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.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/