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Message-Id: <1201178511-12133-9-git-send-email-hskinnemoen@atmel.com>
Date: Thu, 24 Jan 2008 13:41:50 +0100
From: Haavard Skinnemoen <hskinnemoen@...el.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Andrew Victor <linux@...im.org.za>, Remy Bohmer <linux@...mer.net>,
Chip Coldwell <coldwell@...hat.com>,
Marc Pignat <marc.pignat@...s.ch>,
David Brownell <david-b@...bell.net>,
linux-kernel@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>,
Haavard Skinnemoen <hskinnemoen@...el.com>
Subject: [PATCH -mm v4 8/9] 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 <hskinnemoen@...el.com>
---
drivers/serial/atmel_serial.c | 40 +++++++++++++++++++++++-----------------
1 files changed, 23 insertions(+), 17 deletions(-)
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index e4f9449..2ff92b9 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -157,17 +157,23 @@ 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;
}
@@ -330,7 +336,7 @@ 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;
@@ -374,7 +380,7 @@ 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);
@@ -454,7 +460,7 @@ 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)) {
/*
@@ -495,7 +501,7 @@ 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 */
@@ -519,7 +525,7 @@ 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)) {
@@ -555,7 +561,7 @@ 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;
@@ -601,7 +607,7 @@ 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;
@@ -669,7 +675,7 @@ 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;
@@ -743,7 +749,7 @@ 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;
@@ -788,7 +794,7 @@ 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;
/*
@@ -898,7 +904,7 @@ 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.
*/
@@ -955,7 +961,7 @@ 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:
@@ -1427,7 +1433,7 @@ 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())
@@ -1443,7 +1449,7 @@ 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);
@@ -1502,7 +1508,7 @@ 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);
--
1.5.3.8
--
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