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| author | Anton Vorontsov <cbouatmailru@gmail.com> | 2012-01-10 20:55:11 +0400 |
|---|---|---|
| committer | Anton Vorontsov <cbouatmailru@gmail.com> | 2012-01-10 20:55:11 +0400 |
| commit | 913272b3864d6da89c70d9fc2c30ccb57794b369 (patch) | |
| tree | 4fb0a8ab1b53623d2a8ea200b80a3ace2d271471 /drivers/tty/hvc/hvc_dcc.c | |
| parent | 6cfc2a23540667cff6da6e41d1f1167a9a45aa9a (diff) | |
| parent | 629bcb4b72d49b3631ae3dd0fe1d345820fadfcc (diff) | |
| download | lwn-913272b3864d6da89c70d9fc2c30ccb57794b369.tar.gz lwn-913272b3864d6da89c70d9fc2c30ccb57794b369.zip | |
Merge git://git.infradead.org/users/cbou/battery-urgent
Diffstat (limited to 'drivers/tty/hvc/hvc_dcc.c')
| -rw-r--r-- | drivers/tty/hvc/hvc_dcc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/tty/hvc/hvc_dcc.c b/drivers/tty/hvc/hvc_dcc.c index 435f6facbc23..44fbebab5075 100644 --- a/drivers/tty/hvc/hvc_dcc.c +++ b/drivers/tty/hvc/hvc_dcc.c @@ -46,6 +46,7 @@ static inline char __dcc_getchar(void) asm volatile("mrc p14, 0, %0, c0, c5, 0 @ read comms data reg" : "=r" (__c)); + isb(); return __c; } @@ -55,6 +56,7 @@ static inline void __dcc_putchar(char c) asm volatile("mcr p14, 0, %0, c0, c5, 0 @ write a char" : /* no output register */ : "r" (c)); + isb(); } static int hvc_dcc_put_chars(uint32_t vt, const char *buf, int count) |