diff options
Diffstat (limited to 'os/kernel')
| -rw-r--r-- | os/kernel/src/chmboxes.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/os/kernel/src/chmboxes.c b/os/kernel/src/chmboxes.c index 86f88dce7..163f93f20 100644 --- a/os/kernel/src/chmboxes.c +++ b/os/kernel/src/chmboxes.c @@ -364,6 +364,7 @@ msg_t chMBFetchI(Mailbox *mbp, msg_t *msgp) { if (chSemGetCounterI(&mbp->mb_fullsem) <= 0)
return RDY_TIMEOUT;
+ chSemFastWaitI(&mbp->mb_fullsem);
*msgp = *mbp->mb_rdptr++;
if (mbp->mb_rdptr >= mbp->mb_top)
mbp->mb_rdptr = mbp->mb_buffer;
|