diff options
| author | Bryan O'Sullivan <bos@pathscale.com> | 2006-04-24 14:22:58 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-05-01 12:14:12 -0700 |
| commit | 68dd43a162b43218d2e5ac1d139c1d53da965f54 (patch) | |
| tree | 5c21df89d9b154b287cc340a5ac4be97d1a61e3f /drivers | |
| parent | 755e4ca4a9885b79a14169ab5b615920eb38a32a (diff) | |
| download | blackbird-op-linux-68dd43a162b43218d2e5ac1d139c1d53da965f54.tar.gz blackbird-op-linux-68dd43a162b43218d2e5ac1d139c1d53da965f54.zip | |
IB/ipath: set up 32-bit DMA mask if 64-bit setup fails
Some systems do not set up 64-bit maps on systems with 2GB or less of
memory installed, so we have to fall back to trying a 32-bit setup.
Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_driver.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c index e7617c3982ea..7ff95b72d1fc 100644 --- a/drivers/infiniband/hw/ipath/ipath_driver.c +++ b/drivers/infiniband/hw/ipath/ipath_driver.c @@ -418,9 +418,19 @@ static int __devinit ipath_init_one(struct pci_dev *pdev, ret = pci_set_dma_mask(pdev, DMA_64BIT_MASK); if (ret) { - dev_info(&pdev->dev, "pci_set_dma_mask unit %u " - "fails: %d\n", dd->ipath_unit, ret); - goto bail_regions; + /* + * if the 64 bit setup fails, try 32 bit. Some systems + * do not setup 64 bit maps on systems with 2GB or less + * memory installed. + */ + ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK); + if (ret) { + dev_info(&pdev->dev, "pci_set_dma_mask unit %u " + "fails: %d\n", dd->ipath_unit, ret); + goto bail_regions; + } + else + ipath_dbg("No 64bit DMA mask, used 32 bit mask\n"); } pci_set_master(pdev); |
