aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorNishanth Aravamudan <nacc@us.ibm.com>2011-08-25 15:59:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-08-25 16:25:34 -0700
commit4c30c6f566c0989ddaee3407da44751e340a63ed (patch)
tree0f8801e2449a37c1e4ac78588c474b3327a7c430
parent47331231bb997a8adb79774fc4cf4bb48fe4e00a (diff)
downloadlinux-linaro-precise-4c30c6f566c0989ddaee3407da44751e340a63ed.tar.gz
kernel/printk: do not turn off bootconsole in printk_late_init() if keep_bootcon
It seems that 7bf693951a8e ("console: allow to retain boot console via boot option keep_bootcon") doesn't always achieve what it aims, as when printk_late_init() runs it unconditionally turns off all boot consoles. With this patch, I am able to see more messages on the boot console in KVM guests than I can without, when keep_bootcon is specified. I think it is appropriate for the relevant -stable trees. However, it's more of an annoyance than a serious bug (ideally you don't need to keep the boot console around as console handover should be working -- I was encountering a situation where the console handover wasn't working and not having the boot console available meant I couldn't see why). Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Cc: David S. Miller <davem@davemloft.net> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Greg KH <gregkh@suse.de> Acked-by: Fabio M. Di Nitto <fdinitto@redhat.com> Cc: <stable@kernel.org> [2.6.39.x, 3.0.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--kernel/printk.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/printk.c b/kernel/printk.c
index 836a2ae0ac3..28a40d8171b 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -1604,7 +1604,7 @@ static int __init printk_late_init(void)
struct console *con;
for_each_console(con) {
- if (con->flags & CON_BOOT) {
+ if (!keep_bootcon && con->flags & CON_BOOT) {
printk(KERN_INFO "turn off boot console %s%d\n",
con->name, con->index);
unregister_console(con);