vprintk for zephyr

0001-printk-vprintk.patch

From 84330d4ad6b4b699819f5677fa6cb36a72b95088 Mon Sep 17 00:00:00 2001
From: Shotaro Uchida <fantom@xmaker.mx>
Date: Fri, 13 Jan 2017 14:55:08 +0900
Subject: [PATCH] printk: vprintk

---
 include/misc/printk.h | 1 +
 misc/printk.c         | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/include/misc/printk.h b/include/misc/printk.h
index fd48dcf..02cef54 100644
--- a/include/misc/printk.h
+++ b/include/misc/printk.h
@@ -55,6 +55,7 @@ extern __printf_like(1, 2) int printk(const char *fmt, ...);
 extern __printf_like(3, 4) int snprintk(char *str, size_t size,
 					const char *fmt, ...);
 extern int vsnprintk(char *str, size_t size, const char *fmt, va_list ap);
+extern int vprintk(const char *fmt, va_list ap);
 
 void _vprintk(int (*out)(int, void *), void *ctx, const char *fmt, va_list ap);
 #else
diff --git a/misc/printk.c b/misc/printk.c
index 5047fe2..02ead94 100644
--- a/misc/printk.c
+++ b/misc/printk.c
@@ -216,6 +216,13 @@ int printk(const char *fmt, ...)
 	return ctx.count;
 }
 
+int vprintk(const char *fmt, va_list ap)
+{
+	struct out_context ctx = { 0 };
+	_vprintk((out_func_t)char_out, &ctx, fmt, ap);
+	return ctx.count;
+}
+
 /**
  * @brief Output an unsigned long in hex format
  *
-- 
2.7.4