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Subject[tip:x86/urgent] x86, setup: Fix earlyprintk=serial,ttyS0,115200
Commit-ID:  83d9f65bdae6f6b34d75282c6618d3f50846849a
Gitweb: http://git.kernel.org/tip/83d9f65bdae6f6b34d75282c6618d3f50846849a
Author: Yinghai Lu <yinghai@kernel.org>
AuthorDate: Sun, 29 Aug 2010 18:12:24 -0700
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Tue, 21 Sep 2010 10:18:14 -0700

x86, setup: Fix earlyprintk=serial,ttyS0,115200

Torsten reported that there is garbage output,
after commit 8fee13a48e4879fba57725f6d9513df4bfa8e9f3 (x86,
setup: enable early console output from the decompressor)

It turns out we missed the offset for that case.

Reported-by: Torsten Kaiser <just.for.lkml@googlemail.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4C7B0578.8090807@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/boot/early_serial_console.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/boot/early_serial_console.c b/arch/x86/boot/early_serial_console.c
index 030f4b9..407a8e2 100644
--- a/arch/x86/boot/early_serial_console.c
+++ b/arch/x86/boot/early_serial_console.c
@@ -58,7 +58,7 @@ static void parse_earlyprintk(void)
if (arg[pos] == ',')
pos++;

- if (!strncmp(arg, "ttyS", 4)) {
+ if (!strncmp(arg + pos, "ttyS", 4)) {
static const int bases[] = { 0x3f8, 0x2f8 };
int idx = 0;


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