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scsi: gdth: remove direct serial port access 

Remove never compile in support for sending debug traces straight to
the serial port using direct port access.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Christoph Hellwig 2018-12-12 08:41:22 +01:00 committed by Martin K. Petersen
parent 314814552a
commit adfa080bf2
1 changed files with 0 additions and 70 deletions
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70
drivers/scsi/gdth.c
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@ -185,79 +185,9 @@ static void gdth_scsi_done(struct scsi_cmnd *scp);
#ifdef DEBUG_GDTH
static u8 DebugState = DEBUG_GDTH;
#ifdef __SERIAL__
#define MAX_SERBUF 160
static void ser_init(void);
static void ser_puts(char *str);
static void ser_putc(char c);
static int ser_printk(const char *fmt, ...);
static char strbuf[MAX_SERBUF+1];
#ifdef __COM2__
#define COM_BASE 0x2f8
#else
#define COM_BASE 0x3f8
#endif
static void ser_init()
{
unsigned port=COM_BASE;
outb(0x80,port+3);
outb(0,port+1);
/* 19200 Baud, if 9600: outb(12,port) */
outb(6, port);
outb(3,port+3);
outb(0,port+1);
/*
ser_putc('I');
ser_putc(' ');
*/
}
static void ser_puts(char *str)
{
char *ptr;
ser_init();
for (ptr=str;*ptr;++ptr)
ser_putc(*ptr);
}
static void ser_putc(char c)
{
unsigned port=COM_BASE;
while ((inb(port+5) & 0x20)==0);
outb(c,port);
if (c==0x0a)
{
while ((inb(port+5) & 0x20)==0);
outb(0x0d,port);
}
}
static int ser_printk(const char *fmt, ...)
{
va_list args;
int i;
va_start(args,fmt);
i = vsprintf(strbuf,fmt,args);
ser_puts(strbuf);
va_end(args);
return i;
}
#define TRACE(a) {if (DebugState==1) {ser_printk a;}}
#define TRACE2(a) {if (DebugState==1 || DebugState==2) {ser_printk a;}}
#define TRACE3(a) {if (DebugState!=0) {ser_printk a;}}
#else /* !__SERIAL__ */
#define TRACE(a) {if (DebugState==1) {printk a;}}
#define TRACE2(a) {if (DebugState==1 || DebugState==2) {printk a;}}
#define TRACE3(a) {if (DebugState!=0) {printk a;}}
#endif
#else /* !DEBUG */
#define TRACE(a)
#define TRACE2(a)