diff options
| author | Tomas Winkler <tomas.winkler@intel.com> | 2013-12-17 15:56:57 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-18 16:39:54 -0800 |
| commit | 3ecfb168a51ddf0226abe245065516bc2ebfdef5 (patch) | |
| tree | 2bd2229b70fedddf1f36ac4835b6afd3e96f4a05 /drivers/misc | |
| parent | 479327fc42737234a1f76f20010334c99110d256 (diff) | |
| download | op-kernel-dev-3ecfb168a51ddf0226abe245065516bc2ebfdef5.zip op-kernel-dev-3ecfb168a51ddf0226abe245065516bc2ebfdef5.tar.gz | |
mei: me: set dma mask using DMA mapping API
ME device is 64bit DMA capable
We assume both coherent and consistent memory to match
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/mei/pci-me.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index 7dfaa32..8b1deea 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -144,6 +144,21 @@ static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) dev_err(&pdev->dev, "failed to get pci regions.\n"); goto disable_device; } + + if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) || + dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { + + err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (err) + err = dma_set_coherent_mask(&pdev->dev, + DMA_BIT_MASK(32)); + } + if (err) { + dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); + goto release_regions; + } + + /* allocates and initializes the mei dev structure */ dev = mei_me_dev_init(pdev); if (!dev) { |
