diff options
| author | wuyangyong <[email protected]> | 2011-07-17 04:16:21 +0000 |
|---|---|---|
| committer | wuyangyong <[email protected]> | 2011-07-17 04:16:21 +0000 |
| commit | 5b063d3030d718e1628eed2d47811b0330467159 (patch) | |
| tree | 76ab3b8ec6bfb28acc4fa76b94db8fd61a929e18 | |
| parent | c9a5379a0c60814f071cf2a1cda59533d18f8668 (diff) | |
fix interrupt repeat bug.
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1633 bbd45198-f89e-11dd-88c7-29a3b14d5316
| -rw-r--r-- | libcpu/arm/s3c24x0/trap.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/libcpu/arm/s3c24x0/trap.c b/libcpu/arm/s3c24x0/trap.c index c90222e47a..09f1c88bca 100644 --- a/libcpu/arm/s3c24x0/trap.c +++ b/libcpu/arm/s3c24x0/trap.c @@ -151,14 +151,15 @@ void rt_hw_trap_irq() if (intstat == INTGLOBAL) return; - /* clear pending register */ - ClearPending(1 << intstat); - /* get interrupt service routine */ isr_func = isr_table[intstat]; /* turn to interrupt service routine */ isr_func(intstat); + + /* clear pending register */
+ /* note: must be the last, if not, may repeat*/ + ClearPending(1 << intstat); } void rt_hw_trap_fiq() |