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Commit 7ab64a85 authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

s390/time: fix get_tod_clock_ext inline assembly 



The get_tod_clock_ext inline assembly does not specify its output
operands correctly. This can cause incorrect code to be generated.

Cc: stable@vger.kernel.org # 3.12
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent ac526f42

arch/s390/include/asm/timex.h

+4 −2
Original line number Diff line number Diff line
@@ -71,9 +71,11 @@ static inline void local_tick_enable(unsigned long long comp) 


typedef unsigned long long cycles_t;



static inline void get_tod_clock_ext(char *clk)

static inline void get_tod_clock_ext(char clk[16])

{

	asm volatile("stcke %0" : "=Q" (*clk) : : "cc");

	typedef struct { char _[sizeof(clk)]; } addrtype;



	asm volatile("stcke %0" : "=Q" (*(addrtype *) clk) : : "cc");

}



static inline unsigned long long get_tod_clock(void)