diff options
| author | Dave Olson <dave.olson@qlogic.com> | 2010-06-17 23:13:44 +0000 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2010-07-06 14:13:20 -0700 |
| commit | fce24a9d28f8b99fd0eacc14e252ab4fca9527a7 (patch) | |
| tree | 590717ce8bd0e8a63e072b4bd79b99be69c3b8c8 /drivers/infiniband/hw/qib/qib_tx.c | |
| parent | 67a3e12b05e055c0415c556a315a3d3eb637e29e (diff) | |
IB/qib: Don't mark VL15 bufs as WC to avoid a rare 7322 chip problem
Don't set write combining via PAT on the VL15 buffers to avoid a rare
problem with unaligned writes from interrupt-flushed store buffers.
Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_tx.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_tx.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/qib/qib_tx.c b/drivers/infiniband/hw/qib/qib_tx.c index f7eb1ddff5f..af30232b683 100644 --- a/drivers/infiniband/hw/qib/qib_tx.c +++ b/drivers/infiniband/hw/qib/qib_tx.c @@ -340,9 +340,13 @@ rescan: if (i < dd->piobcnt2k) buf = (u32 __iomem *)(dd->pio2kbase + i * dd->palign); - else + else if (i < dd->piobcnt2k + dd->piobcnt4k || !dd->piovl15base) buf = (u32 __iomem *)(dd->pio4kbase + (i - dd->piobcnt2k) * dd->align4k); + else + buf = (u32 __iomem *)(dd->piovl15base + + (i - (dd->piobcnt2k + dd->piobcnt4k)) * + dd->align4k); if (pbufnum) *pbufnum = i; dd->upd_pio_shadow = 0; |