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dz.c: Use a helper to cast from "struct uart_port *" 

Replace all casts from "struct uart_port *" to "struct dz_port *" with a
construct based on container_of().  This makes the conversion work
irrespective of where the former struct is located within the latter.

By popular request I have implemented it as an inline function rather than
a macro this time.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Maciej W. Rozycki 2008-02-07 00:15:15 -08:00 committed by Linus Torvalds
parent ff11d07803
commit f5519caad5
1 changed files with 16 additions and 11 deletions
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27
drivers/serial/dz.c
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@ -68,6 +68,11 @@ struct dz_port {
static struct dz_port dz_ports[DZ_NB_PORT];
static inline struct dz_port *to_dport(struct uart_port *uport)
{
return container_of(uport, struct dz_port, port);
}
/*
* ------------------------------------------------------------
* dz_in () and dz_out ()
@ -106,7 +111,7 @@ static inline void dz_out(struct dz_port *dport, unsigned offset,
static void dz_stop_tx(struct uart_port *uport)
{
struct dz_port *dport = (struct dz_port *)uport;
struct dz_port *dport = to_dport(uport);
unsigned short tmp, mask = 1 << dport->port.line;
tmp = dz_in(dport, DZ_TCR); /* read the TX flag */
@ -116,7 +121,7 @@ static void dz_stop_tx(struct uart_port *uport)
static void dz_start_tx(struct uart_port *uport)
{
struct dz_port *dport = (struct dz_port *)uport;
struct dz_port *dport = to_dport(uport);
unsigned short tmp, mask = 1 << dport->port.line;
tmp = dz_in(dport, DZ_TCR); /* read the TX flag */
@ -126,7 +131,7 @@ static void dz_start_tx(struct uart_port *uport)
static void dz_stop_rx(struct uart_port *uport)
{
struct dz_port *dport = (struct dz_port *)uport;
struct dz_port *dport = to_dport(uport);
dport->cflag &= ~DZ_RXENAB;
dz_out(dport, DZ_LPR, dport->cflag);
@ -349,7 +354,7 @@ static unsigned int dz_get_mctrl(struct uart_port *uport)
/*
* FIXME: Handle the 3100/5000 as appropriate. --macro
*/
struct dz_port *dport = (struct dz_port *)uport;
struct dz_port *dport = to_dport(uport);
unsigned int mctrl = TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
if (dport->port.line == DZ_MODEM) {
@ -365,7 +370,7 @@ static void dz_set_mctrl(struct uart_port *uport, unsigned int mctrl)
/*
* FIXME: Handle the 3100/5000 as appropriate. --macro
*/
struct dz_port *dport = (struct dz_port *)uport;
struct dz_port *dport = to_dport(uport);
unsigned short tmp;
if (dport->port.line == DZ_MODEM) {
@ -387,7 +392,7 @@ static void dz_set_mctrl(struct uart_port *uport, unsigned int mctrl)
*/
static int dz_startup(struct uart_port *uport)
{
struct dz_port *dport = (struct dz_port *)uport;
struct dz_port *dport = to_dport(uport);
unsigned long flags;
unsigned short tmp;
@ -413,7 +418,7 @@ static int dz_startup(struct uart_port *uport)
*/
static void dz_shutdown(struct uart_port *uport)
{
struct dz_port *dport = (struct dz_port *)uport;
struct dz_port *dport = to_dport(uport);
unsigned long flags;
spin_lock_irqsave(&dport->port.lock, flags);
@ -435,7 +440,7 @@ static void dz_shutdown(struct uart_port *uport)
*/
static unsigned int dz_tx_empty(struct uart_port *uport)
{
struct dz_port *dport = (struct dz_port *)uport;
struct dz_port *dport = to_dport(uport);
unsigned short tmp, mask = 1 << dport->port.line;
tmp = dz_in(dport, DZ_TCR);
@ -450,7 +455,7 @@ static void dz_break_ctl(struct uart_port *uport, int break_state)
* FIXME: Can't access BREAK bits in TDR easily;
* reuse the code for polled TX. --macro
*/
struct dz_port *dport = (struct dz_port *)uport;
struct dz_port *dport = to_dport(uport);
unsigned long flags;
unsigned short tmp, mask = 1 << dport->port.line;
@ -505,7 +510,7 @@ static int dz_encode_baud_rate(unsigned int baud)
static void dz_set_termios(struct uart_port *uport, struct ktermios *termios,
struct ktermios *old_termios)
{
struct dz_port *dport = (struct dz_port *)uport;
struct dz_port *dport = to_dport(uport);
unsigned long flags;
unsigned int cflag, baud;
int bflag;
@ -685,7 +690,7 @@ static void dz_reset(struct dz_port *dport)
*/
static void dz_console_putchar(struct uart_port *uport, int ch)
{
struct dz_port *dport = (struct dz_port *)uport;
struct dz_port *dport = to_dport(uport);
unsigned long flags;
unsigned short csr, tcr, trdy, mask;
int loops = 10000;