From: 黄涛 <huangtao@rock-chips.com>
Date: Sat, 30 Jul 2011 14:44:38 +0000 (+0800)
Subject: Revert "printk: Fix log_buf_copy termination."
X-Git-Tag: firefly_0821_release~9946
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c68ee91f0267ec9699c3b30ce87061bcc9e7047d;p=firefly-linux-kernel-4.4.55.git

Revert "printk: Fix log_buf_copy termination."

This reverts commit 8a3025c963926f1cc36b15f6b95b9da0c1ab1cdf.
---

diff --git a/kernel/printk.c b/kernel/printk.c
index 16fbcf7a2de3..e89b123a2ebb 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -285,8 +285,8 @@ int log_buf_copy(char *dest, int idx, int len)
 	if (idx < 0 || idx >= max) {
 		ret = -1;
 	} else {
-		if (len > max - idx)
-			len = max - idx;
+		if (len > max)
+			len = max;
 		ret = len;
 		idx += (log_end - max);
 		while (len-- > 0)