On 27.01.2014 22:49, Andrew Morton wrote:
On Mon, 27 Jan 2014 19:10:24 +0100 xypron.g...@gmx.de wrote:

From: Heinrich Schuchardt <xypron.g...@gmx.de>

If is based on uninitialized value keep_early.
This leads to unpredictable result.

...

--- a/arch/unicore32/kernel/early_printk.c
+++ b/arch/unicore32/kernel/early_printk.c
@@ -35,7 +35,7 @@ static struct console early_ocd_console = {

  static int __init setup_early_printk(char *buf)
  {
-       int keep_early;
+       int keep_early = 0;

        if (!buf || early_console)
                return 0;

yup.

But that code is quite overcooked.  How about this?

--- 
a/arch/unicore32/kernel/early_printk.c~arch-unicore32-kernel-early_printkc-setup_early_printk-missing-initialization-fix
+++ a/arch/unicore32/kernel/early_printk.c
@@ -35,17 +35,11 @@ static struct console early_ocd_console

  static int __init setup_early_printk(char *buf)
  {
-       int keep_early = 0;
-
        if (!buf || early_console)
                return 0;

-       if (strstr(buf, "keep"))
-               keep_early = 1;
-
        early_console = &early_ocd_console;
-
-       if (keep_early)
+       if (strstr(buf, "keep"))
                early_console->flags &= ~CON_BOOT;
        else
                early_console->flags |= CON_BOOT;
_



Your code is easier to read, and has same functionality.
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