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[PATCH] powerpc: udbg updates

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The udbg low level io layer has an issue with udbg_getc() returning a
char (unsigned on ppc) instead of an int, thus the -1 if you had no
available input device could end up turned into 0xff, filling your
display with bogus characters. This fixes it, along with adding a little
blob to xmon to do a delay before exiting when getting an EOF and fixing
the detection of ADB keyboards in udbg_adb.c

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt
2005-11-30 16:54:12 +11:00
committed by Paul Mackerras
parent 54b9a9aedc
commit bb6b9b28d6
9 changed files with 24 additions and 19 deletions
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11
arch/powerpc/kernel/udbg.c
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@ -17,7 +17,7 @@
#include <asm/processor.h>
void (*udbg_putc)(char c);
char (*udbg_getc)(void);
int (*udbg_getc)(void);
int (*udbg_getc_poll)(void);
/* udbg library, used by xmon et al */
@ -57,8 +57,8 @@ int udbg_write(const char *s, int n)
int udbg_read(char *buf, int buflen)
{
char c, *p = buf;
int i;
char *p = buf;
int i, c;
if (!udbg_getc)
return 0;
@ -66,8 +66,11 @@ int udbg_read(char *buf, int buflen)
for (i = 0; i < buflen; ++i) {
do {
c = udbg_getc();
if (c == -1 && i == 0)
return -1;
} while (c == 0x11 || c == 0x13);
if (c == 0)
if (c == 0 || c == -1)
break;
*p++ = c;
}