powerpc/udbg: Remove unused udbg_read()

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>

2 files changed, 0 insertions, 24 deletions

diff --git a/arch/powerpc/include/asm/udbg.h b/arch/powerpc/include/asm/udbg.h
index b3038817b8d..5a7510e9d09 100644
--- a/arch/powerpc/include/asm/udbg.h
+++ b/arch/powerpc/include/asm/udbg.h
@@ -21,7 +21,6 @@ extern int (*udbg_getc_poll)(void);
 
 extern void udbg_puts(const char *s);
 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 udbg_printf(const char *fmt, ...)
diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c
index c39c1ca77f4..f9748498fe5 100644
--- a/arch/powerpc/kernel/udbg.c
+++ b/arch/powerpc/kernel/udbg.c
@@ -122,29 +122,6 @@ int udbg_write(const char *s, int n)
         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
 void udbg_printf(const char *fmt, ...)
 {