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iommu/omap: Remove iopgtable_clear_entry_all() from driver remove 

The function iopgtable_clear_entry_all() is used for clearing all
the page table entries. These entries are neither created nor
initialized during the OMAP IOMMU driver probe, and are managed
only when a client device attaches to the IOMMU. So, there is no
need to invoke this function on a driver remove.

Removing this fixes a NULL pointer dereference crash if the IOMMU
device is unbound from the driver with no client device attached
to the IOMMU device.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Suman Anna 2016-04-04 17:46:18 -05:00 committed by Joerg Roedel
parent 9735a22799
commit 521f40823e
1 changed files with 0 additions and 1 deletions
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drivers/iommu/omap-iommu.c
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@ -987,7 +987,6 @@ static int omap_iommu_remove(struct platform_device *pdev)
{
struct omap_iommu *obj = platform_get_drvdata(pdev);
iopgtable_clear_entry_all(obj);
omap_iommu_debugfs_remove(obj);
pm_runtime_disable(obj->dev);