diff options
| author | James Morris <jmorris@namei.org> | 2009-03-28 06:57:13 +0300 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-03-28 06:57:13 +0300 |
| commit | bb798169d1bb860b07192cf9c75937fadc8610b4 (patch) | |
| tree | fa67f14406a1e79897e6f29e59fed7c02ec31c30 /drivers/s390/cio/airq.c | |
| parent | a106cbfd1f3703402fc2d95d97e7a054102250f0 (diff) | |
| parent | 5d80f8e5a9dc9c9a94d4aeaa567e219a808b8a4a (diff) | |
| download | linux-bb798169d1bb860b07192cf9c75937fadc8610b4.tar.xz | |
Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next
Diffstat (limited to 'drivers/s390/cio/airq.c')
| -rw-r--r-- | drivers/s390/cio/airq.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c index fe6cea15bbaf..65d2e769dfa1 100644 --- a/drivers/s390/cio/airq.c +++ b/drivers/s390/cio/airq.c @@ -34,8 +34,8 @@ struct airq_t { void *drv_data; }; -static union indicator_t indicators[MAX_ISC]; -static struct airq_t *airqs[MAX_ISC][NR_AIRQS]; +static union indicator_t indicators[MAX_ISC+1]; +static struct airq_t *airqs[MAX_ISC+1][NR_AIRQS]; static int register_airq(struct airq_t *airq, u8 isc) { @@ -133,6 +133,8 @@ void do_adapter_IO(u8 isc) while (word) { if (word & INDICATOR_MASK) { airq = airqs[isc][i]; + /* Make sure gcc reads from airqs only once. */ + barrier(); if (likely(airq)) airq->handler(&indicators[isc].byte[i], airq->drv_data); |