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powerpc/udbg: Remove unused udbg_read()

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The last user of udbg_read() was removed in 2005, in commit fca5dcd
"Simplify and clean up the xmon terminal I/O".

Given we haven't needed it for 7 years we can probably drop it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman 2012-10-09 04:20:28 +00:00 committed by Benjamin Herrenschmidt
parent f7fb862b84
commit 6432200aa8
2 changed files with 0 additions and 24 deletions
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1
arch/powerpc/include/asm/udbg.h
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@ -21,7 +21,6 @@ extern int (*udbg_getc_poll)(void);
extern void udbg_puts(const char *s); extern void udbg_puts(const char *s);
extern int udbg_write(const char *s, int n); extern int udbg_write(const char *s, int n);
extern int udbg_read(char *buf, int buflen);
extern void register_early_udbg_console(void); extern void register_early_udbg_console(void);
extern void udbg_printf(const char *fmt, ...) extern void udbg_printf(const char *fmt, ...)

23
arch/powerpc/kernel/udbg.c
View File

@ -122,29 +122,6 @@ int udbg_write(const char *s, int n)
return n - remain; return n - remain;
} }
int udbg_read(char *buf, int buflen)
{
char *p = buf;
int i, c;
if (!udbg_getc)
return 0;
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 || c == -1)
break;
*p++ = c;
}
return i;
}
#define UDBG_BUFSIZE 256 #define UDBG_BUFSIZE 256
void udbg_printf(const char *fmt, ...) void udbg_printf(const char *fmt, ...)
{ {