s390/time: rename store_tod_clock_ext() and use union tod_clock

Rename store_tod_clock_ext() to store_tod_clock_ext_cc() to reflect
that it returns a condition code and also use union tod_clock as
parameter.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

arch/s390/include/asm/timex.h

@@ -53,16 +53,15 @@ static inline int set_tod_clock(__u64 time)
 	return cc;
 }
 
-static inline int store_tod_clock_ext(char *time)
+static inline int store_tod_clock_ext_cc(union tod_clock *clk)
 {
-	typedef struct { char _[STORE_CLOCK_EXT_SIZE]; } addrtype;
 	int cc;
 
 	asm volatile(
 		"   stcke  %1\n"
 		"   ipm   %0\n"
 		"   srl   %0,28\n"
-		: "=d" (cc), "=Q" (*(addrtype *)time) : : "cc");
+		: "=d" (cc), "=Q" (*clk) : : "cc");
 	return cc;
 }
 

arch/s390/kernel/early.c

@@ -35,12 +35,12 @@
 
 static void __init reset_tod_clock(void)
 {
-	char time[STORE_CLOCK_EXT_SIZE];
+	union tod_clock clk;
 
-	if (store_tod_clock_ext(time) == 0)
+	if (store_tod_clock_ext_cc(&clk) == 0)
 		return;
 	/* TOD clock not running. Set the clock to Unix Epoch. */
-	if (set_tod_clock(TOD_UNIX_EPOCH) != 0 || store_tod_clock_ext(time) != 0)
+	if (set_tod_clock(TOD_UNIX_EPOCH) || store_tod_clock_ext_cc(&clk))
 		disabled_wait();
 
 	memset(tod_clock_base, 0, 16);