diff options
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_file_ops.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_file_ops.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c index 5de3243a47c..92dae6f5b39 100644 --- a/drivers/infiniband/hw/ipath/ipath_file_ops.c +++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c @@ -2149,11 +2149,15 @@ static int ipath_get_slave_info(struct ipath_portdata *pd, static int ipath_force_pio_avail_update(struct ipath_devdata *dd) { - u64 reg = dd->ipath_sendctrl; + unsigned long flags; - clear_bit(IPATH_S_PIOBUFAVAILUPD, ®); - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, reg); + spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); + ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, + dd->ipath_sendctrl & ~INFINIPATH_S_PIOBUFAVAILUPD); + ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, dd->ipath_sendctrl); + ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); + spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); return 0; } |