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sb1250-duart: __maybe_unused, etc. fixes 

This is a set of small fixes addressing points raised with the original
driver submission.  In particular, __maybe_unused is used rather than a
local hack and sbd_ops is made const.  Additionally I have made two local
string variables automatic as rodata space was wasted for pointers
unnecessarily.

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>
hifive-unleashed-5.1
Maciej W. Rozycki 2007-07-31 00:39:22 -07:00 committed by Linus Torvalds
parent dd22a68228
commit 86d0004abc
1 changed files with 6 additions and 8 deletions
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14
drivers/serial/sb1250-duart.c
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@ -25,6 +25,7 @@
#define SUPPORT_SYSRQ
#endif
#include <linux/compiler.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/errno.h>
@ -103,8 +104,6 @@ struct sbd_duart {
static struct sbd_duart sbd_duarts[DUART_MAX_CHIP];
#define __unused __attribute__((__unused__))
/*
* Reading and writing SB1250 DUART registers.
@ -204,12 +203,12 @@ static int sbd_receive_drain(struct sbd_port *sport)
return loops;
}
static int __unused sbd_transmit_ready(struct sbd_port *sport)
static int __maybe_unused sbd_transmit_ready(struct sbd_port *sport)
{
return read_sbdchn(sport, R_DUART_STATUS) & M_DUART_TX_RDY;
}
static int __unused sbd_transmit_drain(struct sbd_port *sport)
static int __maybe_unused sbd_transmit_drain(struct sbd_port *sport)
{
int loops = 10000;
@ -664,7 +663,7 @@ static void sbd_release_port(struct uart_port *uport)
static int sbd_map_port(struct uart_port *uport)
{
static const char *err = KERN_ERR "sbd: Cannot map MMIO\n";
const char *err = KERN_ERR "sbd: Cannot map MMIO\n";
struct sbd_port *sport = to_sport(uport);
struct sbd_duart *duart = sport->duart;
@ -691,8 +690,7 @@ static int sbd_map_port(struct uart_port *uport)
static int sbd_request_port(struct uart_port *uport)
{
static const char *err = KERN_ERR
"sbd: Unable to reserve MMIO resource\n";
const char *err = KERN_ERR "sbd: Unable to reserve MMIO resource\n";
struct sbd_duart *duart = to_sport(uport)->duart;
int map_guard;
int ret = 0;
@ -755,7 +753,7 @@ static int sbd_verify_port(struct uart_port *uport, struct serial_struct *ser)
}
static struct uart_ops sbd_ops = {
static const struct uart_ops sbd_ops = {
.tx_empty = sbd_tx_empty,
.set_mctrl = sbd_set_mctrl,
.get_mctrl = sbd_get_mctrl,