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| author | Pavel Pisa <pisa@cmp.felk.cvut.cz> | 2016-10-12 09:40:41 +0200 |
|---|---|---|
| committer | Pavel Pisa <pisa@cmp.felk.cvut.cz> | 2016-10-17 09:41:58 +0200 |
| commit | 6b54dcbbef6a003ae4c5fb9ae77f2f261f82dbf9 (patch) | |
| tree | 944e6955408a0b4cfe093beabab1fb67a2d91efe /c/src/lib/libbsp/i386/pc386/console/inch.c | |
| parent | bsp/atsamv: Fix typo (diff) | |
| download | rtems-6b54dcbbef6a003ae4c5fb9ae77f2f261f82dbf9.tar.bz2 | |
bsps/i386: replace global interrupt disable by SMP build supporting locking.
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/i386/pc386/console/inch.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/c/src/lib/libbsp/i386/pc386/console/inch.c b/c/src/lib/libbsp/i386/pc386/console/inch.c index 047269e4f0..f5d5079236 100644 --- a/c/src/lib/libbsp/i386/pc386/console/inch.c +++ b/c/src/lib/libbsp/i386/pc386/console/inch.c @@ -260,13 +260,17 @@ int BSP_wait_polled_input(void) int rtems_kbpoll( void ) { int rc; - rtems_interrupt_level level; - rtems_interrupt_disable(level); + /* + * The locking or disable of interrupts does not help + * there because if interrupts are enabled after leave of this + * function the state can change without notice anyway. + */ + RTEMS_COMPILER_MEMORY_BARRIER(); rc = ( kbd_first != kbd_last ) ? TRUE : FALSE; - rtems_interrupt_enable(level); + RTEMS_COMPILER_MEMORY_BARRIER(); return rc; } |