tree 40b3a1fc2ba5871dab98e0200eae76c09a72156a
parent 6b97a20d3a7909daa06625d4440c2c52d7bf08d7
author Sergey Senozhatsky <sergey.senozhatsky@gmail.com> 1458249687 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1458252574 -0700

printk: check CON_ENABLED in have_callable_console()

have_callable_console() must also test CON_ENABLED bit, not just
CON_ANYTIME.  We may have disabled CON_ANYTIME console so printk can
wrongly assume that it's safe to call_console_drivers().

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: Jan Kara <jack@suse.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Kyle McMartin <kyle@kernel.org>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Calvin Owens <calvinowens@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>