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| author | Florian Vaussard <florian.vaussard@epfl.ch> | 2014-02-28 14:42:34 -0600 |
|---|---|---|
| committer | Joerg Roedel <joro@8bytes.org> | 2014-03-04 17:01:44 +0100 |
| commit | 90e569c4ca727b59ba8f82a9cd5e2f43462bbc3b (patch) | |
| tree | 3979ca093ad5a4e95a6a7e57443565ddb669590d /drivers/iommu | |
| parent | 7ee08b9ef2e942a5477f02a71947b933eb4101d2 (diff) | |
| download | linux-90e569c4ca727b59ba8f82a9cd5e2f43462bbc3b.tar.gz linux-90e569c4ca727b59ba8f82a9cd5e2f43462bbc3b.tar.bz2 linux-90e569c4ca727b59ba8f82a9cd5e2f43462bbc3b.zip | |
iommu/omap: Allow enable/disable even without pdata
When booting with a devicetree, no platform data is provided.
Do not prematurely exit iommu_enable() and iommu_disable() in
such a case.
Note: As OMAP do not yet has a proper reset controller driver,
IOMMUs requiring a reset signal should use pdata-quirks as a
transitional solution.
Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch>
Signed-off-by: Suman Anna <s-anna@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/omap-iommu.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index 647e4ba0df95..217952b993e1 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -146,13 +146,10 @@ static int iommu_enable(struct omap_iommu *obj) struct platform_device *pdev = to_platform_device(obj->dev); struct iommu_platform_data *pdata = pdev->dev.platform_data; - if (!pdata) - return -EINVAL; - if (!arch_iommu) return -ENODEV; - if (pdata->deassert_reset) { + if (pdata && pdata->deassert_reset) { err = pdata->deassert_reset(pdev, pdata->reset_name); if (err) { dev_err(obj->dev, "deassert_reset failed: %d\n", err); @@ -172,14 +169,11 @@ static void iommu_disable(struct omap_iommu *obj) struct platform_device *pdev = to_platform_device(obj->dev); struct iommu_platform_data *pdata = pdev->dev.platform_data; - if (!pdata) - return; - arch_iommu->disable(obj); pm_runtime_put_sync(obj->dev); - if (pdata->assert_reset) + if (pdata && pdata->assert_reset) pdata->assert_reset(pdev, pdata->reset_name); } |