diff options
| author | Bryan O'Sullivan <bos@pathscale.com> | 2006-07-01 04:36:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-01 09:56:01 -0700 |
| commit | 35783ec07c3f7f6902abe4433e7be1b664d0bbaf (patch) | |
| tree | f2bdf80a430862c46cc820b597fcb7cb88c7e777 /drivers/infiniband/hw/ipath/ipath_driver.c | |
| parent | 6d8e9dd050ea78862b6c5e2c873ad6407f9b2428 (diff) | |
| download | lwn-35783ec07c3f7f6902abe4433e7be1b664d0bbaf.tar.gz lwn-35783ec07c3f7f6902abe4433e7be1b664d0bbaf.zip | |
[PATCH] IB/ipath: fix a bug that results in addresses near 0 being written via DMA
We can't tell for sure if any packets are in the infinipath receive buffer
when we shut down a chip port. Normally this is taken care of by orderly
shutdown, but when processes are terminated, or sending process has a bug, we
can continue to receive packets. So rather than writing zero to the address
registers for the closing port, we point it at a dummy memory.
Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_driver.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_driver.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c index 4109913c20a7..f647918db62b 100644 --- a/drivers/infiniband/hw/ipath/ipath_driver.c +++ b/drivers/infiniband/hw/ipath/ipath_driver.c @@ -1824,6 +1824,12 @@ static void cleanup_device(struct ipath_devdata *dd) dd->ipath_pioavailregs_phys); dd->ipath_pioavailregs_dma = NULL; } + if (dd->ipath_dummy_hdrq) { + dma_free_coherent(&dd->pcidev->dev, + dd->ipath_pd[0]->port_rcvhdrq_size, + dd->ipath_dummy_hdrq, dd->ipath_dummy_hdrq_phys); + dd->ipath_dummy_hdrq = NULL; + } if (dd->ipath_pageshadow) { struct page **tmpp = dd->ipath_pageshadow; |