[PATCH v2] printk: Modify operators of printed_len and text_len

[Pierre Kuo]

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.

Signed-off-by: Pierre Kuo <vichy....@gmail.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhat...@gmail.com>
---
Changes since v2:
 * Per Petr's friendly reminder, add description of <ddb9baa82226> ("printk: 
report lost messages in printk
safe/nmi contexts") and remove "=0", the initialization, of text_len.

 kernel/printk/printk.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index fc47863..229fbdcb 100644
--- 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);
 
-- 
1.7.9.5