From: Anton Blanchard <anton@samba.org>
udbg_read would lock up if ppc_md.udbg_putc didnt exist. Just return 0 and
dont lock up instead.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/arch/ppc64/kernel/udbg.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletion(-)
diff -puN arch/ppc64/kernel/udbg.c~ppc64-another-udbg-fix arch/ppc64/kernel/udbg.c
--- 25/arch/ppc64/kernel/udbg.c~ppc64-another-udbg-fix 2004-06-26 22:40:15.393986560 -0700
+++ 25-akpm/arch/ppc64/kernel/udbg.c 2004-06-26 22:40:15.398985800 -0700
@@ -229,7 +229,8 @@ udbg_read(char *buf, int buflen) {
char c, *p = buf;
int i;
if (!ppc_md.udbg_putc)
- for (;;); /* stop here for cpuctl */
+ return 0;
+
for (i = 0; i < buflen; ++i) {
do {
c = ppc_md.udbg_getc();
_