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printk: fix regression in SYSLOG_ACTION_CLEAR 

Commit 7ff9554bb5 (printk: convert
byte-buffer to variable-length record buffer) introduced a regression
by accidentally removing a "break" statement from inside the big
switch in printk's do_syslog().  The symptom of this bug is that the
"dmesg -C" command doesn't only clear the kernel's log buffer; it also
disables console logging.

This patch (as1561) fixes the regression by adding the missing
"break".

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Kay Sievers <kay@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern 2012-06-22 17:12:19 -04:00 committed by Greg Kroah-Hartman
parent eb3979f64d
commit 4661e3568a
1 changed files with 1 additions and 0 deletions
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kernel/printk.c
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@ -1040,6 +1040,7 @@ int do_syslog(int type, char __user *buf, int len, bool from_file)
/* Clear ring buffer */
case SYSLOG_ACTION_CLEAR:
syslog_print_all(NULL, 0, true);
break;
/* Disable logging to console */
case SYSLOG_ACTION_CONSOLE_OFF:
if (saved_console_loglevel == -1)