printk: Modify operators of printed_len and text_len

With commit <ddb9baa82226> ("printk: report lost messages in printk
safe/nmi contexts") and commit <8b1742c9c207> ("printk: remove zap_locks()
function"), it seems we can remove initialization, "=0", of text_len and
directly assign result of log_output to printed_len.

Link: http://lkml.kernel.org/r/1499755255-6258-1-git-send-email-vichy.kuo@gmail.com
Cc: rostedt@goodmis.org
Cc: linux-kernel@vger.kernel.org
Cc: joe@perches.com
Signed-off-by: Pierre Kuo <vichy.kuo@gmail.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index fc47863..229fbdc 100644 (file)
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1698,10 +1698,10 @@ asmlinkage int vprintk_emit(int facility, int level,
 {
        static char textbuf[LOG_LINE_MAX];
        char *text = textbuf;
-       size_t text_len = 0;
+       size_t text_len;
        enum log_flags lflags = 0;
        unsigned long flags;
-       int printed_len = 0;
+       int printed_len;
        bool in_sched = false;
 
        if (level == LOGLEVEL_SCHED) {
@@ -1754,7 +1754,7 @@ asmlinkage int vprintk_emit(int facility, int level,
        if (dict)
                lflags |= LOG_PREFIX|LOG_NEWLINE;
 
-       printed_len += log_output(facility, level, lflags, dict, dictlen, text, text_len);
+       printed_len = log_output(facility, level, lflags, dict, dictlen, text, text_len);
 
        logbuf_unlock_irqrestore(flags);