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console: Use for_each_console() helper in unregister_console() 

We have rather open coded single linked list manipulations where we may
simple use for_each_console() helper with properly set exit conditions.

Replace open coded single-linked list handling with for_each_console()
helper in use.

Link: http://lkml.kernel.org/r/20200203133130.11591-3-andriy.shevchenko@linux.intel.com
To: linux-kernel@vger.kernel.org
To: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
This commit is contained in:
Andy Shevchenko 2020-02-03 15:31:26 +02:00 committed by Petr Mladek
parent caa72c3bc5
commit 12825e6ba8
1 changed files with 5 additions and 6 deletions
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11
kernel/printk/printk.c
View File

@ -2809,7 +2809,7 @@ EXPORT_SYMBOL(register_console);
int unregister_console(struct console *console)
{
struct console *a, *b;
struct console *con;
int res;
pr_info("%sconsole [%s%d] disabled\n",
@ -2825,11 +2825,10 @@ int unregister_console(struct console *console)
if (console_drivers == console) {
console_drivers=console->next;
res = 0;
} else if (console_drivers) {
for (a=console_drivers->next, b=console_drivers ;
a; b=a, a=b->next) {
if (a == console) {
b->next = a->next;
} else {
for_each_console(con) {
if (con->next == console) {
con->next = console->next;
res = 0;
break;
}