init/Kconfig: Hide printk log config if CONFIG_PRINTK=n

commit 361e9dfbaae84b0b246ed18d1ab7c82a1a41b53e upstream.

The buffers sized by CONFIG_LOG_BUF_SHIFT and
CONFIG_LOG_CPU_MAX_BUF_SHIFT do not exist if CONFIG_PRINTK=n, so don't
ask about their size at all.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
[lizf: Backported to 3.4:
 - drop the change to CONFIG_LOG_CPU_MAX_BUF_SHIFT as it doesn't exist in 3.4]
Signed-off-by: Zefan Li <lizefan@huawei.com>

diff --git a/init/Kconfig b/init/Kconfig
index 6cfd71d..f1b0e78 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -560,6 +560,7 @@ config LOG_BUF_SHIFT
        int "Kernel log buffer size (16 => 64KB, 17 => 128KB)"
        range 12 21
        default 17
+       depends on PRINTK
        help
          Select kernel log buffer size as a power of 2.
          Examples: