diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/hvc/hvc_dcc.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/tty/hvc/hvc_dcc.c b/drivers/tty/hvc/hvc_dcc.c index 6470f63deb4b..155ec105e1c8 100644 --- a/drivers/tty/hvc/hvc_dcc.c +++ b/drivers/tty/hvc/hvc_dcc.c @@ -33,8 +33,7 @@ static inline u32 __dcc_getstatus(void) { u32 __ret; - - asm("mrc p14, 0, %0, c0, c1, 0 @ read comms ctrl reg" + asm volatile("mrc p14, 0, %0, c0, c1, 0 @ read comms ctrl reg" : "=r" (__ret) : : "cc"); return __ret; @@ -46,7 +45,7 @@ static inline char __dcc_getchar(void) { char __c; - asm("get_wait: mrc p14, 0, pc, c0, c1, 0 \n\ + asm volatile("get_wait: mrc p14, 0, pc, c0, c1, 0 \n\ bne get_wait \n\ mrc p14, 0, %0, c0, c5, 0 @ read comms data reg" : "=r" (__c) : : "cc"); @@ -58,7 +57,7 @@ static inline char __dcc_getchar(void) { char __c; - asm("mrc p14, 0, %0, c0, c5, 0 @ read comms data reg" + asm volatile("mrc p14, 0, %0, c0, c5, 0 @ read comms data reg" : "=r" (__c)); return __c; @@ -68,7 +67,7 @@ static inline char __dcc_getchar(void) #if defined(CONFIG_CPU_V7) static inline void __dcc_putchar(char c) { - asm("put_wait: mrc p14, 0, pc, c0, c1, 0 \n\ + asm volatile("put_wait: mrc p14, 0, pc, c0, c1, 0 \n\ bcs put_wait \n\ mcr p14, 0, %0, c0, c5, 0 " : : "r" (c) : "cc"); @@ -76,7 +75,7 @@ static inline void __dcc_putchar(char c) #else static inline void __dcc_putchar(char c) { - asm("mcr p14, 0, %0, c0, c5, 0 @ write a char" + asm volatile("mcr p14, 0, %0, c0, c5, 0 @ write a char" : /* no output register */ : "r" (c)); } |