++++++++++++++++++++----------------- 1 file changed, 23 insertions(+), 17 deletions(-) (limited to 'drivers/serial/atmel_serial.c') diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c index e08fe64e4466..8cea6068f03e 100644 --- a/drivers/serial/atmel_serial.c +++ b/drivers/serial/atmel_serial.c @@ -153,17 +153,23 @@ static struct atmel_uart_port atmel_ports[ATMEL_MAX_UART]; static struct console atmel_console; #endif +static inline struct atmel_uart_port * +to_atmel_uart_port(struct uart_port *uart) +{ + return container_of(uart, struct atmel_uart_port, uart); +} + #ifdef CONFIG_SERIAL_ATMEL_PDC static bool atmel_use_dma_rx(struct uart_port *port) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); return atmel_port->use_dma_rx; } static bool atmel_use_dma_tx(struct uart_port *port) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); return atmel_port->use_dma_tx; } @@ -326,7 +332,7 @@ static void atmel_buffer_rx_char(struct uart_port *port, unsigned int status, unsigned int ch) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); struct circ_buf *ring = &atmel_port->rx_ring; struct atmel_uart_char *c; @@ -370,7 +376,7 @@ static void atmel_pdc_rxerr(struct uart_port *port, unsigned int status) */ static void atmel_rx_chars(struct uart_port *port) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); unsigned int status, ch; status = UART_GET_CSR(port); @@ -450,7 +456,7 @@ static void atmel_tx_chars(struct uart_port *port) static void atmel_handle_receive(struct uart_port *port, unsigned int pending) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); if (atmel_use_dma_rx(port)) { /* @@ -491,7 +497,7 @@ atmel_handle_receive(struct uart_port *port, unsigned int pending) static void atmel_handle_transmit(struct uart_port *port, unsigned int pending) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); if (atmel_use_dma_tx(port)) { /* PDC transmit */ @@ -515,7 +521,7 @@ static void atmel_handle_status(struct uart_port *port, unsigned int pending, unsigned int status) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); if (pending & (ATMEL_US_RIIC | ATMEL_US_DSRIC | ATMEL_US_DCDIC | ATMEL_US_CTSIC)) { @@ -551,7 +557,7 @@ static irqreturn_t atmel_interrupt(int irq, void *dev_id) */ static void atmel_tx_dma(struct uart_port *port) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); struct circ_buf *xmit = &port->info->xmit; struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx; int count; @@ -593,7 +599,7 @@ static void atmel_tx_dma(struct uart_port *port) static void atmel_rx_from_ring(struct uart_port *port) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); struct circ_buf *ring = &atmel_port->rx_ring; unsigned int flg; unsigned int status; @@ -661,7 +667,7 @@ static void atmel_rx_from_ring(struct uart_port *port) static void atmel_rx_from_dma(struct uart_port *port) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); struct tty_struct *tty = port->info->tty; struct atmel_dma_buffer *pdc; int rx_idx = atmel_port->pdc_rx_idx; @@ -741,7 +747,7 @@ static void atmel_rx_from_dma(struct uart_port *port) static void atmel_tasklet_func(unsigned long data) { struct uart_port *port = (struct uart_port *)data; - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); unsigned int status; unsigned int status_change; @@ -786,7 +792,7 @@ static void atmel_tasklet_func(unsigned long data) */ static int atmel_startup(struct uart_port *port) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); int retval; /* @@ -896,7 +902,7 @@ static int atmel_startup(struct uart_port *port) */ static void atmel_shutdown(struct uart_port *port) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); /* * Ensure everything is stopped. */ @@ -953,7 +959,7 @@ static void atmel_shutdown(struct uart_port *port) static void atmel_serial_pm(struct uart_port *port, unsigned int state, unsigned int oldstate) { - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); switch (state) { case 0: @@ -1425,7 +1431,7 @@ static int atmel_serial_suspend(struct platform_device *pdev, pm_message_t state) { struct uart_port *port = platform_get_drvdata(pdev); - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); if (device_may_wakeup(&pdev->dev) && !at91_suspend_entering_slow_clock()) @@ -1441,7 +1447,7 @@ static int atmel_serial_suspend(struct platform_device *pdev, static int atmel_serial_resume(struct platform_device *pdev) { struct uart_port *port = platform_get_drvdata(pdev); - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); if (atmel_port->suspended) { uart_resume_port(&atmel_uart, port); @@ -1501,7 +1507,7 @@ err_alloc_ring: static int __devexit atmel_serial_remove(struct platform_device *pdev) { struct uart_port *port = platform_get_drvdata(pdev); - struct atmel_uart_port *atmel_port = (struct atmel_uart_port *)port; + struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); int ret = 0; device_init_wakeup(&pdev->dev, 0); -- cgit v1.2.2