Hi Florian,
On 12/17/2013 06:53 AM, Florian Vaussard wrote:
When booting with a devietree, no platform data is provided. Do not prematurely
exit iommu_enable() and iommu_disable() in such a case.
Platform data may still be needed if we were to go with the pdata quirks
approach for handling resets. You may need to revise the patch
description then, but the change itself may be ok if supporting only DT
devices.
regards
Suman
Signed-off-by: Florian Vaussard <florian.vaussard@xxxxxxx>
---
drivers/iommu/omap-iommu.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
index 51efcc4..0a9854d 100644
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -149,13 +149,10 @@ 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);
@@ -175,14 +172,11 @@ 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);
}
--
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