Commit 86d0004a authored by Maciej W. Rozycki's avatar Maciej W. Rozycki Committed by Linus Torvalds
Browse files

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: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent dd22a682
......@@ -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,
......
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